B3265
DTC B3265
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC B3265 00
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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 rear compartment lid unlatch relay. The BCM monitors the voltage level on the rear compartment lid unlatch relay control circuit to determine when a failure has occurred. The voltage level on this circuit should be high while the rear compartment lid unlatch relay is not energized, that is the trunk release feature has not been activated. Voltage will be less than 1 V when the relay is energized. When the BCM receives a trunk release signal from a switch or keyless entry transmitter, it responds by supplying a ground to the rear compartment lid unlatch relay control circuit, which energizes the rear compartment lid unlatch relay.
Conditions for Running the DTC
When the relay is being actively commanded by the BCM.
Conditions for Setting the DTC
The BCM detects a short to ground a short to voltage or an open/high resistance in the rear compartment lid unlatch relay control circuit when the output is active.
Action Taken When the DTC Sets
The rear compartment lid latch will not release when commanded.
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 Fuel Pump and Level Sensor Assembly
Description and Operation
Luggage Compartment Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
Command the Trunk Release with a scan tool. The rear compartment lid latch should activate and release the trunk lid.
Circuit/System Testing
1. Ignition OFF, disconnect the KR95B rear compartment lid unlatch relay.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 86 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 KR95B rear compartment lid unlatch relay.
3. Connect a test lamp between the control circuit terminal 85 and the B+ circuit terminal 86.
4. Command the trunk to RELEASE with a scan tool. The test lamp should illuminate during the RELEASE command.
• If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 body control module.
• 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 K9 body control module.
5. If all circuits test normal, test or replace the KR95B rear compartment lid unlatch relay.
Component Testing
1. Ignition OFF, disconnect the KR95B rear compartment lid unlatch relay.
2. Test for 60-180 ohms between terminals 85 and 86.
• If not within the specified range, replace the KR95B rear compartment lid unlatch 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 KR95B rear compartment lid unlatch relay.
4. Install a 5 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms between terminals 30 and 87.
• If greater than the specified range, replace the KR95B rear compartment lid unlatch relay.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Relay Replacement (Within an Electrical Center) Relay Replacement (Within an Electrical Center)Relay Replacement (Attached to Wire Harness) Relay Replacement (Attached to Wire Harness)
* Control Module References Control Module References for BCM replacement, programming and setup