Pinpoint Tests AF: The Key-In-Ignition Warning Chime Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test AF: 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 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
- IC
PINPOINT TEST AF: THE KEY-IN-IGNITION WARNING CHIME IS INOPERATIVE
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AF1 CHECK THE SAFETY BELT WARNING CHIME OPERATION
- Ignition OFF.
- Ignition ON.
- Monitor the safety belt warning chime when the ignition switch is transitioned from OFF to RUN for 6 seconds.
- Does the safety belt warning chime operate for approximately 6 seconds?
Yes
GO to AF2.
No
GO to AF8.
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AF2 CHECK THE DOOR AJAR WARNING INDICATOR OPERATION
- Open then close the LH front door while observing the door ajar warning indicator in the IC message center or the integrated display.
- Does the door ajar warning indicator operate correctly?
Yes
GO to AF3.
No
GO to Pinpoint Test X. Pinpoint Test X: The Door Ajar Warning Indicator Is Never/Always On
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AF3 RETRIEVE THE RECORDED DTCs FROM THE CONTINUOUS AND ON-DEMAND SJB SELF-TESTS
- Check the recorded DTCs from the SJB self-tests.
- Is DTC B1352 present?
Yes
GO to AF5.
No
GO to AF4.
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AF4 CARRY OUT THE KEY-IN-IGNITION WARNING CHIME ACTIVE COMMAND USING THE SCAN TOOL
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC key-in-ignition warning chime (CHIME_KEY) active command. Command the key-in-ignition warning chime on.
- Does the key-in-ignition warning chime sound?
Yes
GO to AF7.
No
GO to AF8.
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AF5 CHECK THE KEY-IN-IGNITION SWITCH INPUT CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Insert the key into the ignition cylinder.
- Disconnect: SJB C2280b.
- Measure the voltage between the SJB C2280b-35, circuit CDC30 (BU/GY), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to AF7.
No
GO to AF6.
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AF6 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 Switches Ignition Switch. CLEAR the DTCs. REPEAT the self-test.
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AF7 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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AF8 CHECK FOR CORRECT IC OPERATION
- Disconnect the IC connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the IC connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). 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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