LEMON Manuals: Even more car manuals for everyone
Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 639 (Exterior Lighting) >> Diagnosis And Testing >> Reversing Lamps >> Pinpoint Tests >> Pinpoint Test W: The Reversing Lamps Are On Continuously >> Pinpoint Test W: The Reversing Lamps Are On Continuously

Pinpoint Test W: The Reversing Lamps Are On Continuously

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. W1 CHECK THE TRANSAXLE TYPE 
    • Key in OFF position.
    • Check the transaxle type on the vehicle.
    • Is the vehicle equipped with a manual transaxle? 

    Yes  : GO to W2.

    No  : GO to  W3.

  2. W2 CHECK THE REVERSING LAMP SWITCH 
    • Disconnect: Reversing Lamp Switch C169.
    • Key in ON position.
    • Do the reversing lamps continue to illuminate? 

    Yes  : For vehicles equipped with an auto-dimming mirror, GO to  W4.

    For vehicles not equipped with an auto-dimming mirror, GO to  W6.

    No  : INSTALL a new reversing lamp switch. REFER to REVERSING LAMP SWITCH . TEST the system for normal operation.

  3. W3 MONITOR THE TRANSMISSION GEAR STATUS PID 
    • Key in ON position.
    • Enter the following diagnostic mode on the scan tool: TCM Gear Status PID.
    • Monitor the TCM gear status PID while moving the gear selector lever through all positions.
    • Does the PID agree with the gear selected? 

    Yes  : For vehicles equipped with an auto-dimming mirror, GO to W4.

    For vehicles not equipped with an auto-dimming mirror, GO to  W5.

    No  : REFER to AUTOMATIC TRANSMISSION - 6 SPEED or AUTOMATIC TRANSAXLE/TRANSMISSION - FNR5 to continue diagnosis of the transaxle.

  4. W4 CHECK THE REAR VIEW MIRROR 
    • Key in OFF position.
    • Disconnect: Rear View Mirror C911.
    • Key in ON position.
    • Do the reversing lamps continue to illuminate? 

    Yes  : For vehicles equipped with a manual transaxle, GO to  W6.

    For vehicles equipped with an automatic transaxle, GO to W5.

    No  : INSTALL a new rear view mirror. REFER to REAR VIEW MIRRORS . TEST the system for normal operation.

  5. W5 CHECK THE INSTRUMENT CLUSTER 
    • Key in OFF position.
    • Disconnect: Instrument Cluster C220.
    • Key in ON position.
    • Do the reversing lamps continue to illuminate? 

    Yes  : GO to W6.

    No  : GO to  W8.

  6. W6 CHECK CIRCUIT CPB12 (GN/WH) FOR A SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: SJB C2280e.
    • Key in ON position.
    • Do the reversing lamps continue to illuminate? 

    Yes  : REPAIR the circuit. TEST the system for normal operation.

    No  : GO to W7.

  7. W7 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB connectors.
    • Check for:
      • Corrosion
      • 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 CONTROL MODULES . 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.

  8. W8 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 
    • Disconnect the instrument cluster connector.
    • Check for:
      • Corrosion
      • Pushed-out pins
    • Connect the instrument cluster 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 instrument cluster. REFER to INSTRUMENT CLUSTER . 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.

scientia non olet · About LEMON Manuals