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Pinpoint Test L: The STOPLAMPS Are On Continuously

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. L1 DETERMINE IF ALL STOPLAMPS ARE ILLUMINATED 
    • Observe the operation of the stoplamps with the brake pedal released.
    • Are all of the stoplamps illuminated? 
    1. YES  : Go to  L2.
    2. NO  : Go to  L6.
  2. L2 CHECK THE STOPLAMP SWITCH 
    • Key in OFF position.
    • Disconnect: Stoplamp Switch C278
    • Do the stoplamps continue to illuminate? 
    1. YES  : Go to  L3.
    2. NO  : INSTALL a new stoplamp switch. REFER to Stoplamp Switch . CLEAR the DTCs. REPEAT the self-test.
  3. L3 CHECK THE PCM 
    • Disconnect: PCM C175b
    • Do the stoplamps continue to illuminate? 
    1. YES  : For Escape or Mariner, go to  L4 .

      For Hybrid, go to  L6 .

    2. NO  : Go to  L7.
  4. L4 CHECK THE ABS MODULE 
    • Disconnect: ABS Module C155
    • Do the stoplamps continue to illuminate? 
    1. YES  : For Escape or Mariner equipped with speed control, go to  L5 .

      For Escape or Mariner not equipped with speed control, or Hybrid, go to  L6 .

    2. NO  : Go to  L8.
  5. L5 CHECK THE SPEED CONTROL ACTUATOR 
    • Disconnect: Speed Control Actuator C122
    • Do the stoplamps continue to illuminate? 
    1. YES  : Go to  L6.
    2. NO  : Go to  L9.
  6. L6 CHECK THE SJB 
    • Disconnect: SJB C2280c
    • Do the stoplamps continue to illuminate? 
    1. YES  : If the high mounted stoplamp continues to illuminate, REPAIR circuit 511 (LG). CLEAR the DTCs. REPEAT the self-test.

      If the LH rear lamp continues to illuminate, REPAIR circuit 22 (LB/BK) (Escape, Mariner) or circuit 1728 (LB/OG) (Hybrid). CLEAR the DTCs. REPEAT the self-test.

      If the RH rear lamp continues to illuminate, REPAIR circuit 810 (RD/LG). CLEAR the DTCs. REPEAT the self-test.

    2. NO  : Go to  L10.
  7. L7 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 - 2.3L article or ELECTRONIC ENGINE CONTROLS - 3.0L (4V) article. CLEAR the DTCs. REPEAT the self-test.
    2. 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.
  8. L8 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect the ABS module connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the ABS module connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new ABS module. REFER to VEHICLE DYNAMIC SYSTEMS article. CLEAR the DTCs. REPEAT the self-test.
    2. 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. L9 CHECK FOR CORRECT SPEED CONTROL ACTUATOR OPERATION 
    • Disconnect the speed control actuator connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the speed control actuator connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new speed control actuator. REFER to SPEED CONTROL article. CLEAR the DTCs. REPEAT the self-test.
    2. 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.
  10. L10 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. CLEAR the DTCs. REPEAT the self-test.
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