Pinpoint Test AO: The Key-In-Ignition Warning Chime Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test AO: 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. 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 or short to ground on the key-in-ignition switch input circuit 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
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.
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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 Interior Lighting Testing and Inspection.
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AO2 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST
- Check the recorded DTCs from the SJB self-test.
- Is DTC B1352 present?
Yes
GO to AO3.
No
GO to AO4.
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AO3 CHECK THE IGNITION SWITCH
- Disconnect: Ignition Switch C250 .
- Carry out the ignition switch component test.
Refer to Wiring Diagrams for component testing. Diagrams By Number
- 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. REFER to Steering Column Switches Ignition Switch. CLEAR the DTCs. REPEAT the self-test.
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AO4 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB 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. REFER to Multifunction Electronic Modules Service and Repair. 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.
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