Pinpoint Tests AG: The Trunk Ajar Message Is Inoperative/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Test AG: The TRUNK AJAR Message Is Inoperative/Always On

Refer to Wiring Diagram Set 60, Instrument Cluster for schematic and connector information. Diagrams By Number

Normal Operation

When the luggage compartment is open and the ignition switch is in the RUN position, the Lighting Control Module (LCM) sends the Instrument Cluster (IC) a message over the Standard Corporate Protocol (SCP) communication network to illuminate the trunk ajar message.

- DTC B1334 (Decklid Ajar Rear Door Circuit Short to Ground) - an on-demand DTC that sets if the LCM detects a short to ground on circuit 486 (BN/WH).

This pinpoint test is intended to diagnose the following:

- Luggage compartment lamp
- LCM



PINPOINT TEST AG: THE TRUNK AJAR MESSAGE IS INOPERATIVE/ALWAYS ON

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AG1 CHECK THE DOOR AJAR WARNING OPERATION


- Ignition ON.
- Close all the doors.
- Open the driver door while monitoring the message center.
- Does the message center display DOOR AJAR?

Yes
GO to AG2.

No
Go To Pinpoint Test AF. Pinpoint Tests AF: The Door Ajar Warning Is Inoperative

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AG2 RETRIEVE THE RECORDED DTCs FROM THE LCM SELF-TEST


- Retrieve the recorded LCM DTCs from the self-test.
- Is DTC B1334 retrieved?

Yes
REFER to Courtesy Lamp. Courtesy Lamp

No
GO to AG3.

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AG3 CHECK THE OPERATION OF THE LUGGAGE COMPARTMENT LAMP


- Open and close the luggage compartment lid and monitor the luggage compartment lamp.
- Does the luggage compartment lamp operate with the luggage compartment lid open and turn off with the luggage compartment lid closed?

Yes
INSTALL a new LCM. TEST the system for normal operation.

No
REFER to Courtesy Lamp. Courtesy Lamp

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