2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 712
DTC Descriptor
DTC B3631 00
- Adjustable Foot Pedal Inhibit Circuit
Diagnostic Fault Information
Circuit/System Description
Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. The park enable relay is controlled by
the body control module (BCM) through a high side drive control circuit and will be energized whenever the ignition is in the accessory, run, or
crank positions and the transmission is in reverse or the cruise control is engaged.
Conditions for Running the DTC
* The ignition is ON.
* The BCM attempts to energize the park enable relay.
Conditions for Setting the DTC
The BCM detects a short to ground on the park enable relay control circuit while attempting to activate the output.
Action Taken When the DTC Sets
The output will be disabled.
Conditions for Clearing the DTC
* The DTC becomes history when the conditions for setting the DTC are no longer present.
* The history DTC clears after 100 malfunction-free ignition cycles.
Reference Information
Schematic Reference
Adjustable Pedal Schematics (See: Accessories and Optional Equipment/Pedal Positioning System/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Adjustable Pedals Description and Operation (with Memory) (See: Accessories and Optional Equipment/Pedal Positioning System/Description
and Operation/Adjustable Pedals Description and Operation (with Memory))Adjustable Pedals Description and Operation (w/o Memory) (See:
Accessories and Optional Equipment/Pedal Positioning System/Description and Operation/Adjustable Pedals Description and Operation (w/o
Memory))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, transmission in reverse, attempt to operate the adjustable pedals. The adjustable pedals should be disabled.
Showing posts with label DTC Descriptor. Show all posts
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Friday, December 6, 2019
Wednesday, November 20, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 348
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 348
DTC Descriptor
DTC B1008 00
- Calibration Data Not Programmed
Circuit/System Description
When replacing a remote control door lock receiver (RCDLR), the service replacement part is shipped with no installed software. Before the new
RCDLR is operational, a software calibration is required to be downloaded using the SPS terminal. Failure to download this software calibration
will result in the setting of DTC B1008.
Conditions for Running the DTC
This DTC runs continuously
Conditions for Setting the DTC
The RCDLR has no calibration loaded.
Action Taken When the DTC Sets
All functions handled by the RCDLR are inoperative
Conditions for Clearing the DTC
A current DTC will clear when software calibrations are installed.
Reference Information
Schematic Reference
Remote Function Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry
Transmitter/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Keyless Entry System Description and Operation (Without Accessory 2 Way Remote) (See: Accessories and Optional Equipment/Antitheft and
Alarm Systems/Keyless Entry/Description and Operation/Keyless Entry System Description and Operation (Without Accessory 2 Way Remote)
)Keyless Entry System Description and Operation (With Accessory 2 Way Remote) (See: Accessories and Optional Equipment/Antitheft and
Alarm Systems/Keyless Entry/Description and Operation/Keyless Entry System Description and Operation (With Accessory 2 Way Remote))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Perform the RCDLR Programming and Setup procedure. Refer to Remote Control Door Lock Receiver Programming and Setup (See: Accessories
and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry Receiver/Testing and Inspection).
If the DTC resets, replace the RCDLR.
Repair Instructions
Important: This vehicle may be equipped with the 2 Way Advanced Remote Start System. Vehicle equipped with the 2 Way Advanced
Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing
the 2 Way Advanced Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the 2 Way
Advanced Remote Start System can be found in the Accessory section of the parts manual.
DTC Descriptor
DTC B1008 00
- Calibration Data Not Programmed
Circuit/System Description
When replacing a remote control door lock receiver (RCDLR), the service replacement part is shipped with no installed software. Before the new
RCDLR is operational, a software calibration is required to be downloaded using the SPS terminal. Failure to download this software calibration
will result in the setting of DTC B1008.
Conditions for Running the DTC
This DTC runs continuously
Conditions for Setting the DTC
The RCDLR has no calibration loaded.
Action Taken When the DTC Sets
All functions handled by the RCDLR are inoperative
Conditions for Clearing the DTC
A current DTC will clear when software calibrations are installed.
Reference Information
Schematic Reference
Remote Function Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry
Transmitter/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Keyless Entry System Description and Operation (Without Accessory 2 Way Remote) (See: Accessories and Optional Equipment/Antitheft and
Alarm Systems/Keyless Entry/Description and Operation/Keyless Entry System Description and Operation (Without Accessory 2 Way Remote)
)Keyless Entry System Description and Operation (With Accessory 2 Way Remote) (See: Accessories and Optional Equipment/Antitheft and
Alarm Systems/Keyless Entry/Description and Operation/Keyless Entry System Description and Operation (With Accessory 2 Way Remote))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Perform the RCDLR Programming and Setup procedure. Refer to Remote Control Door Lock Receiver Programming and Setup (See: Accessories
and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry Receiver/Testing and Inspection).
If the DTC resets, replace the RCDLR.
Repair Instructions
Important: This vehicle may be equipped with the 2 Way Advanced Remote Start System. Vehicle equipped with the 2 Way Advanced
Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing
the 2 Way Advanced Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the 2 Way
Advanced Remote Start System can be found in the Accessory section of the parts manual.
Monday, November 18, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 933
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 933
DTC Descriptor
DTC C0397 64
- Transfer Case Clutch Performance Actuator Slipping
Diagnostic Fault Information
Circuit/System Description
In 4WD Auto mode, the transfer case shift control module (TCCM) monitors the front and rear wheel speed sensors for slip. If the TCCM detects
slip, and is unable to correct for a difference between the front and rear speed sensors, it will command the transfer case to apply the clutch.
Conditions for Running the DTC
* Ignition ON.
* System voltage 10.5-18 V.
Conditions for Setting the DTC
The transfer case is unable to correct for slip.
Action Taken When the DTC Sets
* Shifting is still possible but in a reduced capacity which may cause undesirable slip correction events.
* The SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.
Conditions for Clearing the DTC
* The TCCM clears the DTC once the conditions for setting the DTC are no longer present.
* A history DTC clears after 40 consecutive warm up cycles without a fault present.
* History DTCs can be cleared using a scan tool.
Diagnostic Aids
Faulty wheel speed sensors can cause this DTC to set. When driving at a steady speed, the scan tool should display the same values for the
following data parameters in the electronic brake control module (EBCM):
* Left and right front wheel speed sensors
* Left and right rear wheel speed sensors
Reference Information
Schematic Reference
Transfer Case Control Schematics (See: Transmission and Drivetrain/Transfer Case/Diagrams/Electrical Diagrams/MP 3010-NP0 - Transfer Case)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
Circuit/System Verification
1. Ignition ON, engine OFF.
DTC Descriptor
DTC C0397 64
- Transfer Case Clutch Performance Actuator Slipping
Diagnostic Fault Information
Circuit/System Description
In 4WD Auto mode, the transfer case shift control module (TCCM) monitors the front and rear wheel speed sensors for slip. If the TCCM detects
slip, and is unable to correct for a difference between the front and rear speed sensors, it will command the transfer case to apply the clutch.
