• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Relay Switch B+ | 2 | 2 | -- | -- |
Liftgate Release Switch Signal | 1 | 1 | -- | -- |
Liftgate Release Relay Control | B3265 06 | B3265 06 | B3265 01 | -- |
Relay Controlled Output Circuit | 2 | 2 | 2 | -- |
Liftgate Release Switch Ground | -- | 1 | 1 | -- |
Liftgate Door Latch Ground | -- | 2 | 2 | -- |
1. Liftgate Release Switch Inoperative 2. Liftgate Release Inoperative |
The body control module (BCM) provides voltage to the liftgate release relay control circuit thus energizing the L/GATE RELSE relay which provides voltage to the liftgate latch releasing the liftgate.
The system voltage is 9-16 volts.
The BCM detects a short to battery in the liftgate release relay control circuit.
The BCM detects an open or short to ground in the liftgate release relay control circuit.
The liftgate latch will malfunction.
• | 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. |
Before testing can be performed the liftgate must be opened. Refer to Opening the Liftgate Without Electrical Power for the appropriate procedure.
Rear Hatch/Gate Description and Operation
Control Module References for scan tool information
Command all the doors to UNLOCK by using the door lock switch, command the liftgate door latch to release by pressing the liftgate release switch. The liftgate door latch should release the liftgate.
⇒ | If the test lamp is always OFF, test the control circuit for an open/high resistance. |
⇒ | If the test lamp is always ON, test the control circuit for a short to ground. |
⇒ | If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM. |
⇒ | 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 BCM. |
⇒ | If not within the specified range, replace the relay. |
• | 30 and 86 |
• | 30 and 87 |
• | 30 and 85 |
• | 85 and 87 |
⇒ | If not the specified value, replace the relay. |
⇒ | If greater than the specified range, replace the relay. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for BCM replacement, setup and programming |