2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1219
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
1. Verify that DTC P0A80, P0A81 or P0BBD is not set.
瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle),
2. Ignition ON, observe the scan tool BECM hybrid battery temperature parameters. The readings should be between -39 and +95掳C (-38.2 and
+203掳F) with no greater than a 15掳C ( 59掳F) difference between any of the four temperature sensor readings. Refer to Temperature Versus
Resistance ().
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Verify that none of the following conditions exist:
* the inlet and outlet air vents do not have any obstructions or blockages
* the vent fan blades are not broken or damaged
* the internal foam seals are not missing or damaged
瀚慖f any conditions are found, remove, repair or replace as necessary.
3. Ignition OFF, disconnect the X3 harness connector at the drive motor generator battery control module.
4. Test for 1k ohm-209k ohm between each of the terminals listed below. The resistance of each temperature sensor should be within the
specified range, and within 500 ohm of each other. Refer to Temperature Versus Resistance ().
* Sensor 1-5 V reference circuit terminal 1 and low reference circuit terminal 2
* Sensor 2-5 V Reference circuit terminal 3 and low reference circuit terminal 4
* Sensor 3-5 V Reference circuit terminal 5 and low reference circuit terminal 6
* Sensor 4-5 V Reference circuit terminal 7 and low reference circuit terminal 8
瀚慖f not within the specified range, replace the drive motor battery sensor module wiring harness.
Showing posts with label DTC Type Reference. Show all posts
Showing posts with label DTC Type Reference. Show all posts
Wednesday, November 6, 2019
Tuesday, November 5, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1175
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1175
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Operate the vehicle under the Conditions for Running the DTC.
4. Retest for DTCs P0AEE, P0AEF, P0AF0, P0AF3, P0AF4, P0AF5, P0BD2, P0BD3, P0BD4, P0BD7, P0BD8, P0BD9, P0BDC, P0BDD,
P0BDE, P0BE1, P0BE2 AND P0BE3.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P0AF3
DTC P0AEE, P0AEF, P0AF0, P0AF3-P0AF5, P0BD2-P0BD4, P0BD7-P0BD9, P0BDC-P0BDE, or P0BE1-P0BE3
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0AEE
- Drive Motor Inverter Temperature Sensor 1 Performance
DTC P0AEF
- Drive Motor Inverter Temperature Sensor 1 Circuit Low Voltage
DTC P0AF0
- Drive Motor Inverter Temperature Sensor 1 Circuit High Voltage
DTC P0AF3
- Drive Motor Inverter Temperature Sensor 2 Performance
DTC P0AF4
- Drive Motor Inverter Temperature Sensor 2 Circuit Low Voltage
DTC P0AF5
- Drive Motor Inverter Temperature Sensor 2 Circuit High Voltage
DTC P0BD2
- Drive Motor Inverter Temperature Sensor 3 Performance
DTC P0BD3
- Drive Motor Inverter Temperature Sensor 3 Circuit Low Voltage
DTC P0BD4
- Drive Motor Inverter Temperature Sensor 3 Circuit High Voltage
DTC P0BD7
- Drive Motor Inverter Temperature Sensor 4 Performance
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Operate the vehicle under the Conditions for Running the DTC.
4. Retest for DTCs P0AEE, P0AEF, P0AF0, P0AF3, P0AF4, P0AF5, P0BD2, P0BD3, P0BD4, P0BD7, P0BD8, P0BD9, P0BDC, P0BDD,
P0BDE, P0BE1, P0BE2 AND P0BE3.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P0AF3
DTC P0AEE, P0AEF, P0AF0, P0AF3-P0AF5, P0BD2-P0BD4, P0BD7-P0BD9, P0BDC-P0BDE, or P0BE1-P0BE3
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0AEE
- Drive Motor Inverter Temperature Sensor 1 Performance
DTC P0AEF
- Drive Motor Inverter Temperature Sensor 1 Circuit Low Voltage
DTC P0AF0
- Drive Motor Inverter Temperature Sensor 1 Circuit High Voltage
DTC P0AF3
- Drive Motor Inverter Temperature Sensor 2 Performance
DTC P0AF4
- Drive Motor Inverter Temperature Sensor 2 Circuit Low Voltage
DTC P0AF5
- Drive Motor Inverter Temperature Sensor 2 Circuit High Voltage
DTC P0BD2
- Drive Motor Inverter Temperature Sensor 3 Performance
DTC P0BD3
- Drive Motor Inverter Temperature Sensor 3 Circuit Low Voltage
DTC P0BD4
- Drive Motor Inverter Temperature Sensor 3 Circuit High Voltage
DTC P0BD7
- Drive Motor Inverter Temperature Sensor 4 Performance
Sunday, November 3, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2018
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2018
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2015
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2015
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2009
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2009
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2006
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2006
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2003
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2003
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1971
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1971
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1968
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1968
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1965
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1965
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1962
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1962
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* DT-47825-10 Jumper Harness
* DT-48493 Jumper Harness
Circuit/System Verification
Test for correct operation of the Direction IMS in every range selection. Refer to Typical Scan Tool Data.
