Pinpoint Tests AK: The Headlamps On Warning Chime Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AK: The Headlamps On Warning Chime Is Inoperative

Normal Operation

When the key is inserted into the ignition lock cylinder, the key-in-ignition switch (part of the ignition switch) closes and routes a voltage signal to the Instrument Cluster (IC) through circuit 1414 (LG/VT). When the ignition key is not inserted into the ignition lock cylinder, the driver door is ajar and the headlamps are on, the Smart Junction Box (SJB) sends a message to the IC over the Medium Speed Controller Area Network (MS-CAN). The IC interprets this signal and sounds the headlamps on warning chime.

This pinpoint test is intended to diagnose the following:

- SJB



PINPOINT TEST AK: THE HEADLAMPS ON WARNING CHIME IS INOPERATIVE

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AK1 CHECK THE EXTERIOR LIGHTING


- Check the operation of the exterior lighting.
- Does the exterior lighting operate correctly?

Yes
GO to AK2.

No
REFER to Lighting and Horns. Lighting and Horns

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AK2 CHECK THE IC CHIME FUNCTION


- Ignition OFF.
- Place the key in the ignition lock cylinder.
- Open the driver door.
- Does the key-in-ignition warning chime sound?

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

No
Go To Pinpoint Test AJ. Pinpoint Tests AJ: The Key-In-Ignition Chime Is Inoperative

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