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

Instrumentation, Message Center and Warning Chimes

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

Normal Operation

The Instrument Panel Cluster (IPC) receives the key-in-ignition warning status from the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN) communication bus.

The SJB (Smart Junction Box) monitors the door ajar input from the LH front door and the key-in-ignition switch status. When the SJB (Smart Junction Box) detects a key-in-ignition voltage and the LH front door is open or ajar, the SJB (Smart Junction Box) sends the IPC (Instrument Panel Cluster) 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 in the SJB (Smart Junction Box) if the SJB (Smart Junction Box) detects an open on the key-in-ignition switch input circuit or if the SJB (Smart Junction Box) 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 (Smart Junction Box)

- IPC (Instrument Panel Cluster)

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

AK1 CHECK THE SAFETY BELT WARNING CHIME OPERATION

- Ignition OFF.

- Ignition ON.

- Monitor the safety belt warning chime when the ignition is transitioned from OFF to RUN for 6 seconds.

Does the safety belt warning chime operate for approximately 6 seconds?

Yes
GO to AK2.

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

AK2 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 IPC (Instrument Panel Cluster) message center or the integrated display.

Does the door ajar warning indicator operate correctly?

Yes
GO to AK3.

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

AK3 RETRIEVE THE RECORDED DTCs FROM THE SJB (Smart Junction Box) SELF-TEST

- Check for recorded DTCs from the SJB (Smart Junction Box) self-test.

Is DTC B1352 present?

Yes
GO to AK4.

No
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.

AK4 CHECK THE IGNITION SWITCH

- Ignition OFF.

- 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. CLEAR the DTCs. REPEAT the self-test.