Conditions for Running the DTC
* Ignition ON.
* System voltage 10.5-18 V.
Conditions for Setting the DTC
The transfer case is unable to correct for slip.
Action Taken When the DTC Sets
* Shifting is still possible but in a reduced capacity which may cause undesirable slip correction events.
* The SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.
Conditions for Clearing the DTC
* The TCCM clears the DTC once the conditions for setting the DTC are no longer present.
* A history DTC clears after 40 consecutive warm up cycles without a fault present.
* History DTCs can be cleared using a scan tool.
Diagnostic Aids
Faulty wheel speed sensors can cause this DTC to set. When driving at a steady speed, the scan tool should display the same values for the
following data parameters in the electronic brake control module (EBCM):
* Left and right front wheel speed sensors
* Left and right rear wheel speed sensors
Reference Information
Schematic Reference
Transfer Case Control Schematics (See: Transmission and Drivetrain/Transfer Case/Diagrams/Electrical Diagrams/MP 3010-NP0 - Transfer Case)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
Circuit/System Verification
1. Ignition ON, engine OFF.
Sunday, November 17, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 838
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 838
DTC Descriptor
DTC C056D 39
- ECU Hardware Performance Internal Electronic Failure
Circuit/System Description
The power steering control module (PSCM) continuously monitors the internal circuitry within the module.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
This DTC will set if the PSCM detects an internal malfunction within the module.
Actions Taken When DTC Sets
* DTC C056D is stored in memory.
* The driver information center (DIC) displays the SERVICE POWER STEERING warning message.
* No steering assist.
Conditions for Clearing the DTC
* A current DTC will clear on the next malfunction free ignition cycle.
* A history DTC will clear after 100 consecutive malfunction-free ignition cycles, without the repeat of the internal malfunction.
Reference Information
Schematic Reference
Power Steering Schematics (See: Steering and Suspension/Steering/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Power Steering System Description and Operation (Hydraulic Power Steering) (See: Steering and Suspension/Steering/Description and
Operation/Power Steering System Description and Operation (Hydraulic Power Steering))Power Steering System Description and Operation (EPS)
(See: Steering and Suspension/Steering/Description and Operation/Power Steering System Description and Operation (EPS))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
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
DTC Descriptor
DTC C056D 39
- ECU Hardware Performance Internal Electronic Failure
Circuit/System Description
The power steering control module (PSCM) continuously monitors the internal circuitry within the module.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
This DTC will set if the PSCM detects an internal malfunction within the module.
Actions Taken When DTC Sets
* DTC C056D is stored in memory.
* The driver information center (DIC) displays the SERVICE POWER STEERING warning message.
* No steering assist.
Conditions for Clearing the DTC
* A current DTC will clear on the next malfunction free ignition cycle.
* A history DTC will clear after 100 consecutive malfunction-free ignition cycles, without the repeat of the internal malfunction.
Reference Information
Schematic Reference
Power Steering Schematics (See: Steering and Suspension/Steering/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Power Steering System Description and Operation (Hydraulic Power Steering) (See: Steering and Suspension/Steering/Description and
Operation/Power Steering System Description and Operation (Hydraulic Power Steering))Power Steering System Description and Operation (EPS)
(See: Steering and Suspension/Steering/Description and Operation/Power Steering System Description and Operation (EPS))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
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
Saturday, November 16, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 755
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 755
DTC Descriptor
DTC B3631 00
- Adjustable Foot Pedal Inhibit Circuit
Diagnostic Fault Information
Circuit/System Description
Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. The park enable relay is controlled by
the body control module (BCM) through a high side drive control circuit and will be energized whenever the ignition is in the accessory, run, or
crank positions and the transmission is in reverse or the cruise control is engaged.
Conditions for Running the DTC
* The ignition is ON.
* The BCM attempts to energize the park enable relay.
Conditions for Setting the DTC
The BCM detects a short to ground on the park enable relay control circuit while attempting to activate the output.
Action Taken When the DTC Sets
The output will be disabled.
Conditions for Clearing the DTC
* The DTC becomes history when the conditions for setting the DTC are no longer present.
* The history DTC clears after 100 malfunction-free ignition cycles.
Reference Information
Schematic Reference
Adjustable Pedal Schematics (See: Accessories and Optional Equipment/Pedal Positioning System/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Adjustable Pedals Description and Operation (with Memory) (See: Accessories and Optional Equipment/Pedal Positioning System/Description
and Operation/Adjustable Pedals Description and Operation (with Memory))Adjustable Pedals Description and Operation (w/o Memory) (See:
Accessories and Optional Equipment/Pedal Positioning System/Description and Operation/Adjustable Pedals Description and Operation (w/o
Memory))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, transmission in reverse, attempt to operate the adjustable pedals. The adjustable pedals should be disabled.
DTC Descriptor
DTC B3631 00
- Adjustable Foot Pedal Inhibit Circuit
Diagnostic Fault Information
Circuit/System Description
Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. The park enable relay is controlled by
the body control module (BCM) through a high side drive control circuit and will be energized whenever the ignition is in the accessory, run, or
crank positions and the transmission is in reverse or the cruise control is engaged.
Conditions for Running the DTC
* The ignition is ON.
* The BCM attempts to energize the park enable relay.
Conditions for Setting the DTC
The BCM detects a short to ground on the park enable relay control circuit while attempting to activate the output.
Action Taken When the DTC Sets
The output will be disabled.
Conditions for Clearing the DTC
* The DTC becomes history when the conditions for setting the DTC are no longer present.
* The history DTC clears after 100 malfunction-free ignition cycles.
Reference Information
Schematic Reference
Adjustable Pedal Schematics (See: Accessories and Optional Equipment/Pedal Positioning System/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Adjustable Pedals Description and Operation (with Memory) (See: Accessories and Optional Equipment/Pedal Positioning System/Description
and Operation/Adjustable Pedals Description and Operation (with Memory))Adjustable Pedals Description and Operation (w/o Memory) (See:
Accessories and Optional Equipment/Pedal Positioning System/Description and Operation/Adjustable Pedals Description and Operation (w/o
Memory))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, transmission in reverse, attempt to operate the adjustable pedals. The adjustable pedals should be disabled.
