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 B3265 01: Trunk Release Output Circuit Short to Battery
DTC B3265 06: Trunk Release Output Circuit Short to Ground or Open

### Diagnostic Fault Information

Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | ---
Trunk Release Relay B+ | 2 | 2 | -- | --
Rear Compartment Lid Release Switch Signal | 1 | 1 | 1 | --
Trunk Release Relay Control | B3265 06 | B3265 06 | B3265 01 | --
Rear Compartment Lid Release Switch Ground | -- | 1 | 1 | --
Rear Compartment Lid Release Actuator Ground | -- | 2 | 2 | --
1. Rear Compartment Lid Release Switch Malfunction 2. Rear Compartment Lid Release Malfunction

### Circuit/System Description

When the rear compartment lid release switch is pressed, the rear compartment lid release signal circuit to the body control module (BCM) is grounded. When the rear compartment lid release signal circuit is grounded, the BCM grounds the coil side of the trunk release relay through the trunk release relay control circuit. With ground applied to the coil side of the trunk release relay, voltage is applied to the rear compartment lid release actuator, opening the rear compartment.

### Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

### Conditions for Setting the DTC

#### B3265 01

The BCM detects a short to battery in the trunk relay output circuit.

#### B3265 06

The BCM detects an open or short to ground in the trunk relay output circuit.

### Action Taken When the DTC Sets

The rear compartment lid latch will malfunction.

### 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

Luggage Compartment 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 Trunk Release with a scan tool. The rear compartment lid release actuator should release the trunk lid.

### Circuit/System Testing

1. Disconnect the X2 harness connector at the underhood fuse block.
2. Connect a test lamp between the control circuit terminal B10 and B+.
3. Command the Trunk Release ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.

⇒ | If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.

⇒ | If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.

4. If all circuits test normal, replace the underhood fuse block.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Underhood Electrical Center or Junction Block Bracket Replacement

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