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 Relay Output Short to Battery
DTC B3265 06 : Trunk Relay Output Short to Ground or Open

### Diagnostic Fault Information

Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | ---
Folding Top Cover Actuator Control | 1 | 1 | 1 | --
Trunk Release Relay Control | B3265 06, 1 | B3265 06, 1 | B3265 01, 1 | --
Rear Compartment Lid Ajar Switch Signal | 3 | 4 | 4 | --
Rear Compartment Lid Release Actuator Control | 2 | 2 | 2 | --
Rear Compartment Lock Actuator Unlock Signal | 2 | 2 | 2 | --
Folding Top Cover Actuator Ground | -- | 1 | -- | --
Rear Compartment Lid Release Actuator Ground | -- | 1 | -- | --
Rear Compartment Lid Ajar Switch Ground | -- | 4 | -- | --
Rear Compartment Lid Release Switch Ground | -- | 2 | -- | --
1. Rear Compartment Lid Release Malfunction 2. Rear Compartment Lid Release Switch Malfunction 3. Trunk Ajar Indicator Always On 4. Trunk Ajar Indicator Inoperative

### Circuit/System Description

When the rear compartment lid release switch is operated, the rear compartment lid release switch signal circuit to the body control module (BCM) is switched to ground. The BCM receives the rear compartment lid release switch input and applies ground to the trunk release relay control circuit. This energizes the trunk release relay coil, closing the switch side contacts, allowing battery voltage to be applied to the rear compartment lid release actuator and folding top cover actuator, releasing the buttresses and opening the rear compartment lid. Ground for the rear compartment lid release switch is provided at G300. The rear compartment lid ajar switch, rear compartment lid release actuator, and folding top cover actuator are provided ground at G301. For more detailed information concerning rear compartment lid release refer to Luggage Compartment Description and Operation .

### Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

### Conditions for Setting the DTC

#### B3265 01

This DTC will set when the BCM detects a short to voltage in the trunk release relay control circuit for 5 seconds or greater.

#### B3265 06

This DTC will set when the BCM detects a short to ground or open in the trunk release relay control circuit for 5 seconds or greater.

### Action Taken When the DTC Sets

When DTC B3265 is set as current, the BCM will disable the trunk release relay control circuit driver.

### Conditions for Clearing the DTC

• | The condition responsible for setting the DTC no longer exists.

• | You issue a scan tool CLEAR DTCs command.

• | A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.

### Reference Information

#### Schematic Reference

Release Systems Schematics

#### Connector End View Reference

Vehicle Access Connector End Views

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

• | Scan Tool Data Definitions

• | Scan Tool Data List

• | Scan Tool Output Controls

### Circuit/System Testing

1. Ignition OFF, disconnect the trunk release relay.
2. Connect a test lamp between the relay coil B+ circuit and the relay coil control circuit.
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, test or replace the trunk release relay.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Underhood Electrical Center or Junction Block Replacement

• | Relay Replacement

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