Friday, November 15, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 696
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 696
DTC Descriptor
DTC B2870 01
- Tilt Up Switch Circuit Short to Battery
DTC B2875 01
- Tilt Down Switch Circuit Short to Battery
Diagnostic Fault Information
Circuit Description
The memory seat module (MSM) receives voltage inputs from the tilt switch based on the position of the switch. The MSM then supplies battery
voltage and a ground to the tilt motor control circuits depending on which direction of movement is requested.
Conditions for Running the DTC
The ignition ON.
Conditions for Setting the DTC
The MSM detects a tilt switch input for more than 30 consecutive seconds after the tilt motor movement has stopped.
Action Taken When the DTC Sets
* The tilt motor will be deactivated.
* Memory recall functions will be disabled.
Conditions for Clearing the DTC
* A current DTC will clear when the failed switch input is no longer active.
* A history DTC will clear after 100 ignition cycles.
Diagnostic Aids
An intermittently stuck tilt switch may cause a DTC to set.
Reference Information
Schematic Reference
Steering Wheel Schematics (See: Diagrams/Electrical Diagrams/Steering/Steering Column/Steering Wheel Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Steering Wheel and Column Description and Operation (See: Steering and Suspension/Steering/Steering Column/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for Scan Tool Information
DTC Descriptor
DTC B2870 01
- Tilt Up Switch Circuit Short to Battery
DTC B2875 01
- Tilt Down Switch Circuit Short to Battery
Diagnostic Fault Information
Circuit Description
The memory seat module (MSM) receives voltage inputs from the tilt switch based on the position of the switch. The MSM then supplies battery
voltage and a ground to the tilt motor control circuits depending on which direction of movement is requested.
Conditions for Running the DTC
The ignition ON.
Conditions for Setting the DTC
The MSM detects a tilt switch input for more than 30 consecutive seconds after the tilt motor movement has stopped.
Action Taken When the DTC Sets
* The tilt motor will be deactivated.
* Memory recall functions will be disabled.
Conditions for Clearing the DTC
* A current DTC will clear when the failed switch input is no longer active.
* A history DTC will clear after 100 ignition cycles.
Diagnostic Aids
An intermittently stuck tilt switch may cause a DTC to set.
Reference Information
Schematic Reference
Steering Wheel Schematics (See: Diagrams/Electrical Diagrams/Steering/Steering Column/Steering Wheel Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Steering Wheel and Column Description and Operation (See: Steering and Suspension/Steering/Steering Column/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for Scan Tool Information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 687
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 687
DTC Descriptor
DTC B2725 08
- Active Transfer Case Mode Switch Circuit - Signal Invalid
Diagnostic Fault Information
Circuit/System Description
The transfer case shift control switch (TCSCS) has 3 modes. The transfer case shift control module (TCCM) supplies a regulated 5 V DC to the
switch through the 5-volt reference circuit. The current travels through the specific resistor of the currently selected mode, each mode has its own
resistor. The current is then returned to the TCCM through the switch signal circuit.
The TCCM continuously monitors the switch signal circuit to determine whether a mode change has been requested by the driver.
The NP0 transfer case has the following 3 modes:
* 2 Hi
* 4WD Auto
* 4 Hi
Conditions for Running the DTC
* Ignition ON.
* System voltage 10.5-18 V.
Conditions for Setting the DTC
* The system constantly monitors the voltage on switch signal circuit.
* If the system detects a voltage level under 0.38 volts or greater than 4.86 volts for 60 seconds, the DTC is logged.
Action Taken When the DTC Sets
* All shifting is disabled.
* The SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.
* Failure Records will be stored.
Conditions for Clearing the DTC
* The TCCM will clear the current DTC once the conditions for setting the DTC are no longer present.
* A history DTC clears after 40 consecutive warm up cycles without a fault present.
* History DTCs can be cleared using a scan tool.
Diagnostic Aids
EL-49742 - harness is a good source for B+ and ground.
Reference Information
Schematic Reference
Transfer Case Control Schematics (See: Transmission and Drivetrain/Transfer Case/Diagrams/Electrical Diagrams/MP 3023/3024-NQH -
Transfer Case)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
DTC Descriptor
DTC B2725 08
- Active Transfer Case Mode Switch Circuit - Signal Invalid
Diagnostic Fault Information
Circuit/System Description
The transfer case shift control switch (TCSCS) has 3 modes. The transfer case shift control module (TCCM) supplies a regulated 5 V DC to the
switch through the 5-volt reference circuit. The current travels through the specific resistor of the currently selected mode, each mode has its own
resistor. The current is then returned to the TCCM through the switch signal circuit.
The TCCM continuously monitors the switch signal circuit to determine whether a mode change has been requested by the driver.
The NP0 transfer case has the following 3 modes:
* 2 Hi
* 4WD Auto
* 4 Hi
Conditions for Running the DTC
* Ignition ON.
* System voltage 10.5-18 V.
Conditions for Setting the DTC
* The system constantly monitors the voltage on switch signal circuit.
* If the system detects a voltage level under 0.38 volts or greater than 4.86 volts for 60 seconds, the DTC is logged.
Action Taken When the DTC Sets
* All shifting is disabled.
* The SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.
* Failure Records will be stored.
Conditions for Clearing the DTC
* The TCCM will clear the current DTC once the conditions for setting the DTC are no longer present.
* A history DTC clears after 40 consecutive warm up cycles without a fault present.
* History DTCs can be cleared using a scan tool.
Diagnostic Aids
EL-49742 - harness is a good source for B+ and ground.
Reference Information
Schematic Reference
Transfer Case Control Schematics (See: Transmission and Drivetrain/Transfer Case/Diagrams/Electrical Diagrams/MP 3023/3024-NQH -
Transfer Case)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 677
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 677
DTC Descriptor
DTC B2615 00
- Passenger Compartment Dimming 2 Circuit
Diagnostic Fault Information
Circuit/System Description
Voltage for the courtesy lamps is supplied from body control module (BCM), driver door switch, and passenger door switch. When a door is
opened, a signal is applied to the door module. The door module then applies a message on the low speed serial data communication circuit to the
BCM to activate the courtesy lamps. The BCM then applies voltage to the courtesy lamps voltage supply circuit and the components on that circuit.
Conditions for Running the DTC
* Battery Voltage must be between 9-16 V.
* The ignition is ON.
* The BCM, driver door switch, and passenger door switch attempt to illuminate the courtesy lamps.
Conditions for Setting the DTC
The BCM, driver door switch, or passenger door switch detect a short to ground, short to voltage, or open on the courtesy lamp voltage supply
circuit.
