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

Instrumentation, Message Center and Warning Chimes

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

Refer to Wiring Diagram 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). 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 key is inserted into the ignition lock cylinder and the driver 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 if the SJB (Smart Junction Box) detects an open or short to ground 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)

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

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

AO1 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 AO2.

No
REFER to Lighting and Horns.

AO2 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 AO3.

No
GO to AO4.

AO3 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 or short to ground. CLEAR the DTCs. REPEAT the self-test.

No
INSTALL a new ignition switch. CLEAR the DTCs. REPEAT the self-test.

AO4 CHECK FOR CORRECT SJB (Smart Junction Box) OPERATION

- Disconnect all the SJB (Smart Junction Box) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the SJB (Smart Junction Box) connectors and make sure they seat correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.