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Liftgate Latch Release/Cinch Malfunction - DTC B2495

Liftgate Latch Release/Cinch Malfunction - DTC B2495

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

DTC B2495 04

Liftgate Latch Control Circuit Open

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Latch Control Terminal 1 B2495 02 B2495 04 B2495 01 -
Latch Control Terminal 2 B2495 02 B2495 04 B2495 01 -


Circuit/System Description

The latch motor is a bi-directional motor and cinch or unlatch operation is the result of the direction of the motor rotation. The liftgate control module controls the latch motor through the control circuits by supplying power and ground in the appropriate polarity. The motor control circuits are monitored by the liftgate control module prior to activation for a high or low condition and during motor operation for an insufficient current flow condition.

Conditions for Running the DTC

The system voltage is 9-16 V.

Conditions for Setting the DTC

B2495 01

The liftgate control module detects a short to voltage in the liftgate latch motor cinch control circuit or the liftgate latch motor release control circuit.

B2495 02

The liftgate control module detects a short to ground in the liftgate latch motor cinch control circuit or the liftgate latch motor release control circuit.

B2495 04

The liftgate control module detects an open/high resistance in the liftgate latch motor cinch control circuit or the liftgate latch motor release control circuit.

Action Taken When the DTC Sets

The liftgate will be inoperative in the power and manual modes.

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


If the liftgate will not release from the closed position, refer to Opening the Liftgate Without Electrical Power for the appropriate procedure

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

DTC B2495 01 may be set due to minor fluctuations in the system voltage. The power liftgate will continue to function normally and only requires that the DTC be cleared when encountered.


Reference Information

Schematic Reference

Liftgate Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Liftgate Description and Operation

Electrical Information Reference


Testing for Intermittent Conditions and Poor Connections

Circuit Testing

Wiring Repairs

Connector Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification


1. Ignition OFF, transmission in Park, using either the power door lock switches or the remote keyless entry transmitter, LOCK all doors and then UNLOCK all doors. This will set the liftgate module door lock status to unlock

2. Manually open the liftgate. The A23C liftgate latch assembly should release allowing the liftgate to be pulled open.


Circuit/System Testing


1. Ignition OFF, disconnect the X2 harness connector at the K39 liftgate control module.

2. Test for less than 15 Ω between the control circuit terminal 1 and the control circuit terminal 2.

3. If greater than the specified range, test either control circuit for a short to voltage or an open/high resistance. If circuits test normal, test or replace the M31 liftgate latch assembly.

4. Verify that a test lamp does not illuminate between the control circuit terminal 1 and B+.

5. If the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, test or replace the A23C liftgate latch assembly.

6. Verify that a test lamp does not illuminate between the control circuit terminal 2 and B+.

7. If the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, test or replace the A23C liftgate latch assembly.

8. If all circuits test normal, replace the K39 liftgate control module


Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.


Liftgate Latch Replacement

Control Module References for liftgate control module replacement, setup and programming