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 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), 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 LH front door is open or ajar, the SJB sends the IC 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 switch in the OFF position, the key is not in the ignition lock cylinder, and the headlamp switch is in the PARKING LAMPS or HEADLAMP ON position.
The SJB 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 headlamps on warning chime sounds when the LH front door is opened with the ignition switch in the OFF position, the key is not in the ignition lock cylinder, and the headlamp switch is in the PARKING LAMPS or HEADLAMP ON position. The SJB communicates the headlamp on chime request to the IC 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 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 warning switch (part of the ignition switch)
- Steering column lock module
- SJB
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 IC ILLUMINATION
- Verify the parking lamps or headlamps are not illuminated with the headlamp switch off.
- Do the parking lamps and headlamps operate correctly?
Yes
GO to AM2.
No
REFER to Exterior Lighting Testing and Inspection and Testing and Inspection.
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AM2 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST
- Check for recorded DTCs from the SJB self-test.
- Are any DTCs present?
Yes
For DTC B1352, GO to AM3.
For all other DTCs, REFER to Multifunction Electronic Modules Testing and Inspection.
No
GO to AM4.
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AM3 CHECK THE SJB INPUT PIDs FROM THE IGNITION SWITCH
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Select and monitor the SJB 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
GO to AM7.
No
REFER to Steering Column Switches Testing and Inspection to diagnose the ignition switch outputs to the SJB.
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AM4 CHECK THE KEY-IN-IGNITION SWITCH INPUT CIRCUIT FOR VOLTAGE
- Remove the key from the ignition lock cylinder.
- Ignition OFF.
- Disconnect: SJB C2280B.
- Measure the voltage between the SJB C2280B-35, circuit CDC30 (BU/GY), harness side and ground.
- Is any voltage present?
Yes
GO to AM5.
No
GO to AM7.
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AM5 CHECK THE KEY-IN-IGNITION SWITCH INPUT CIRCUIT 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 circuit CDC30 (BU/GY) for a short to voltage. TEST the system for normal operation.
No
GO to AM6.
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AM6 CHECK THE IGNITION SWITCH FOR CORRECT OPERATION
- Remove the ignition switch. Refer to Steering Column Switches Ignition Switch.
- NOTE: The key-in-ignition switch actuator must be operated manually with the ignition switch removed to accurately test the key-in-ignition function of the ignition switch.
- Carry out the ignition switch component test.
- Does the ignition switch pass the component test?
Yes
INSTALL a new steering column lock module. REFER to Steering Column Switches Steering Column Lock Module. 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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AM7 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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