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

Instrumentation, Message Center and Warning Chimes

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

Refer to Wiring Diagram Set 60, Instrument Cluster 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 through circuit CDC30 (BU/GY). 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 CDC30 (BU/GY) 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 AI: THE KEY-IN-IGNITION WARNING CHIME IS INOPERATIVE

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