B3265

DTC B3265

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptor
DTC B3265 00
- Trunk/Hatch/Liftglass Release Output Circuit




Diagnostic Fault Information






Circuit/System Description

The body control module (BCM) provides a low side drive output that controls the trunk relay. The BCM monitors the voltage level on the trunk release relay control circuit to determine when a failure has occurred. The voltage level on this circuit should be high while the trunk relay is not energized, that is the trunk release feature has not been activated. Voltage will be less than 1V when the relay is energized. When the BCM receives a trunk release signal from a switch or keyless entry transmitter, it responds by applying ground to the trunk release relay control circuit, which energizes the trunk relay.


Conditions for Running the DTC

The system voltage is 9-16 volts.


Conditions for Setting the DTC

The BCM detects a fault in the trunk release relay control circuit when the output is active.


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 become a history DTC.
* A history DTC will clear after 50 ignition cycles.



Reference Information
Schematic Reference

Release Systems Schematics (Release Systems Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Luggage Compartment Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) 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. Ignition OFF, disconnect the TRUNK relay.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 85 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the control circuit terminal 87 for a short to ground. If the circuit tests normal, test or replace the TRUNK relay.

3. Connect a test lamp between the control circuit terminal 86 and the B+ circuit terminal 85.
4. 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.

5. If all circuits test normal, test or replace the TRUNK relay.



Component Testing

1. Ignition OFF, disconnect the TRUNK relay.
2. Test for 60 - 180 ohm between terminals 85 and 86.

• If not within the specified range, replace the relay.

3. Test for infinite resistance between the following terminals:

* 30 and 86
* 30 and 87
* 30 and 85
* 85 and 87


• If less than the specified value, replace the relay.

4. Install a 25A fused jumper wire between relay terminal 85 and 12V. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohm between terminals 30 and 87.

• If greater than the specified range, replace the relay.




Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Relay Replacement (Attached to Wire Harness) (Relay Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (Relay Replacement (Within an Electrical Center))
* Control Module References (Programming and Relearning) for BCM replacement, setup and programming