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 02
- Trunk Lid Unlatch Output Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) applies battery positive voltage to the liftgate release relay control circuit, which energizes the coil side of the liftgate release relay. The switch side of the liftgate release relay then closes, supplying battery positive voltage through the relay and the relay controlled output circuit to the rear closure latch. The rear closure latch then releases the rear hatch so that it may be manually raised to an open position.
Conditions for Running the DTC
When the rear closure latch is actively being requested by the BCM.
Conditions for Setting the DTC
The BCM detects a short to ground in the liftgate release relay control circuit.
Action Taken When the DTC Sets
The rear closure latch will malfunction.
Conditions for Clearing the DTC
* This 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 (Release) Release Systems Schematics (Release)Release Systems Schematics (Liftgate) Release Systems Schematics (Liftgate)
Connector End View Reference
Component Connector End Views Hybrid/EV Battery Pack X1
Description and Operation
Rear Hatch/Gate Description and Operation Rear Hatch/Gate
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 Programming and Relearning for scan tool information
Circuit/System Verification
Vehicle in Service Mode, command the rear closure latch to UNLATCH with a scan tool. The rear closure latch should release the rear hatch.
Circuit/System Testing
1. Vehicle OFF, disconnect the KR95A liftgate release relay.
2. Test for less than 10 ohm between the ground circuit terminal 48 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Connect a test lamp between the control circuit terminal 44 and the ground circuit terminal 48.
4. Vehicle in Service Mode, command the rear closure latch to UNLATCH with a scan tool, the test lamp should turn ON while commanding the UNLATCH state.
• If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 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 K9 BCM.
5. If all circuits test normal, test or replace the KR95A liftgate release relay.
Component Testing
1. Vehicle OFF, disconnect the KR95A liftgate release relay.
2. Test for 60-200 ohm between terminals 85 and 86.
• If not within the specified range, replace the KR95A liftgate release 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 KR95A liftgate release relay.
4. Install a 3A 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 ohm between terminals 30 and 87.
• If greater than the specified range, replace the KR95A liftgate release 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, programming and setup