2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 248

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 248

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* GMLAN Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Wiring Repairs/GMLAN Wiring Repairs)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup, and programming

B153A

DTC B153A

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 B153A 00

- Liftgate Latch Switch Signal Circuit

DTC B153A 08

- Liftgate Latch Switch Signal Circuit Signal Invalid

Diagnostic Fault Information

Circuit/System Description

The ratchet, pawl, and sector switches are part of the liftgate latch assembly and are used by the liftgate module (LGM) to determine the state of the

latch during the process of latching or unlatching. The ratchet and pawl switches will be inactive when the primary and secondary latches are

latched, and the sector switch will be active during the power cinch function. Each of the latch switch signal circuits are supplied battery voltage

through a resistor and monitored within the LGM. The latch switches share a common low reference circuit from the LGM and when the switch