Pinpoint Tests AE: 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 AE: 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 Cluster (IC) 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 (part of the ignition 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 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 SJB detects a key-in-ignition voltage and the LH front 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 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 (part of the ignition switch)
- SJB
PINPOINT TEST AE: 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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AE1 CHECK THE IC ILLUMINATION
- Verify the IC is not illuminated with the headlamp switch off.
- Does the IC illumination operate correctly?
Yes
GO to AE2.
No
REFER to Instrument Panel, Gauges and Warning Indicators.
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AE2 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 AE3.
No
GO to AE4.
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AE3 CHECK THE SJB INPUT PIDs FROM THE IGNITION SWITCH
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Select and monitor the SJB PIDs ignition switch ACC (IGN_A_ECU), ignition switch OFF (IGN_O_ECU), ignition switch RUN (IGN_R_ECU), and ignition switch START (IGN_S_ECU) while cycling the ignition switch from ACC, OFF, RUN and START.
- Do the SJB PIDs match the ignition switch position?
Yes
INSTALL a new SJB. TEST the system for normal operation.
No
REFER to Steering Column to diagnose the ignition switch outputs to the SJB. Testing and Inspection
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AE4 CHECK CIRCUIT CDC30 (BU/GY) FOR VOLTAGE
- Ignition OFF.
- Remove the key from the ignition lock cylinder.
- Disconnect: SJB C2280B.
- Measure the voltage between the SJBC2280B-35, circuit CDC30 (BU/GY), harness side and ground.
- Is any voltage present?
Yes
GO to AE5.
No
INSTALL a new SJB. TEST the system for normal operation.
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AE5 CHECK CIRCUIT CDC30 (BU/GY) FOR A SHORT TO VOLTAGE
- Disconnect: Ignition Switch C250.
- Measure the voltage between the SJB C2280B-35, circuit CDC30 (BU/GY), harness side and ground.
- Is any voltage present?
Yes
REPAIR the circuit. TEST the system for normal operation.
No
INSTALL a new ignition switch. TEST the system for normal operation.
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