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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1373 (Exterior Lighting System) >> Diagnostic Tests >> STOPLAMP >> Pinpoint Tests >> Pinpoint Test K: The Stoplamp Are On Continuously >> Pinpoint Test K: The STOPLAMP Are On Continuously

Pinpoint Test K: The STOPLAMP Are On Continuously

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. K1 DETERMINE IF ALL THE STOPLAMP ARE ILLUMINATED 
    • Key in OFF position.
    • Observe the stoplamp with the brake pedal released.
    • Are all of the stoplamp illuminated? 
    1. YES  : Go to  K2.
    2. NO  : Go to  K7.
  2. K2 CHECK THE STOPLAMP SWITCH 
    • Disconnect: Stoplamp Switch C278
    • Do the stoplamp continue to illuminate? 
    1. YES  : Go to  K3.
    2. 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 stoplamp continue to illuminate? 
    1. YES  : Go to  K4.
    2. NO  : Go to  K8.
  4. K4 CHECK CIRCUIT CCB08 (VT/WH) FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280a
    • Do the stoplamp continue to illuminate? 
    1. YES  : For Fusion, go to  K5.

      For Milan or MKZ, go to  K6.

    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  5. K5 CHECK THE SJB 
    • Disconnect: SJB C2280c
    • Do the stoplamp continue to illuminate? 
    1. YES  : Go to  K6.
    2. NO  : Go to  K9.
  6. K6 CHECK CIRCUIT CLS17 (YE/GY) FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280e
    • Does the high mounted stoplamp continue to illuminate? 
    1. YES  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  K9.
  7. K7 CHECK THE STOPLAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280e
    • Do the stoplamp 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  K9.
  8. K8 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 or ELECTRONIC ENGINE CONTROLS - 3.0L (4V) . 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. K9 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 . 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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