DTC Descriptor
DTC B2495: Liftgate Latch Control CircuitDiagnostic Fault Information
Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit/System Description
The liftgate latch is a power cinching type. The latch contains 3 sector switches to determine the position of the liftgate in the latch pawl. When the sector switches determine that liftgate is fully latched, the liftgate module applies voltage and a ground path to the cinching motor in the liftgate latch to fully close the liftgate.
The liftgate latch is also used when releasing the liftgate. When a liftgate request is seen by the liftgate module, the module applies voltage and a ground path in an opposite manner. This releases the cinch motor, releasing the liftgate and allowing the liftgate motor to begin opening the assembly.
Conditions for Running the DTC
A liftgate event is requested.
Conditions for Setting the DTC
One of the following faults is detected on the liftgate latch motor open control circuit or the liftgate latch motor close control circuit:
| • | A short to battery |
| • | A short to ground |
| • | An open |
Action Taken When the DTC Sets
| • | If the liftgate is in motion when the DTC sets, liftgate operation will be halted and resort to manual operation. |
| • | If the liftgate is not in motion when the DTC sets, all liftgate functions will be suspended. |
Conditions for Clearing the DTC
A fault is not longer seen or a scan tool is used to clear the DTC.
Reference Information
Schematic Reference
Connector End View Reference
Body Rear End Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Operate the power liftgate. The liftgate latch should release when opening and cinch when closing.
Circuit/System Testing
- Ignition OFF, disconnect the liftgate module harness connector C2.
- With a DMM, test for 1-3 ohms of resistance between the control circuit terminal 1 and the control circuit terminal 2.
- Test for infinite resistance between the control circuit terminal 1 and ground.
- If all circuits test normal, test or replace the liftgate module.
| ⇒ | If resistance is not within the specified range, test both circuits for an open/high resistance. |
| ⇒ | If less than infinite resistance, test both circuits for a short to ground. |
Component Testing
- Ignition OFF, disconnect the harness connector at the liftgate latch.
- Install a 3-amp fused jumper wire between the control circuit terminal 1 and 12 volts. Install a jumper wire between the control circuit terminal 2 and ground.
- Observe the operation of the liftgate latch to ensure the latch motor operates.
| ⇒ | If the latch motor does not operate, replace the liftgate latch. |
Repair Instructions
Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for liftgate module replacement, setup and programming
