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Pinpoint Test J: The STOPLAMPS Are On Continuously

WARNING: This page is about a different car, the 2009 Mercury Sable, 2009 Ford Taurus X, and 2009 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
  1. J1 USE THE RECORDED DTCs FROM THE SJB SELF-TEST 
    • Check the recorded results from the SJB on-demand self-test.
    • Is DTC B1485 present? 
    1. YES  : Go to  J2.
    2. NO  : Go to  J5.
  2. J2 CHECK THE STOPLAMP SWITCH 
    • Disconnect: Stoplamp Switch C278
    • Do the stoplamps continue to illuminate? 
    1. YES  : Go to  J3.
    2. NO  : INSTALL a new stoplamp switch. REFER to Stoplamp Switch . CLEAR the DTCs. REPEAT the self-test.
  3. J3 CHECK THE PCM 
    • Disconnect: PCM C175b
    • Do the stoplamps continue to illuminate? 
    1. YES  : Go to  J4.
    2. NO  : Go to  J6.
  4. J4 CHECK CIRCUIT CCB08 (VT/WH) FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280b
    • Does the high mounted stoplamp continue to illuminate? 
    1. YES  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  J7.
  5. J5 CHECK THE STOPLAMPS VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280d
    • Do the rear stoplamps continue to illuminate? 
    1. YES  : If the LH rear lamp continues to illuminate, REPAIR circuit CLS18 (GY/BN) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.

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

    2. NO  : Go to  J7.
  6. J6 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect all the PCM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • 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? 
    1. YES  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS article. TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
  7. J7 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? 
    1. YES  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
    2. 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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