Pinpoint Tests AR: The Door/hood Ajar Message Center Warning Indicator Is Never/Always On
Instrumentation, Message Center and Warning Chimes
Pinpoint Test AR: The Door/hood Ajar Message Center Warning Indicator Is Never/Always On
Normal Operation
The Instrument Panel Cluster (IPC) receives the door ajar status for the LH front door, RH front door, LH rear door, the RH rear door, the hood and the decklid (non-hybrid only) ajar switch status 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 one or more doors, the hood or the decklid (non-hybrid only) are open or ajar, the IPC turns on the door/hood ajar message center warning indicator.
If the door/hood ajar status message is missing for less than 5 seconds, the door/hood ajar message center warning indicator remains in the last state (on or off) based upon the last known good message received for each of the door ajar states. If the door/hood ajar status message is missing for greater than 5 seconds, the IPC sets DTC U0140:00 and defaults the door/hood ajar message center 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 AR: THE DOOR/HOOD AJAR MESSAGE CENTER WARNING INDICATOR IS NEVER/ALWAYS ON
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AR1 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 AR2.
No
REFER to Interior Lighting Testing and Inspection.
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AR2 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 AR3.
No
REFER to Anti-Theft - Perimeter Testing and Inspection to diagnose the hood ajar switch circuit.
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AR3 CHECK THE MESSAGE CENTER OPERATION
- Ignition OFF.
- Disconnect: PCM C175b .
- Ignition ON.
- Monitor the message center display area with the PCM disconnected.
- Does the message center display the powertrain malfunction (wrench) message center warning indicator?
Yes
GO to AR4.
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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AR4 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 AR5.
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AR5 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 Multifunction Electronic Modules Testing and Inspection for correct navigation of the DTC.
No
INSTALL a new SJB. REFER to Multifunction Electronic Modules Service and Repair. TEST the system for normal operation.
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