Pinpoint Tests AA: The Door/Hood Ajar Warning Indicator Is Never/Always On
Instrumentation, Message Center and Warning Chimes
Pinpoint Test AA: The Door/Hood Ajar Warning Indicator Is Never/Always On (Fusion/Milan Non-Hybrid)
Normal Operation
The Instrument Panel Cluster (IPC) receives the door/hood ajar status for the LH front door, RH front door, LH rear door, the RH rear door and hood from the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN) communication bus. When the IPC receives a message from the SJB that the hood or one or more doors is open or ajar, the IPC turns on the door/hood ajar warning indicator.
If the door/hood ajar status message is missing for less than 5 seconds, the door/hood ajar warning indicator remains in the last indication mode (on or off) based upon the last known good message received. If the door/hood ajar status message is missing for more than 5 seconds, the IPC sets DTC U0140:00 and defaults the door/hood ajar warning indicator on.
NOTE: If DTC U0140:00 is set in the SJB, other symptoms may also be present in the IPC such as high beam indicator, RH/LH turn indicators, instrument panel backlighting and Tire Pressure Monitoring System (TPMS).
This pinpoint test is intended to diagnose the following:
- Interior lighting concern
- SJB
- IPC
PINPOINT TEST AA: THE DOOR/HOOD AJAR WARNING INDICATOR IS NEVER/ALWAYS ON (FUSION/MILAN NON-HYBRID)
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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AA1 CHECK THE INTERIOR LIGHTING OPERATION
- Open and close each door while monitoring the courtesy lamps.
- Do the courtesy lamps operate correctly with each door?
Yes
GO to AA2.
No
REFER to Interior Lighting Testing and Inspection.
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AA2 CHECK THE HOOD AJAR SWITCH STATUS PID
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger .
- Select the SJB hood ajar switch PID (HOOD_SW). Monitor the PID with the hood closed and open.
- Does the PID agree with the status of the hood?
Yes
GO to AA3
No
REFER to Anti-Theft - Perimeter Testing and Inspection to diagnose the hood ajar switch circuit.
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AA3 CARRY OUT THE IPC DOOR/HOOD AJAR WARNING INDICATOR ACTIVE COMMAND USING THE SCAN TOOL
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IPC DataLogger .
- Select the IPC door ajar warning indicator (DOOR_AJAR) active command. Command the door ajar warning indicator on and off while observing the door ajar warning indicator.
- Does the door ajar warning indicator illuminate when commanded on, and turn off when commanded off?
Yes
GO to AA4.
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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AA4 RETRIEVE THE RECORDED DTCs FROM THE CONTINUOUS IPC SELF-TEST
- Check for recorded IPC DTCs from the continuous self-test.
- Is DTC U0140:00 recorded?
Yes
GO to Pinpoint Test BM. Pinpoint Tests BM: DTC U0140:00
No
GO to AA5.
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AA5 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST
- Check for recorded DTCs from the SJB self-test.
- Are any SJB DTCs recorded?
Yes
REFER to the Diagnostic Trouble Code (DTC) Chart in Multifunction Electronic Modules Testing and Inspection.
No
INSTALL a new SJB. REFER to Multifunction Electronic Modules Service and Repair. TEST the system for normal operation.
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