2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 302
1. Ignition OFF, disconnect the harness connector at the liftglass latch assembly.
2. Test for less than 5 Ohms between the ground circuit terminal 3 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify the scan tool Liftgate Ajar Switch parameter is Inactive.
瀚慖f not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the LGM.
4. Install a 3A fused jumper wire between the signal circuit terminal 4 and ground. Verify the scan tool Liftgate Ajar Switch parameter is
Active.
瀚慖f not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the
LGM.
5. If all circuits test normal, test or replace the liftglass latch assembly.
Component Testing
1. Ignition OFF, disconnect the harness connector at the liftglass latch assembly.
2. Test for infinite resistance between the signal terminal 4 and the ground terminal 3 with the switch in the open position.
瀚慖f not the specified value, replace the liftglass latch assembly.
3. Test for less than 2 Ohms between the signal terminal 4 and the ground terminal 3 with the switch in the closed position.
瀚慖f not the specified value, replace the liftglass latch assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Liftgate Window Latch Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Latch/Service and
Repair/Liftgate Window Latch Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for LGM replacement, setup, and programming
HVAC - Manual
DTC B0413, B0423, B0433, B3779, or B3782
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B0413 02
- Temperature Control 1 Feedback Circuit Short to Ground
DTC B0413 05
- Temperature Control 1 Feedback Circuit Short to Battery or Open
DTC B0413 61
- Temperature Control 1 Feedback Circuit Actuator Stuck Open
DTC B0423 02
- Temperature Control 2 Feedback Circuit Short to Ground
DTC B0423 05
- Temperature Control 2 Feedback Circuit Short to Battery or Open
DTC B0423 61
- Temperature Control 2 Circuit Actuator Stuck
