Pinpoint Tests AV: The Key-In-Ignition Warning Chime Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test AV: 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 Panel Cluster (IPC) receives the key-in-ignition warning status from the Body Control Module (BCM) over the High Speed Controller Area Network (HS-CAN). The key-in-ignition warning switch (part of the ignition switch) is hardwired to the BCM. When the key is inserted into the ignition lock cylinder, the key-in-ignition switch closes and supplies voltage to the BCM. The BCM 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 BCM sends the IPC a chime request message to sound the key-in-ignition warning chime.
- DTC B10F1:14 (Key In Switch: Circuit Short To Ground or Open) - a continuous and on-demand DTC that sets if the BCM detects an open on the key-in-ignition switch input circuit or if the BCM detects ignition START, RUN/START or RUN/ACC inputs without the key-in-ignition input.
This pinpoint test is intended to diagnose the following:
- Interior lighting concern
- Wiring, terminals or connectors
- Key-in-ignition warning switch (part of the ignition switch)
- BCM
- IPC
PINPOINT TEST AV: THE KEY-IN-IGNITION WARNING CHIME IS INOPERATIVE
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AV1 CHECK THE SAFETY BELT WARNING CHIME OPERATION
- Ignition OFF.
- Unbuckle the driver safety belt.
- 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 AV2.
No
INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) Instrument Panel Cluster (IPC). TEST the system for normal operation.
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AV2 CHECK THE INTERIOR LAMPS OPERATION
- Open and close the driver door.
- Observe the interior lamps.
- Do the interior lamps operate correctly from the driver door?
Yes
GO to AV3.
No
REFER to Interior Lighting Testing and Inspection.
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AV3 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST
- Check the recorded DTCs from the BCM self-test.
- Is DTC B10F1:14 present?
Yes
GO to AV4.
No
GO to AV6.
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AV4 CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Insert the key into the ignition cylinder.
- Disconnect: BCM C2280b.
- Measure the voltage between the BCM C2280b-35, circuit CDC30 (BU/GY), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to AV6.
No
GO to AV5.
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AV5 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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AV6 CHECK FOR CORRECT BCM OPERATION
- Disconnect all the BCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the BCM 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 BCM. 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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