For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• | Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### DTC Descriptors

DTC B2495 01: Liftgate Latch Control Circuit Short to Battery
DTC B2495 02: Liftgate Latch Control Circuit Short to Ground

### Diagnostic Fault Information

Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | ---
Liftgate Relay Switch B+ | 2 | 2 | -- | --
Liftgate Release Switch Signal | B3265 00 | B3265 00 | B3265 00 | --
Liftgate Relay Low Control | -- | 2 | 2 | --
Liftgate Relay Coil High Control | B2495 02 | 2 | B2495 01 | --
Liftgate Latch Control | 2 | 2 | 2 | --
Liftgate Release Switch Ground | -- | 1 | 1 | --
Liftgate Latch Ground | -- | 2 | 2 | --
1. Liftgate Release Switch Inoperative 2. Liftgate Latch Inoperative

### Circuit/System Description

Pressing the liftgate release switch closes a contact providing a ground for the rear closure handle switch open signal circuit. The body control module (BCM) will detect the voltage drop and command voltage to be supplied to the liftgate latch relay supply voltage circuit thus energizing the liftgate relay which provides voltage to the liftgate latch releasing the liftgate.

### Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

### Conditions for Setting the DTC

#### B2495 01

The BCM detects a short to voltage on the liftgate relay high control circuit.

#### B2495 02

The BCM detects a short to ground on the liftgate relay high control circuit.

### Action Taken When the DTC Sets

The liftgate latch will be inoperative

### 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.

### Reference Information

#### Schematic Reference

Release Systems Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Rear Hatch/Gate Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

Command the liftgate latch to release by pressing the liftgate release switch. The liftgate release actuator should release the liftgate.

### Circuit/System Testing

1. Ignition OFF, disconnect the X4 and X7 harness connectors at the BCM.
2. Connect a 10A fused jumper wire between the control circuit terminal 13 and B+. Verify the liftgate latch does not activate.

⇒ | If the liftgate latch activates, test the control circuit terminal 22 for a short to ground. If the circuit tests normal replace the I/P fuse block.

⇒ | If the fuse in the jumper wire opens, test the control circuit terminal 13 for a short to ground. If the circuit tests normal replace the I/P fuse block.

3. If all circuits test normal, replace the BCM.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Instrument Panel Electrical Center or Junction Block Replacement

• | Control Module References for BCM replacement, setup, and programming