If the IMS operation matches the logic table, the system is functioning normally.
Circuit/System Testing
1. Disconnect the transmission X176 24-way connector. Ignition ON. The scan tool Direction IMS parameter should display HIGH for the R1,
R2, D1, D2 and S signal circuit displays.
锟斤拷If a signal displays LOW, disconnect the PIM connector X1 and test the circuit for a short to ground.
锟斤拷If the circuit tests normal, replace the PIM.
2. Install DT-48493 to the vehicle harness connector X176. Verify that a test lamp illuminates between the direction IMS switch ground circuit
and battery positive.
锟斤拷If the test lamp does not illuminate, disconnect PIM connector X1 and test the ground circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
3. Connect a 3-amp fused jumper wire between each Direction IMS signal circuit at DT-48493 and the ground circuit terminal. The scan tool
parameter should display LOW for each signal circuit when grounded.
锟斤拷If a scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
4. Disconnect the transmission 16-way X1 connector. Install DT-47825-10 to the vehicle harness. Connect a 3-amp fused jumper wire between
the Starter signal circuit terminal and ground. The scan tool parameter should display LOW when the signal circuit is grounded.
锟斤拷If the scan tool parameter always displays HIGH, disconnect PIM connector X1 and test the circuit for an open, high resistance or short to
voltage condition.
锟斤拷If the circuit tests normal, replace the PIM.
Important: The remaining diagnostic steps test the internal transmission components and circuits. The automatic transmission fluid
pan assembly must be removed in order to perform the diagnostic tests.
5. Disconnect the IMS connector at the switch.
Important: Connect one end of the DT-48493 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the direction signal circuits and the ground circuit between the IMS and the transmission 24-way X176 connector for a short to
ground, open, high resistance or short to voltage condition.
Important: Connect one end of the DT-47825-10 to the transmission connector. Use the other end as the terminal testing point.
锟斤拷Test the Starter signal circuit between the IMS and the transmission 16-way X1 connector for a short to ground, open, high resistance or
short to voltage condition. The TCM is a pass-through of the Starter signal circuit and should be tested as a typical circuit path.
锟斤拷If the circuit, including the TCM, tests normal, replace the IMS switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and
Saturday, November 2, 2019
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2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1922
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
* Observe the DTC information with a scan tool. Verify there are no B52 HO2S heater or fuel trim DTCs set.
锟斤拷If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle).
* Engine idling at operating temperature, observe the appropriate B52 HO2S parameter with a scan tool. Verify the following:
- The B52 HO2S 1 value should vary from below 200 mV to above 800 mV and respond to fueling changes.
- The B52 HO2S 2 value should change greater than 200 mV when the throttle is quickly cycled 3 times from closed to wide open and
back to closed after running the engine at 1,500 RPM for 30 s.
* Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Verify none of the following conditions exist:
* Lean or rich fuel injectors-Refer to Fuel Injector Diagnosis (CH47976) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Injector/Testing and Inspection)Fuel Injector Diagnosis (J39021 or Scan Tool) (See: Powertrain Management/Fuel
Delivery and Air Induction/Fuel Injector/Testing and Inspection)
* Water intrusion in the B52 HO2S harness connector
* Low or high fuel system pressure-Refer to Fuel System Diagnosis (w/o FPCM) (See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Component Tests and General Diagnostics)Fuel System Diagnosis (FPCM) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics)
* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (
See: Powertrain Management/Fuel Delivery and Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis
(Special Tool))
* Fuel saturation of the evaporative emission (EVAP) canister
* Exhaust leaks near the B52 HO2S
* Engine vacuum leaks
* Engine oil consumption-Refer to Oil Consumption Diagnosis (See: Engine, Cooling and Exhaust/Engine/Testing and
Inspection/Component Tests and General Diagnostics/Oil Consumption Diagnosis)
* Engine coolant consumption-Refer to Loss of Coolant (See: Engine, Cooling and Exhaust/Cooling System/Testing and
Inspection/Symptom Related Diagnostic Procedures/Loss of Coolant)
锟斤拷If you find any of the above conditions, repair as necessary.
2. If all conditions test normal, test or replace the appropriate B52 HO2S.
Repair Instructions
Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
* Observe the DTC information with a scan tool. Verify there are no B52 HO2S heater or fuel trim DTCs set.
锟斤拷If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle).
* Engine idling at operating temperature, observe the appropriate B52 HO2S parameter with a scan tool. Verify the following:
- The B52 HO2S 1 value should vary from below 200 mV to above 800 mV and respond to fueling changes.
- The B52 HO2S 2 value should change greater than 200 mV when the throttle is quickly cycled 3 times from closed to wide open and
back to closed after running the engine at 1,500 RPM for 30 s.
* Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Verify none of the following conditions exist:
* Lean or rich fuel injectors-Refer to Fuel Injector Diagnosis (CH47976) (See: Powertrain Management/Fuel Delivery and Air
Induction/Fuel Injector/Testing and Inspection)Fuel Injector Diagnosis (J39021 or Scan Tool) (See: Powertrain Management/Fuel
Delivery and Air Induction/Fuel Injector/Testing and Inspection)
* Water intrusion in the B52 HO2S harness connector
* Low or high fuel system pressure-Refer to Fuel System Diagnosis (w/o FPCM) (See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Component Tests and General Diagnostics)Fuel System Diagnosis (FPCM) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics)
* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool) (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (
See: Powertrain Management/Fuel Delivery and Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis
(Special Tool))
* Fuel saturation of the evaporative emission (EVAP) canister
* Exhaust leaks near the B52 HO2S
* Engine vacuum leaks
* Engine oil consumption-Refer to Oil Consumption Diagnosis (See: Engine, Cooling and Exhaust/Engine/Testing and
Inspection/Component Tests and General Diagnostics/Oil Consumption Diagnosis)
* Engine coolant consumption-Refer to Loss of Coolant (See: Engine, Cooling and Exhaust/Cooling System/Testing and
Inspection/Symptom Related Diagnostic Procedures/Loss of Coolant)
锟斤拷If you find any of the above conditions, repair as necessary.
2. If all conditions test normal, test or replace the appropriate B52 HO2S.
Repair Instructions
Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control
Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) (See: Powertrain
Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control
Wednesday, October 30, 2019
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2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1577
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Inspect for DTCs P0ABB, P0ABC, P0ABD, loss of communication with the BECM U-code DTCs, or any other concern that would indicate
high voltage to the PIM was interrupted while high current was present.
锟斤拷If the specified DTCs are set, or high voltage interruption is suspected, diagnose them first. Refer to Diagnostic Trouble Code (DTC) List
- Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Clear the DTC information.
3. Ignition OFF for 1 minute.
4. Ignition ON.
5. Retest for DTCs P1AEC, P1AED, P1AEE and P1AEF.
If the DTC resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after programming or if the PIM
already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P1AED
DTC P1AEC-P1AEF
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P1AEC
- Drive Motor 1 Control Module Hybrid Battery System Voltage
DTC P1AED
- Drive Motor 2 Control Module Hybrid Battery System Voltage
DTC P1AEE
- Drive Motor 1 Control Module Hybrid Battery System Voltage High
DTC P1AEF
- Drive Motor 2 Control Module Hybrid Battery System Voltage High
Circuit/System Description
The drive motor generator power inverter control module (PIM) contains two motor control modules (MCMs). Each MCM measures hybrid battery
high voltage with several internal sensors. The battery energy control module (BECM) also monitors high voltage with several internal sensors. The
BECM high voltage measurement is broadcast over GMLAN.
