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• | Perform the prior to Diagnostic System Check - Vehicle 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Boot Relay B+ | 1 | 1 | -- | -- |
Rear Compartment Lid Exterior Unlatch Switch Signal | 2 | 2 | 2 | -- |
Rear Compartment Lid Unlatch Actuator Control | 1 | 1 | 1 | -- |
Boot Release Relay Control | B3265 02 | B3265 01, B3265 04 | B3265 01 | - |
Rear Compartment Lid Unlatch Actuator Ground | -- | 1 | 1 | -- |
Rear Compartment Lid Exterior Unlatch Switch Ground | -- | 2 | 2 | -- |
Boot Relay Ground | -- | 1 | 1 | -- |
1. Rear Compartment Lid Unlatch Malfunction 2. Rear Compartment Lid Unlatch Exterior Switch Malfunction |
The body control module (BCM) applies battery positive voltage to the boot release relay control circuit, which energises the coil side of the rear compartment lid release relay. The switch side of the rear compartment lid release relay then closes, supplying battery positive voltage through the relay and the latch motor voltage control circuit to the rear compartment lid latch. The rear compartment lid latch then releases the rear compartment lid so that it may be manually raised to an open position.
Battery voltage must be between 9-16 V.
The BCM detects a short to ground on the boot release relay control circuit.
The rear compartment latch will not operate.
• | 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. |
Luggage Compartment Description and Operation
Control Module References for scan tool information
Ignition ON, command the Boot Lid Uncatch with a scan tool. The rear compartment lid actuator should unlatch the boot lid.
⇒ | If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control Module. |
⇒ | If the test lamp does not illuminate, test the ground circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the KR95B Rear Compartment Lid Release Relay. |
⇒ | If the test lamp does not illuminate, test the B+ circuit for an open/high resistance. |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
⇒ | If the M41 Rear Compartment Lid Unlatch Actuator does not activate, test the control circuit for an open/high resistance. If the circuit tests normal, test or replace the M41 Rear Compartment Lid Unlatch Actuator. |
⇒ | If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K9 Body Control Module. |
⇒ | If the resistance is not within the specified range, replace the KR95B Rear Compartment Lid Release Relay. |
• | 3 and 1 |
• | 3 and 2 |
• | 3 and 5 |
⇒ | If not the specified value, replace the KR95B Rear Compartment Lid Release Relay. |
⇒ | If greater than the specified range, replace the KR95B Rear Compartment Lid Release Relay. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Relay Replacement : Attached to Wire Harness |
• | Control Module References for BCM replacement, setup and programming |
© Copyright Chevrolet. All rights reserved |
© Copyright Chevrolet. All rights reserved |