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 B3130 00: Doors Unlock Circuit MalfunctionDTC B3135 00: Doors Lock Circuit Malfunction
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Liftgate Release Switch Signal | B3265 61 | 1 | 1 | -- |
Liftgate Latch Control | B3130 00, B3135 00 | 2 | 2 | -- |
Liftgate Latch Assembly Ground | -- | 2 | 2 | -- |
Liftgate Release Switch Ground | -- | 1 | 1 | -- |
1. Liftgate Release Switch Malfunction 2. Liftgate Release Malfunction | ||||
Circuit/System Description
Pressing the liftgate release switch closes a contact providing a ground for the liftgate release switch signal circuit. The rear fuse block will detect the voltage drop and command voltage to be supplied to the liftgate latch assembly which releases the liftgate.
Conditions for Running the DTC
The system voltage must be between 9-16 volts.
Conditions for Setting the DTC
The rear fuse block detects a short to ground in the liftgate latch assembly control circuit or an open F38 fuse.
Action Taken When the DTC Sets
The power door locks and liftgate release 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 become a history DTC. |
| • | A history DTC will clear after 50 ignition cycles. |
Diagnostic Aid
These DTCs will set if the F38 fuse is open.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics
Connector End View Reference
Description and Operation
Power Door Locks Description and Operation
Electrical Information Reference
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 latch should release the liftgate.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the liftgate latch assembly.
- Connect a test lamp between the control circuit terminal 1 and ground.
- Ignition ON, command the liftgate release ON and OFF by pressing and releasing the liftgate release switch. The test lamp should turn ON and OFF when changing between the commanded states.
- If all circuits test normal, test or replace the liftgate latch assembly.
| ⇒ | If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear fuse block. |
| ⇒ | If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear fuse block. |
Component Testing
- Ignition OFF, disconnect the harness connector at the liftgate latch.
- Install a 20A fused jumper wire between the control terminal 1 and 12 volts. Install a jumper wire between the ground terminal 2 and ground. Verify the liftgate latch activates.
| ⇒ | If the latch does not perform as specified, replace the liftgate latch. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for rear fuse block replacement, setup, and programming |