Action Taken When the DTC Sets
DTC Descriptor
DTC B2615 00
- Passenger Compartment Dimming 2 Circuit
Diagnostic Fault Information
Circuit/System Description
Voltage for the courtesy lamps is supplied from body control module (BCM), driver door switch, and passenger door switch. When a door is
opened, a signal is applied to the door module. The door module then applies a message on the low speed serial data communication circuit to the
BCM to activate the courtesy lamps. The BCM then applies voltage to the courtesy lamps voltage supply circuit and the components on that circuit.
Conditions for Running the DTC
* Battery Voltage must be between 9-16 V.
* The ignition is ON.
* The BCM, driver door switch, and passenger door switch attempt to illuminate the courtesy lamps.
Conditions for Setting the DTC
The BCM, driver door switch, or passenger door switch detect a short to ground, short to voltage, or open on the courtesy lamp voltage supply
circuit.
Action Taken When the DTC Sets
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DTC Descriptor
DTC B2585 00
- Park Lamp Control Circuit
Diagnostic Fault Information
Circuit/System Description
Voltage is applied at all times to the park lamp relay from battery voltage. When the headlamp switch is placed in the PARK position and the body
control module (BCM) commands the park lamps ON, the BCM then applies a ground to the park lamp relay control circuit. This engages the relay
and applies voltage through the park lamp fuses and to all the park, license, and tail lamps.
Conditions for Running the DTC
* The Ignition is ON.
* The park lamps must be commanded ON by the BCM.
Conditions for Setting the DTC
The BCM detects a short to voltage on the park lamp relay control circuit.
Action Taken When the DTC Sets
All park, license, and tail lamps are inoperative.
Conditions for Clearing the DTC
* The conditions for setting the DTC are no longer present.
* A history DTC clears after 100 malfunction-free ignition cycles.
* The BCM receives the clear code command from the scan tool.
Reference Information
Schematic Reference
Exterior Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Exterior Lights Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems Description
and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
DTC Descriptor
DTC B2585 00
- Park Lamp Control Circuit
Diagnostic Fault Information
Circuit/System Description
Voltage is applied at all times to the park lamp relay from battery voltage. When the headlamp switch is placed in the PARK position and the body
control module (BCM) commands the park lamps ON, the BCM then applies a ground to the park lamp relay control circuit. This engages the relay
and applies voltage through the park lamp fuses and to all the park, license, and tail lamps.
Conditions for Running the DTC
* The Ignition is ON.
* The park lamps must be commanded ON by the BCM.
Conditions for Setting the DTC
The BCM detects a short to voltage on the park lamp relay control circuit.
Action Taken When the DTC Sets
All park, license, and tail lamps are inoperative.
Conditions for Clearing the DTC
* The conditions for setting the DTC are no longer present.
* A history DTC clears after 100 malfunction-free ignition cycles.
* The BCM receives the clear code command from the scan tool.
Reference Information
Schematic Reference
Exterior Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Exterior Lights Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems Description
and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 664
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DTC Descriptor
DTC 2575 00
- Headlamp Control Circuit
Diagnostic Fault Information
Circuit/System Description
When the Headlamp and Panel Dimmer Switch is placed in the headlamp ON position, ground is applied to the body control module (BCM)
through the headlamp low beam signal circuit. The BCM then applies ground to the HDLP LO/HID Relay control circuit which energizes the low
beam relay. With the low beam relay energized, the switch contacts close allowing B+ to flow through the LOW HDLP fuses to the low beam
headlamps.
Conditions for Running the DTC
* Battery voltage must be between 9-16 V.
* Headlamps must be ON.
Conditions for Setting the DTC
The BCM detects a short to voltage in the headlamp low beam relay control circuit.
Actions Taken When the DTC Sets
The low beam headlamps will not operate.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
Headlights/Daytime Running Lights (DRL) Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System
Diagram/Headlights/Daytime Running Lights (DRL) Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems Description
DTC Descriptor
DTC 2575 00
- Headlamp Control Circuit
Diagnostic Fault Information
Circuit/System Description
When the Headlamp and Panel Dimmer Switch is placed in the headlamp ON position, ground is applied to the body control module (BCM)
through the headlamp low beam signal circuit. The BCM then applies ground to the HDLP LO/HID Relay control circuit which energizes the low
beam relay. With the low beam relay energized, the switch contacts close allowing B+ to flow through the LOW HDLP fuses to the low beam
headlamps.
Conditions for Running the DTC
* Battery voltage must be between 9-16 V.
* Headlamps must be ON.
Conditions for Setting the DTC
The BCM detects a short to voltage in the headlamp low beam relay control circuit.
Actions Taken When the DTC Sets
The low beam headlamps will not operate.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
Headlights/Daytime Running Lights (DRL) Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System
Diagram/Headlights/Daytime Running Lights (DRL) Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems Description
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 657
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DTC Descriptor
DTC B2530 00
- Front Fog Lamps Control Circuit
Diagnostic Fault Information
Circuit/System Description
The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch signal circuit is grounded momentarily by pressing
the front fog lamp switch. The body control module (BCM) energizes the front fog lamp relay by applying ground to the front fog lamp relay
control circuit. When the front fog lamp relay is energized, the relay switch contacts close and battery voltage is applied through the FOG LAMP
fuse to the front fog lamp supply voltage circuit which illuminates the front fog lamps.
Conditions for Running the DTC
* Battery voltage must be between 9-16 V.
* Front fog lamps ON.
Conditions for Setting the DTC
The BCM detects a short to voltage in the front fog lamp relay control circuit for 5 seconds or greater.
Actions Taken When the DTC Sets
The front fog lamps will not operate when the park lamps are ON and the front fog lamp switch is active.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
Fog Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Fog Lights Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems Description
and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Descriptor
DTC B2530 00
- Front Fog Lamps Control Circuit
Diagnostic Fault Information
Circuit/System Description
The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch signal circuit is grounded momentarily by pressing
the front fog lamp switch. The body control module (BCM) energizes the front fog lamp relay by applying ground to the front fog lamp relay
control circuit. When the front fog lamp relay is energized, the relay switch contacts close and battery voltage is applied through the FOG LAMP
fuse to the front fog lamp supply voltage circuit which illuminates the front fog lamps.
Conditions for Running the DTC
* Battery voltage must be between 9-16 V.
* Front fog lamps ON.
Conditions for Setting the DTC
The BCM detects a short to voltage in the front fog lamp relay control circuit for 5 seconds or greater.
Actions Taken When the DTC Sets
The front fog lamps will not operate when the park lamps are ON and the front fog lamp switch is active.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.
