Pinpoint Tests AN: 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 AN: 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 Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN) communication bus.
The key-in-ignition warning switch is hardwired to the SJB through circuit CDC30 (BU/GY). When the key is inserted into the ignition lock cylinder, the key-in-ignition switch closes and supplies ground to the SJB.
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 ground 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 warning switch
- SJB
PINPOINT TEST AN: 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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AN1 CHECK THE IPC ILLUMINATION
- Verify the IPC is not illuminated with the headlamp switch off.
- Does the IPC illumination operate correctly?
Yes
GO to AN2.
No
REFER to Instrument Panel, Gauges and Warning Indicators.
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AN2 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 AN3.
No
GO to AN4.
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AN3 CHECK THE SJB IGNITION INPUT PIDs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Select and monitor the SJB PIDs ignition ACC (IGN_A_ECU), ignition OFF (IGN_O_ECU), ignition RUN (IGN_R_ECU), and ignition START (IGN_S_ECU) while cycling the ignition from ACC, OFF, RUN and START.
- Do the SJB PIDs match the ignition mode?
Yes
GO to AN7.
No
REFER to Steering Column to diagnose the ignition outputs to the SJB. Testing and Inspection
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AN4 CHECK THE SJB KEY-IN-IGNITION CIRCUIT FOR SHORT TO GROUND
- Ignition OFF.
- Remove the key from the ignition lock cylinder.
- Disconnect: SJB C2280b.
- Measure the resistance between the SJB C2280c-7, circuit CDC30 (BU/GY), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to AN7.
No
GO to AN5.
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AN5 CHECK CIRCUIT CDC30 (BU/GY) FOR A SHORT TO GROUND
- Disconnect: Clockspring C218b.
- Measure the resistance between the SJB C2280c-7, circuit CDC30 (BU/GY), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to AN6.
No
REPAIR the circuit. TEST the system for normal operation.
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AN6 CHECK THE KEY-IN-IGNITION SWITCH CIRCUIT FOR AN OPEN
- Disconnect: Key-In-Ignition Switch.
- Measure the resistance between the lower clockspring pin 1, component side and ground.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new key-in-ignition switch. CLEAR the DTCs. REPEAT the self-test.
No
REPAIR the circuit for an open. TEST the system for normal operation.
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AN7 CHECK FOR CORRECT SJB OPERATION
- Disconnect the SJB connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the SJB 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 SJB. 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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