Pinpoint Tests AM: The Chime Sounds When The Driver Door Is Ajar (No Key In Ignition And Headlamps Off)
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test AM: The Chime Sounds When The Driver Door Is Ajar (No Key In Ignition And Headlamps Off)
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 LH front door is open or ajar, the BCM sends the IPC a chime request message to sound the key-in-ignition warning chime. The headlamps on warning chime sounds when the driver door is opened with the ignition off, and the headlamp switch is in the PARK or HEADLAMP ON position.
The BCM receives the headlamp switch status from the headlamp switch and the LH front door ajar status from the LH front door ajar switch through hardwired circuitry. The BCM communicates the headlamp on chime request to the IPC when the headlamps or parking lamps are on and the driver door is opened. The autolamps feature must not be selected for the headlamps on warning chime to operate.
- 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:
- Exterior lighting concern
- Interior lighting concern
- Wiring, terminals or connectors
- Key-in-ignition warning switch (part of the ignition switch)
- BCM
PINPOINT TEST AM: THE CHIME SOUNDS WHEN THE DRIVER DOOR IS AJAR (NO KEY IN IGNITION AND HEADLAMPS OFF)
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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AM1 CHECK THE EXTERIOR LIGHTING OPERATION
- Turn the headlamp switch to the OFF position.
- Close all doors and wait one minute.
- Wait one minute.
- Observe the exterior lights.
- Are the headlamps and parking lamps off?
Yes
GO to AM2.
No
REFER to Exterior Lighting Testing and Inspection and Testing and Inspection.
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AM2 CHECK THE INTERIOR LAMPS OPERATION
- Open and close the drivers door.
- Observe the interior lamps.
- Do the interior lamps operate correctly from the driver door?
Yes
GO to AM3.
No
REFER to Interior Lighting Testing and Inspection.
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AM3 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST
- Check the recorded DTCs from the BCM self-tests.
- Are any DTCs present?
Yes
For DTC B10F1:14, GO to AM4. For all other DTCs, REFER to Multifunction Electronic Modules Multifunction Electronic Modules.
No
GO to AM5.
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AM4 CHECK THE BCM INPUT PIDs FROM THE IGNITION SWITCH
- Enter the following diagnostic mode on the scan tool: BCM DataLogger.
- Select and monitor the BCM ignition switch state (IGN_SW_STATE) while switching through the ignition states.
- Do the BCM PIDs match the ignition switch position?
Yes
GO to AM8.
No
REFER to Steering Column Switches Testing and Inspection to diagnose the ignition switch outputs to the BCM.
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AM5 CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Remove the key from the ignition cylinder.
- Disconnect: BCM C2280B.
- Measure the voltage between the BCM C2280B-34, circuit CDC30 (BU/GY), harness side and ground.
- Is any voltage present?
Yes
GO to AM6.
No
GO to AM8.
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AM6 CHECK KEY-IN-IGNITION INPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Without disconnecting the electrical connector, remove the ignition switch from the steering column. Refer to Steering Column Switches Ignition Switch.
- Measure the voltage between the BCM C2280B-34, circuit CDC30 (BU/GY), harness side and ground.
- Is any voltage present?
Yes
GO to AM7.
No
INSTALL a new ignition lock cylinder. TEST the system for normal operation.
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AM7 CHECK KEY-IN-IGNITION INPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Disconnect: Ignition Switch C250.
- Measure the voltage between the BCM C2280B-34, circuit CDC30 (BU/GY), harness side and ground.
- Is any voltage present?
Yes
REPAIR circuit CDC30 (BU/GY) for a short to voltage. TEST the system for normal operation.
No
INSTALL a new ignition switch. REFER to Steering Column Switches Ignition Switch. TEST the system for normal operation.
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AM8 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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