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Pinpoint Test K: The STOPLAMPS 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. K1 DETERMINE IF ALL THE STOPLAMPS ARE ILLUMINATED 
    • Key in OFF position.
    • Observe the stoplamps with the brake pedal released.
    • Are all of the stoplamps illuminated? 

    Yes  : GO to K2.

    No  : GO to  K6.

  2. K2 CHECK THE STOPLAMP SWITCH 
    • Disconnect: Stoplamp Switch C278.
    • Do the stoplamps continue to illuminate? 

    Yes  : GO to K3.

    No  : INSTALL a new stoplamp switch. REFER to STOPLAMP SWITCH . CLEAR the DTCs. REPEAT the self-test.

  3. K3 CHECK THE PCM 
    • Disconnect: PCM C175b.
    • Do the stoplamps continue to illuminate? 

    Yes  : GO to K4.

    No  : GO to  K8.

  4. K4 CHECK CIRCUIT CCB08 (VT/WH) FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280a.
    • Do the stoplamps continue to illuminate? 

    Yes  : For Fusion, GO to K5.

    For Milan or Zephyr, GO to  K7.

    No  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

  5. K5 CHECK THE SJB 
    • Disconnect: SJB C2280c.
    • Do the stoplamps continue to illuminate? 

    Yes  : GO to K6.

    No  : GO to  K9.

  6. K6 CHECK THE STOPLAMPS VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280e.
    • Do the stoplamps continue to illuminate? 

    Yes  : If the high mounted stoplamp continues to illuminate, REPAIR circuit CLS17 (YE/GY). CLEAR the DTCs. REPEAT the self-test.

    If the LH rear lamp continues to illuminate, REPAIR circuit CLS18 (GY/BN). CLEAR the DTCs. REPEAT the self-test.

    If the RH rear lamp continues to illuminate, REPAIR circuit CLS19 (VT/OG). CLEAR the DTCs. REPEAT the self-test.

    No  : GO to  K9.

  7. K7 CHECK CIRCUIT CLS17 (YE/GY) FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280e.
    • Do the stoplamps continue to illuminate? 

    Yes  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

    No  : GO to  K9.

  8. K8 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect all the PCM connectors.
    • Check for:
      • Corrosion
      • Pushed-out pins
    • Connect all the PCM 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 PCM. REFER to ELECTRONIC ENGINE CONTROLS - 2.3L or ELECTRONIC ENGINE CONTROLS - 3.0L (4V) . CLEAR the DTCs. REPEAT the self-test.

    No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

  9. K9 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. CLEAR the DTCs. REPEAT the self-test.

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