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
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 monitors the door ajar input from the LH front door and the key-in-ignition switch status. When the SJB detects a key-in-ignition voltage and the LH front door is open or ajar, the SJB sends the IPC 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 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
- IPC
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 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 IPC. REFER to Instrument Panel Cluster (IPC) Service and Repair. TEST the system for normal operation.
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AL2 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 message center or the integrated display.
- Does the door ajar warning indicator operate correctly?
Yes
GO to AL3.
No
GO to Pinpoint Test T. Pinpoint Test T: The Door Ajar Warning Indicator Is Never/Always On
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AL3 CARRY OUT THE CHIME FUNCTION ACTIVE COMMAND
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IPC DataLogger.
- Select the IPC chime command (SOUNDER_OUT).
- Scroll through the chimes to select Key-In-Ign chime.
- Does the key-in-ignition chime operate?
Yes
GO to AL4.
No
INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) Service and Repair. TEST the system for normal operation.
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AL4 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST
- Check for 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
- 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. REFER to Steering Column. CLEAR the DTCs. REPEAT the self-test.
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