P1AEC and P1AED
The MCM compares the values in order to verify the hybrid battery high voltage measurement is accurate.
P1AEE and P1AEF
The MCM monitors for high voltage that is greater than the system allows during normal operation.
Conditions for Running the DTC
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Inspect for DTCs P0ABB, P0ABC, P0ABD, loss of communication with the BECM U-code DTCs, or any other concern that would indicate
high voltage to the PIM was interrupted while high current was present.
锟斤拷If the specified DTCs are set, or high voltage interruption is suspected, diagnose them first. Refer to Diagnostic Trouble Code (DTC) List
- Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Clear the DTC information.
3. Ignition OFF for 1 minute.
4. Ignition ON.
5. Retest for DTCs P1AEC, P1AED, P1AEE and P1AEF.
If the DTC resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after programming or if the PIM
already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P1AED
DTC P1AEC-P1AEF
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P1AEC
- Drive Motor 1 Control Module Hybrid Battery System Voltage
DTC P1AED
- Drive Motor 2 Control Module Hybrid Battery System Voltage
DTC P1AEE
- Drive Motor 1 Control Module Hybrid Battery System Voltage High
DTC P1AEF
- Drive Motor 2 Control Module Hybrid Battery System Voltage High
Circuit/System Description
The drive motor generator power inverter control module (PIM) contains two motor control modules (MCMs). Each MCM measures hybrid battery
high voltage with several internal sensors. The battery energy control module (BECM) also monitors high voltage with several internal sensors. The
BECM high voltage measurement is broadcast over GMLAN.
P1AEC and P1AED
The MCM compares the values in order to verify the hybrid battery high voltage measurement is accurate.
P1AEE and P1AEF
The MCM monitors for high voltage that is greater than the system allows during normal operation.
Conditions for Running the DTC
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2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1219
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
1. Verify that DTC P0A80, P0A81 or P0BBD is not set.
锟斤拷If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle),
2. Ignition ON, observe the scan tool BECM hybrid battery temperature parameters. The readings should be between -39 and +95锟斤拷C (-38.2 and
+203锟斤拷F) with no greater than a 15锟斤拷C ( 59锟斤拷F) difference between any of the four temperature sensor readings. Refer to Temperature Versus
Resistance ().
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Verify that none of the following conditions exist:
* the inlet and outlet air vents do not have any obstructions or blockages
* the vent fan blades are not broken or damaged
* the internal foam seals are not missing or damaged
锟斤拷If any conditions are found, remove, repair or replace as necessary.
3. Ignition OFF, disconnect the X3 harness connector at the drive motor generator battery control module.
4. Test for 1k ohm-209k ohm between each of the terminals listed below. The resistance of each temperature sensor should be within the
specified range, and within 500 ohm of each other. Refer to Temperature Versus Resistance ().
* Sensor 1-5 V reference circuit terminal 1 and low reference circuit terminal 2
* Sensor 2-5 V Reference circuit terminal 3 and low reference circuit terminal 4
* Sensor 3-5 V Reference circuit terminal 5 and low reference circuit terminal 6
* Sensor 4-5 V Reference circuit terminal 7 and low reference circuit terminal 8
锟斤拷If not within the specified range, replace the drive motor battery sensor module wiring harness.
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
EL-48900 HEV Safety Kit
Circuit/System Verification
1. Verify that DTC P0A80, P0A81 or P0BBD is not set.
锟斤拷If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle),
2. Ignition ON, observe the scan tool BECM hybrid battery temperature parameters. The readings should be between -39 and +95锟斤拷C (-38.2 and
+203锟斤拷F) with no greater than a 15锟斤拷C ( 59锟斤拷F) difference between any of the four temperature sensor readings. Refer to Temperature Versus
Resistance ().
Circuit/System Testing
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
- Visually and functionally inspect the gloves before use.
- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or
not.
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Verify that none of the following conditions exist:
* the inlet and outlet air vents do not have any obstructions or blockages
* the vent fan blades are not broken or damaged
* the internal foam seals are not missing or damaged
锟斤拷If any conditions are found, remove, repair or replace as necessary.