Reference Information
Schematic Reference
Fog Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Fog Lights Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems Description
and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Tuesday, November 12, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 440
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DTC Descriptor
DTC B1259 02
- Antenna Ground Circuit Short to Ground
DTC B1259 05
- Antenna Ground Circuit Short to Battery or Open
Diagnostic Fault Information
Circuit/System Description
The digital radio receiver (DRR) receives an XM satellite radio signal via the digital radio antenna. This signal is passed to the DRR through the
digital radio antenna coax. The DRR sends a varying AC mV signal through separate left and right audio circuits (+ and -) to the radio. The voltage
amount and rate of change is dependent upon the type of signal being received. The radio then processes these signals and passes the audio to the
appropriate speakers or amplifier.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
B1259 02
The DRR detects a short to ground in the antenna circuit.
B1259 05
The DRR detects a short to voltage or an open in the antenna circuit.
Action Taken When the DTC Sets
The radio displays No XM Signal.
Conditions for Clearing the DTC
* A current DTC will clear when the conditions for setting the DTC are no longer present.
* A history DTC clears after 100 malfunction-free ignition cycles.
Diagnostic Aids
When diagnosing digital radio concerns, the vehicle should be located outside with an unobstructed view of the southern sky to ensure proper
reception of the satellite signal. Reception may limited, intermittent or not possible inside structures or under heavy cover.
Reference Information
Schematic Reference
Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System
Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
DTC Descriptor
DTC B1259 02
- Antenna Ground Circuit Short to Ground
DTC B1259 05
- Antenna Ground Circuit Short to Battery or Open
Diagnostic Fault Information
Circuit/System Description
The digital radio receiver (DRR) receives an XM satellite radio signal via the digital radio antenna. This signal is passed to the DRR through the
digital radio antenna coax. The DRR sends a varying AC mV signal through separate left and right audio circuits (+ and -) to the radio. The voltage
amount and rate of change is dependent upon the type of signal being received. The radio then processes these signals and passes the audio to the
appropriate speakers or amplifier.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
B1259 02
The DRR detects a short to ground in the antenna circuit.
B1259 05
The DRR detects a short to voltage or an open in the antenna circuit.
Action Taken When the DTC Sets
The radio displays No XM Signal.
Conditions for Clearing the DTC
* A current DTC will clear when the conditions for setting the DTC are no longer present.
* A history DTC clears after 100 malfunction-free ignition cycles.
Diagnostic Aids
When diagnosing digital radio concerns, the vehicle should be located outside with an unobstructed view of the southern sky to ensure proper
reception of the satellite signal. Reception may limited, intermittent or not possible inside structures or under heavy cover.
Reference Information
Schematic Reference
Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System
Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
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DTC Descriptor
DTC B1001 00
- Option Configuration Error
DTC B1001 45
- Option Configuration Error Variant Not Programmed
DTC B1001 46
- Option Configuration Error
DTC B1001 4B
- Option Configuration Error Calibration Not Learned
Circuit/System Description
Some control modules must be configured with serial numbers, vehicle options, or other information. If a control module was not properly
configured after installation, that module may set DTC B1001.
Conditions for Running the DTC
Battery voltage is between 9-16 volts and data link communications operate normally.
Conditions for Setting the DTC
The control module is not configured properly.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.
Circuit/System Verification
1. Program or configure the module or related module that set DTC B1001. The module should successfully configure.
瀚慖f the module will not configure, replace the module that set the DTC.
2. With a scan tool, clear the DTC.
3. Ignition OFF, remove the scan tool, open and close the drivers door.
4. Wait 60 seconds, then recheck for DTCs. DTC B1001 should not set.
瀚慖f DTC B1001 sets, replace the module.
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 control module replacement, setup, and programming
Supplemental Inflatable Restraint
DTC B1001 (SDM)
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 B1001 00
- SDM Option Configuration Error
DTC Descriptor
DTC B1001 00
- Option Configuration Error
DTC B1001 45
- Option Configuration Error Variant Not Programmed
DTC B1001 46
- Option Configuration Error
DTC B1001 4B
- Option Configuration Error Calibration Not Learned
Circuit/System Description
Some control modules must be configured with serial numbers, vehicle options, or other information. If a control module was not properly
configured after installation, that module may set DTC B1001.
Conditions for Running the DTC
Battery voltage is between 9-16 volts and data link communications operate normally.
Conditions for Setting the DTC
The control module is not configured properly.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.
Circuit/System Verification
1. Program or configure the module or related module that set DTC B1001. The module should successfully configure.
瀚慖f the module will not configure, replace the module that set the DTC.
2. With a scan tool, clear the DTC.
3. Ignition OFF, remove the scan tool, open and close the drivers door.
4. Wait 60 seconds, then recheck for DTCs. DTC B1001 should not set.
瀚慖f DTC B1001 sets, replace the module.
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 control module replacement, setup, and programming
Supplemental Inflatable Restraint
DTC B1001 (SDM)
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 B1001 00
- SDM Option Configuration Error
Tuesday, November 5, 2019
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2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1168
DTC Descriptor
DTC P0AFA
- Hybrid Battery System Voltage Low - ACCM 300V
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The air conditioner control module (ACCM) monitors the high voltage direct current (HVDC) voltage to ensure that the voltage stays within the
proper range. Damage to components, and incorrect data may occur when the voltage is out of range. If the ACCM detects low HVDC voltage,
then DTC P0AFA will set.
Conditions for Running the DTC
* The engine is running or is in autostop mode.
* The 12V system voltage is between 9.5-18 V.
Conditions for Setting the DTC
The ACCM detects that the hybrid battery voltage is less than 191 volts for 3 seconds.
Action Taken When the DTC Sets
The air conditioning is disabled.
Conditions for Clearing the DTC
* The DTC will pass when the ACCM detects a hybrid battery voltage greater than 201 V for 3 seconds.
* A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
Reference Information
Schematic Reference
* HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Automatic)
* Hybrid Controls Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
* Heating and Air Conditioning System Description and Operation (HP2) ()
* High Voltage Monitoring Systems Description ()
DTC Descriptor
DTC P0AFA
- Hybrid Battery System Voltage Low - ACCM 300V
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The air conditioner control module (ACCM) monitors the high voltage direct current (HVDC) voltage to ensure that the voltage stays within the
proper range. Damage to components, and incorrect data may occur when the voltage is out of range. If the ACCM detects low HVDC voltage,
then DTC P0AFA will set.
Conditions for Running the DTC
* The engine is running or is in autostop mode.
* The 12V system voltage is between 9.5-18 V.
Conditions for Setting the DTC
The ACCM detects that the hybrid battery voltage is less than 191 volts for 3 seconds.
Action Taken When the DTC Sets
The air conditioning is disabled.
