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

Instrumentation, Message Center and Warning Chimes

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

Refer to Wiring Diagrams Set 60, Instrument Cluster for schematic and connector information. Electrical Diagrams

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) communication bus.

The key-in-ignition warning switch (part of the ignition switch) is hardwired to the SJB (Smart Junction Box). When the key is inserted into the ignition lock cylinder, the key-in-ignition switch closes and supplies voltage to the SJB (Smart Junction Box).

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 IC (Instrument 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)

- IC (Instrument Cluster)

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

AH1 CARRY OUT THE CHIME FUNCTION ACTIVE COMMAND

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: IC (Instrument Cluster) DataLogger.

- Select the IC (Instrument Cluster) chime command (CHIME_KEY).

Does the chime operate?

Yes
GO to AH2.

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

AH2 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 (Instrument Cluster).

Does the door ajar warning indicator operate correctly?

Yes
GO to AH3.

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

AH3 RETRIEVE THE RECORDED DTCs FROM THE SJB (Smart Junction Box) SELF-TEST

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

Is DTC B1352 present?

Yes
GO to AH4.

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

AH4 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.