3. Ignition OFF, disconnect the X3 harness connector at the drive motor generator battery control module.
4. Test for 1k ohm-209k ohm between each of the terminals listed below. The resistance of each temperature sensor should be within the
specified range, and within 500 ohm of each other. Refer to Temperature Versus Resistance ().
* Sensor 1-5 V reference circuit terminal 1 and low reference circuit terminal 2
* Sensor 2-5 V Reference circuit terminal 3 and low reference circuit terminal 4
* Sensor 3-5 V Reference circuit terminal 5 and low reference circuit terminal 6
* Sensor 4-5 V Reference circuit terminal 7 and low reference circuit terminal 8
锟斤拷If not within the specified range, replace the drive motor battery sensor module wiring harness.
Friday, October 25, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1175
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1175
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Operate the vehicle under the Conditions for Running the DTC.
4. Retest for DTCs P0AEE, P0AEF, P0AF0, P0AF3, P0AF4, P0AF5, P0BD2, P0BD3, P0BD4, P0BD7, P0BD8, P0BD9, P0BDC, P0BDD,
P0BDE, P0BE1, P0BE2 AND P0BE3.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P0AF3
DTC P0AEE, P0AEF, P0AF0, P0AF3-P0AF5, P0BD2-P0BD4, P0BD7-P0BD9, P0BDC-P0BDE, or P0BE1-P0BE3
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0AEE
- Drive Motor Inverter Temperature Sensor 1 Performance
DTC P0AEF
- Drive Motor Inverter Temperature Sensor 1 Circuit Low Voltage
DTC P0AF0
- Drive Motor Inverter Temperature Sensor 1 Circuit High Voltage
DTC P0AF3
- Drive Motor Inverter Temperature Sensor 2 Performance
DTC P0AF4
- Drive Motor Inverter Temperature Sensor 2 Circuit Low Voltage
DTC P0AF5
- Drive Motor Inverter Temperature Sensor 2 Circuit High Voltage
DTC P0BD2
- Drive Motor Inverter Temperature Sensor 3 Performance
DTC P0BD3
- Drive Motor Inverter Temperature Sensor 3 Circuit Low Voltage
DTC P0BD4
- Drive Motor Inverter Temperature Sensor 3 Circuit High Voltage
DTC P0BD7
- Drive Motor Inverter Temperature Sensor 4 Performance
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Circuit/System Verification
1. Clear the DTC information.
2. Ignition OFF for 1 minute.
3. Operate the vehicle under the Conditions for Running the DTC.
4. Retest for DTCs P0AEE, P0AEF, P0AF0, P0AF3, P0AF4, P0AF5, P0BD2, P0BD3, P0BD4, P0BD7, P0BD8, P0BD9, P0BDC, P0BDD,
P0BDE, P0BE1, P0BE2 AND P0BE3.
Circuit/System Testing
Program the PIM with the latest software version and recheck for DTCs.
If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.
P0AF3
DTC P0AEE, P0AEF, P0AF0, P0AF3-P0AF5, P0BD2-P0BD4, P0BD7-P0BD9, P0BDC-P0BDE, or P0BE1-P0BE3
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0AEE
- Drive Motor Inverter Temperature Sensor 1 Performance
DTC P0AEF
- Drive Motor Inverter Temperature Sensor 1 Circuit Low Voltage
DTC P0AF0
- Drive Motor Inverter Temperature Sensor 1 Circuit High Voltage
DTC P0AF3
- Drive Motor Inverter Temperature Sensor 2 Performance
DTC P0AF4
- Drive Motor Inverter Temperature Sensor 2 Circuit Low Voltage
DTC P0AF5
- Drive Motor Inverter Temperature Sensor 2 Circuit High Voltage
DTC P0BD2
- Drive Motor Inverter Temperature Sensor 3 Performance
DTC P0BD3
- Drive Motor Inverter Temperature Sensor 3 Circuit Low Voltage
DTC P0BD4
- Drive Motor Inverter Temperature Sensor 3 Circuit High Voltage
DTC P0BD7
- Drive Motor Inverter Temperature Sensor 4 Performance
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