Conditions for Clearing the DTC
* The DTC will pass when the ACCM detects a hybrid battery voltage greater than 201 V for 3 seconds.
* A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
Reference Information
Schematic Reference
* HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Automatic)
* Hybrid Controls Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
* Heating and Air Conditioning System Description and Operation (HP2) ()
* High Voltage Monitoring Systems Description ()
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2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1121
DTC Descriptor
DTC P0AB9
- Hybrid System Performance
Circuit/System Description
This vehicle does not use a 12V starter motor to crank the internal combustion engine. A much more powerful 300V drive motor generator located
within the transmission is utilized to crank the engine. The 300V drive motor generator can rotate the engine to operating speed (800 RPM) within
just a few hundred milliseconds. The HPCM can detect a condition where the engine is cranking but does not start or has stalled.
Conditions for Running the DTC
Drive motor generator 1 is cranking the engine.
Conditions for Setting the DTC
The HPCM detects that CKP engine speed has not risen above the commanded cranking speed indicating the engine has failed to start, or the
HPCM detects CKP engine speed has fallen below a specific minimum speed indicating the engine has stalled.
Action Taken When the DTC Sets
DTC P0AB9 is a Type A DTC.
Cranks But Does Not Start
When the ignition is turned to Crank, the HPCM will command drive motor generator 1 to rotate the engine. The drive motor will continue to rotate
the engine at a specific RPM until the engine starts and causes increased engine RPM. The HPCM will cease engine rotation if an increase in
engine RPM is not observed after several seconds. This function may have the appearance of a start/stall condition.
Engine Stall
If a stall occurs after a successful engine start, the HPCM will recognize the drop in engine RPM and command drive motor generator 1 to maintain
engine RPM in an attempt to restart the engine. Drive motor generator 1 will continue to rotate the engine until the HPCM commands it to stop. The
engine may be rotated for many minutes after the actual engine stall condition occurred and is typically stopped only after the hybrid battery state of
charge (SOC) gets too low. This function may have the appearance of a running engine.
Conditions for Clearing the DTC
DTC P0AB9 is a Type A DTC.
Diagnostic Aids
Any condition that causes the engine to stall and/or not start may set this DTC. Possible conditions include:
* Fuel conditions such as low level, low pressure, or contamination.
* Engine conditions such as low compression.
* Restricted exhaust or air intake systems.
Always inspect for DTCs that would cause an engine stall and/or no start condition. Because the hybrid system can rotate the engine at high RPM,
stall and cranks-but-does-not-start conditions act differently than a non-hybrid vehicle. Refer to Action Taken When the DTC Sets.
Circuit/System Verification
Turn the ignition to Crank. The engine should start and run.
If the engine fails to start, diagnose the engine system. Refer to Engine Cranks But Does Not Run (See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Symptom Related Diagnostic Procedures).
If the engine starts and runs the condition is intermittent.
P0ACB
DTC P0A9C-P0A9E, P0AC6-P0AC8, P0ACB-P0ACD, P0AE9, P0AEA, or P0AEB
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.
DTC Descriptor
DTC P0AB9
- Hybrid System Performance
Circuit/System Description
This vehicle does not use a 12V starter motor to crank the internal combustion engine. A much more powerful 300V drive motor generator located
within the transmission is utilized to crank the engine. The 300V drive motor generator can rotate the engine to operating speed (800 RPM) within
just a few hundred milliseconds. The HPCM can detect a condition where the engine is cranking but does not start or has stalled.
Conditions for Running the DTC
Drive motor generator 1 is cranking the engine.
Conditions for Setting the DTC
The HPCM detects that CKP engine speed has not risen above the commanded cranking speed indicating the engine has failed to start, or the
HPCM detects CKP engine speed has fallen below a specific minimum speed indicating the engine has stalled.
Action Taken When the DTC Sets
DTC P0AB9 is a Type A DTC.
Cranks But Does Not Start
When the ignition is turned to Crank, the HPCM will command drive motor generator 1 to rotate the engine. The drive motor will continue to rotate
the engine at a specific RPM until the engine starts and causes increased engine RPM. The HPCM will cease engine rotation if an increase in
engine RPM is not observed after several seconds. This function may have the appearance of a start/stall condition.
Engine Stall
If a stall occurs after a successful engine start, the HPCM will recognize the drop in engine RPM and command drive motor generator 1 to maintain
engine RPM in an attempt to restart the engine. Drive motor generator 1 will continue to rotate the engine until the HPCM commands it to stop. The
engine may be rotated for many minutes after the actual engine stall condition occurred and is typically stopped only after the hybrid battery state of
charge (SOC) gets too low. This function may have the appearance of a running engine.
Conditions for Clearing the DTC
DTC P0AB9 is a Type A DTC.
Diagnostic Aids
Any condition that causes the engine to stall and/or not start may set this DTC. Possible conditions include:
* Fuel conditions such as low level, low pressure, or contamination.
* Engine conditions such as low compression.
* Restricted exhaust or air intake systems.
Always inspect for DTCs that would cause an engine stall and/or no start condition. Because the hybrid system can rotate the engine at high RPM,
stall and cranks-but-does-not-start conditions act differently than a non-hybrid vehicle. Refer to Action Taken When the DTC Sets.
Circuit/System Verification
Turn the ignition to Crank. The engine should start and run.
If the engine fails to start, diagnose the engine system. Refer to Engine Cranks But Does Not Run (See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Symptom Related Diagnostic Procedures).
If the engine starts and runs the condition is intermittent.
P0ACB
DTC P0A9C-P0A9E, P0AC6-P0AC8, P0ACB-P0ACD, P0AE9, P0AEA, or P0AEB
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.
