2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 249

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 249

contacts close the signal circuit goes low and the LGM determines the switch to be active. The full open switch is a limit switch mounted on the

gear motor assembly alongside the swing arm gear. The full open switch signal circuit is supplied battery voltage through a resistor and monitored

within the LGM. When the liftgate reaches the full open position, the switch signal circuit is closed to the low reference circuit and the signal

circuit voltage goes low.

Conditions for Running the DTC

The system voltage is 9-16 volts.

Conditions for Setting the DTC

B153A 00

The LGM detects a fault in any of the following switch signal circuits:

* Ratchet switch

* Pawl switch

* Sector switch

B153A 08

When the LGM detects a loss of B+ voltage, an open/high resistance in the sensor signal circuit, an open/high resistance in the liftgate latch low

reference circuit, or any incorrect combination of signals from the following switch inputs:

* Ratchet switch

* Pawl switch

* Sector switch

Action Taken When the DTC Sets

* Power open will be disabled.

* The latch may be inoperative or not function normally.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.

* When the fault is no longer present, the DTC will be a history DTC.

* A history DTC will clear after 50 ignition cycles.

Diagnostic Aids

DTC B153A may be set when the vehicle is driven while the liftgate is open, as when the owner transports a large package in the rear of the

vehicle. The DTC will become history after the liftgate is closed and does not affect normal liftgate operation.

Note: Before testing can be performed the liftgate must be opened. Refer to Opening the Liftgate Without Electrical Power (See: Body and

Frame/Doors, Hood and Trunk/Trunk / Liftgate/Service and Repair/Procedures) for the appropriate procedure.

Whenever the LGM loses power or is disconnected, the ignition must be cycled OFF then ON in order to reactivate the LGM.

Reference Information

Schematic Reference

Liftgate Schematics (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Liftgate Description and Operation (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/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)