Pinpoint Tests AL: The Key-In-Ignition Warning Chime Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AL: The Key-In-Ignition Warning Chime Is Inoperative

Refer to Wiring Diagram Set 13, Power Distribution/SJB for schematic and connector information. Diagrams By Number

Normal Operation

The Instrument Cluster (IC) receives the key-in-ignition warning status from the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN). The key-in-ignition warning switch (part of the ignition switch) is hardwired to the SJB. When the key is inserted into the ignition lock cylinder, the key-in-ignition switch closes and supplies voltage to the SJB. The SJB monitors the door ajar input from the LH front door and the key-in-ignition switch status. When the key is inserted into the ignition lock cylinder and the driver door is open or ajar, the SJB sends the IC a chime request message to sound the key-in-ignition warning chime.

- DTC B1352 (Ignition Key-In Circuit Failure) - an on-demand DTC that sets if the SJB detects an open on the key-in-ignition switch input circuit or if the SJB detects ignition START, RUN/START or RUN/ACC inputs without the key-in-ignition input.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Key-in-ignition switch (part of the ignition switch)
- SJB
- IC



PINPOINT TEST AL: THE KEY-IN-IGNITION WARNING CHIME IS INOPERATIVE

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AL1 CHECK THE SAFETY BELT WARNING CHIME OPERATION


- Ignition OFF.
- Ignition ON.
- Monitor the safety belt warning chime when the ignition switch is transitioned from OFF to RUN for 6 seconds.
- Does the safety belt warning chime operate for approximately 6 seconds?

Yes
GO to AL2.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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AL2 CHECK THE INTERIOR LIGHTS OPERATION


- Ignition OFF.
- Open then close the driver door while observing the interior lights.
- Do the interior lights operate correctly?

Yes
GO to AL3.

No
REFER to Lighting and Horns.

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AL3 CHECK THE DOOR AJAR WARNING INDICATOR OPERATION


- Ignition ON.
- Open then close the LH front door while observing the door ajar warning indicator in the IC message center or the integrated display.
- Does the door ajar warning indicator operate correctly?

Yes
GO to AL4.

No
GO to Pinpoint Test AA. Pinpoint Tests AA: The Door Ajar Warning Indicator Is Never/Always On

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AL4 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST


- Check the recorded DTCs from the SJB self-test.
- Is DTC B1352 present?

Yes
GO to AL5.

No
INSTALL a new SJB. REFER to Body Control Systems. TEST the system for normal operation.

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AL5 CHECK THE IGNITION SWITCH


- Disconnect: Ignition Switch C250.
- Carry out the ignition switch component test.

- Is the ignition switch OK?

Yes
REPAIR circuit CDC30 (BU/GY) for an open. CLEAR the DTCs. REPEAT the self-test.

No
INSTALL a new ignition switch. REFER to Steering Column. CLEAR the DTCs. REPEAT the self-test.

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