2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 599

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 599

瀚慖f not the specified value, replace the liftgate handle switch.

3. Test for less than 2 ohms between the signal terminal A and the low reference terminal B with the switch in the closed position.

瀚慖f greater than the specified range, replace the liftgate handle switch.

Liftgate Close Switch

1. Ignition OFF, disconnect the harness connector at the liftgate close switch.

2. Test for infinite resistance between the signal terminal D and the low reference terminal A with the switch in the open position.

瀚慖f not the specified value, replace the liftgate close switch.

3. Test for less than 2 ohms between the signal terminal D and the low reference terminal A with the switch in the closed position.

瀚慖f greater than the specified range, replace the liftgate close switch.

Repair Instructions

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

* Liftgate Release Switch Replacement (Except Avalanche and Escalade EXT) (See: Body and Frame/Doors, Hood and Trunk/Trunk /

Liftgate/Trunk / Liftgate Switch/Service and Repair/Liftgate Release Switch Replacement (Except Avalanche and Escalade EXT))

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

programming and setup

Manual Liftgate

DTC B2494 (Manual Liftgate)

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 B2494 00

- Liftgate Handle Switch Circuit

Diagnostic Fault Information

Circuit/System Description

The liftgate release switch is an input to the body control module (BCM). The BCM monitors the signal circuit and when the release switch is

activated the signal circuit voltage goes low. The BCM controls the liftgate release actuator through the liftgate latch release relay. When the

release switch signal is activated, the BCM enables the liftgate latch release relay by applying battery voltage to the liftgate latch release relay

supply circuit and the relay is energized when the BCM grounds the liftgate latch release relay control circuit. When the relay is energized battery

voltage is supplied to the liftgate release actuator through the liftgate release actuator control circuit.

Conditions for Running the DTC

The system voltage is 9-16 volts.