Sunday, November 3, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2013
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 2013
DTC Descriptor
DTC P181C
- Internal Mode Switch 2 R1 Circuit Low Voltage
DTC P181D
- Internal Mode Switch 2 R1 Circuit High Voltage
DTC P181E
- Internal Mode Switch 2 R2 Circuit Low Voltage
DTC P181F
- Internal Mode Switch 2 R2 Circuit High Voltage
DTC P183A
- Internal Mode Switch 2 D1 Circuit Low Voltage
DTC P183B
- Internal Mode Switch 2 D1 Circuit High Voltage
DTC P183C
- Internal Mode Switch 2 D2 Circuit Low Voltage
DTC P183D
- Internal Mode Switch 2 D2 Circuit High Voltage
DTC P183E
- Internal Mode Switch 2 - Invalid Range
DTC P184A
- Internal Mode Switch 2 S Circuit Low Voltage
DTC P184B
- Internal Mode Switch 2 S Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
DTC Descriptor
DTC P181C
- Internal Mode Switch 2 R1 Circuit Low Voltage
DTC P181D
- Internal Mode Switch 2 R1 Circuit High Voltage
DTC P181E
- Internal Mode Switch 2 R2 Circuit Low Voltage
DTC P181F
- Internal Mode Switch 2 R2 Circuit High Voltage
DTC P183A
- Internal Mode Switch 2 D1 Circuit Low Voltage
DTC P183B
- Internal Mode Switch 2 D1 Circuit High Voltage
DTC P183C
- Internal Mode Switch 2 D2 Circuit Low Voltage
DTC P183D
- Internal Mode Switch 2 D2 Circuit High Voltage
DTC P183E
- Internal Mode Switch 2 - Invalid Range
DTC P184A
- Internal Mode Switch 2 S Circuit Low Voltage
DTC P184B
- Internal Mode Switch 2 S Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Friday, November 1, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1775
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1775
DTC Descriptor
DTC P16F9
- Control Module Shutdown Performance
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM and each
Motor Control Module (MCM) utilize a programmable logic device (PLD) to perform certain input and output functions. The HPCM monitors the
ability of the PLD to perform these functions.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected the internal PLD has not turned ON or OFF correctly.
Action Taken When the DTC Sets
* DTC P16F9 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P16F9 is a Type A DTC.
Diagnostic Aids
A low 12V battery condition, an intermittent loss of power, or loss of communication to the drive motor generator power inverter module assembly
(PIM) may set this DTC.
Reference Information
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
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 DTC P0562 or any communication U-code DTCs.
锟斤拷If the specified DTCs have set, repair 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 DTC P16F9.
Circuit/System Testing
1. Inspect for DTC P0562 or any communication DTCs.
锟斤拷If the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Ignition OFF.
3. Wait 2 minutes.
4. Disconnect PIM connector X1.
5. Wait 2 minutes.
6. Reconnect PIM connector X1.
7. Ignition ON, retest for DTC P16F9.
DTC Descriptor
DTC P16F9
- Control Module Shutdown Performance
Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module (HPCM). The HPCM and each
Motor Control Module (MCM) utilize a programmable logic device (PLD) to perform certain input and output functions. The HPCM monitors the
ability of the PLD to perform these functions.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
The control module has detected the internal PLD has not turned ON or OFF correctly.
Action Taken When the DTC Sets
* DTC P16F9 is a Type A DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
DTC P16F9 is a Type A DTC.
Diagnostic Aids
A low 12V battery condition, an intermittent loss of power, or loss of communication to the drive motor generator power inverter module assembly
(PIM) may set this DTC.
Reference Information
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
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 DTC P0562 or any communication U-code DTCs.
锟斤拷If the specified DTCs have set, repair 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 DTC P16F9.
Circuit/System Testing
1. Inspect for DTC P0562 or any communication DTCs.
锟斤拷If the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Ignition OFF.
3. Wait 2 minutes.
4. Disconnect PIM connector X1.
5. Wait 2 minutes.
6. Reconnect PIM connector X1.
7. Ignition ON, retest for DTC P16F9.
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2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 3131
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 3131
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Action Taken When the DTC Sets
* The vehicle stability enhancement system (VSES), if equipped, and traction control system (TCS) will not function.
* System OFF lamps will illuminate for these systems.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.
Diagnostic Aids
* Sometimes, while diagnosing a specific customer concern or after a repair, you may notice a history U-code present. However, there is no
associated "current" or "active" status. Loss-of- communication U-codes such as these can set for a variety of reasons. Many times, they are
transparent to the vehicle operator and technician, and/or have no associated symptoms. Eventually, they will erase themselves automatically
after a number of fault-free ignition cycles. This condition would most likely be attributed to one of these scenarios:
- A control module on the data communication circuit was disconnected while the communication circuit is awake.
- Power to one or more modules was interrupted during diagnosis.
- A low battery condition was present, so some control modules stop communicating when battery voltage drops below a certain threshold.
- Battery power was restored to the vehicle and control modules on the communication circuit did not all re-initialize at the same time.
- If a loss-of-communication U-code appears in history for no apparent reason, it is most likely associated with one of the scenarios above.
These are all temporary conditions and should never be interpreted as an intermittent fault, causing you to replace a part.
* A control module may have a U-code stored in history that does not require any repairs. Issues with late or corrupted messages between
control modules can be temporary with no apparent symptom or complaint; this does not mean the control module is faulty. Do not replace a
control module based only on a history U-code.
* Do not replace a control module reporting a U-code. The U-code identifies which control module needs to be diagnosed for a communication
issue.
* Communication may be available between the BCM and the scan tool with either the low or high speed GMLAN serial data system
inoperative. This condition is due to the BCM using both the low and high speed GMLAN systems.
* Use to determine if the module uses high or low speed GMLAN serial data communications.
* Some control modules may not have internal protection for specific control circuits and may open a B+ or ignition fuse. If a fuse is open and
the B+ or ignition circuit is not shorted to ground, ensure none of the control circuits are shorted to ground before replacing the control
module.
* This diagnostic can be used for any control module that is not communicating, regardless of the type of serial data circuit it is connected to,
providing the vehicle is equipped with the control module.
Reference Information
Schematic Reference
* Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical
DTC Descriptor
DTC U2142 00
- Lost Communication With Yaw Rate Sensor (YRS)
Circuit/System Description
Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating
information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be
exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an
availability indication of the transmitter module. Each message contains the identification number of the transmitter module.
The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the
ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus
serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain
Management/Computers and Control Systems/Information Bus/Description and Operation).
Conditions for Running the DTC
* The system voltage is between 9-16 volts.
* The vehicle power mode master requires serial data communication to occur.
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Action Taken When the DTC Sets
* The vehicle stability enhancement system (VSES), if equipped, and traction control system (TCS) will not function.
* System OFF lamps will illuminate for these systems.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.
Diagnostic Aids
* Sometimes, while diagnosing a specific customer concern or after a repair, you may notice a history U-code present. However, there is no
associated "current" or "active" status. Loss-of- communication U-codes such as these can set for a variety of reasons. Many times, they are
transparent to the vehicle operator and technician, and/or have no associated symptoms. Eventually, they will erase themselves automatically
after a number of fault-free ignition cycles. This condition would most likely be attributed to one of these scenarios:
- A control module on the data communication circuit was disconnected while the communication circuit is awake.
- Power to one or more modules was interrupted during diagnosis.
- A low battery condition was present, so some control modules stop communicating when battery voltage drops below a certain threshold.
- Battery power was restored to the vehicle and control modules on the communication circuit did not all re-initialize at the same time.
- If a loss-of-communication U-code appears in history for no apparent reason, it is most likely associated with one of the scenarios above.
These are all temporary conditions and should never be interpreted as an intermittent fault, causing you to replace a part.
* A control module may have a U-code stored in history that does not require any repairs. Issues with late or corrupted messages between
control modules can be temporary with no apparent symptom or complaint; this does not mean the control module is faulty. Do not replace a
control module based only on a history U-code.
* Do not replace a control module reporting a U-code. The U-code identifies which control module needs to be diagnosed for a communication
issue.
* Communication may be available between the BCM and the scan tool with either the low or high speed GMLAN serial data system
inoperative. This condition is due to the BCM using both the low and high speed GMLAN systems.
* Use to determine if the module uses high or low speed GMLAN serial data communications.
* Some control modules may not have internal protection for specific control circuits and may open a B+ or ignition fuse. If a fuse is open and
the B+ or ignition circuit is not shorted to ground, ensure none of the control circuits are shorted to ground before replacing the control
module.
* This diagnostic can be used for any control module that is not communicating, regardless of the type of serial data circuit it is connected to,
providing the vehicle is equipped with the control module.
Reference Information
Schematic Reference
* Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1679
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1679
DTC Descriptor
DTC P1AFC
- Drive Motor 1 Control Module Serial Peripheral Interface (SPI) Bus
DTC P1AFD
- Drive Motor 1 Control Module Serial Communications Interface (SCI) Bus
DTC P1B02
- Drive Motor 2 Control Module Serial Peripheral Interface (SPI) Bus
Circuit/System Description
This is an internal fault detection of the drive motor generator power inverter module (PIM) assembly. This fault is handled inside the PIM and no
external circuits are involved. The PIM contains two motor control modules (MCMs) and the hybrid powertrain control module (HPCM). In
addition to GM LAN, these modules share dedicated, internal PIM communications circuits.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
P1AFC
MCM 1 detects a loss of SPI bus communication with the HPCM.
P1AFD
MCM 1 detects a loss of SCI bus communication with MCM 2 for 2 seconds.
P1B02
MCM 2 detects a loss of SPI bus communication with the HPCM.
Action Taken When the DTC Sets
* DTCs P1AFC and P1B02 are Type A DTCs.
* DTC P1AFD is a Type B DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
* DTCs P1AFC and P1B02 are Type A DTCs.
* DTC P1AFD is a Type B DTC.
Reference Information
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. Ignition ON.
4. Retest for DTCs P1AFC, P1AFD and P1B02.
Circuit/System Testing
Ignition ON, retest for DTCs P1AFC, P1AFD and P1B02.
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.
DTC Descriptor
DTC P1AFC
- Drive Motor 1 Control Module Serial Peripheral Interface (SPI) Bus
DTC P1AFD
- Drive Motor 1 Control Module Serial Communications Interface (SCI) Bus
DTC P1B02
- Drive Motor 2 Control Module Serial Peripheral Interface (SPI) Bus
Circuit/System Description
This is an internal fault detection of the drive motor generator power inverter module (PIM) assembly. This fault is handled inside the PIM and no
external circuits are involved. The PIM contains two motor control modules (MCMs) and the hybrid powertrain control module (HPCM). In
addition to GM LAN, these modules share dedicated, internal PIM communications circuits.
Conditions for Running the DTC
* The control module runs the program to detect an internal fault when the key is ON.
* Ignition voltage is 8-18V.
Conditions for Setting the DTC
P1AFC
MCM 1 detects a loss of SPI bus communication with the HPCM.
P1AFD
MCM 1 detects a loss of SCI bus communication with MCM 2 for 2 seconds.
P1B02
MCM 2 detects a loss of SPI bus communication with the HPCM.
Action Taken When the DTC Sets
* DTCs P1AFC and P1B02 are Type A DTCs.
* DTC P1AFD is a Type B DTC.
* The HPCM commands the battery energy control module (BECM) to open the high voltage contactor relays.
Conditions for Clearing the DTC
* DTCs P1AFC and P1B02 are Type A DTCs.
* DTC P1AFD is a Type B DTC.
Reference Information
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. Ignition ON.
4. Retest for DTCs P1AFC, P1AFD and P1B02.
Circuit/System Testing
Ignition ON, retest for DTCs P1AFC, P1AFD and P1B02.
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.
Wednesday, October 30, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1582
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1582
DTC Descriptor
DTC P1ADE
- Drive Motor 1 Control Module System Voltage Low
DTC P1AE0
- Drive Motor 2 Control Module System Voltage Low
Circuit/System Description
The drive motor generator power inverter module (PIM) contains two motor control modules (MCM) and a hybrid powertrain control module
(HPCM). The HPCM and both MCMs share the PIM ignition voltage circuit, battery voltage circuits and chassis ground.
Conditions for Running the DTC
Ignition is ON
Conditions for Setting the DTC
MCM ignition voltage is less than 7.7 V for 1 second.
Action Taken When the DTC Sets
DTCs P1ADE and P1AE0 are Type C DTCs.
Conditions for Clearing the DTC
DTCs P1ADE and P1AE0 are Type C DTCs.
Reference Information
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. Turn the ignition OFF for 1 minute.
3. Turn the ignition ON.
4. Retest for DTCs P1ADE and P1AE0.
Circuit/System Testing
Test for HPCM DTC P0562.
Perform HPCM P0562 diagnosis if set.
If HPCM P0562 is not set, 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.
P1AE2
DTC P1AE2-P1AE4, P1B05, or P1B06
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 P1ADE
- Drive Motor 1 Control Module System Voltage Low
DTC P1AE0
- Drive Motor 2 Control Module System Voltage Low
Circuit/System Description
The drive motor generator power inverter module (PIM) contains two motor control modules (MCM) and a hybrid powertrain control module
(HPCM). The HPCM and both MCMs share the PIM ignition voltage circuit, battery voltage circuits and chassis ground.
Conditions for Running the DTC
Ignition is ON
Conditions for Setting the DTC
MCM ignition voltage is less than 7.7 V for 1 second.
Action Taken When the DTC Sets
DTCs P1ADE and P1AE0 are Type C DTCs.
Conditions for Clearing the DTC
DTCs P1ADE and P1AE0 are Type C DTCs.
Reference Information
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. Turn the ignition OFF for 1 minute.
3. Turn the ignition ON.
4. Retest for DTCs P1ADE and P1AE0.
Circuit/System Testing
Test for HPCM DTC P0562.
Perform HPCM P0562 diagnosis if set.
If HPCM P0562 is not set, 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.
P1AE2
DTC P1AE2-P1AE4, P1B05, or P1B06
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.
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