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Home >> Ford >> 2005 >> Focus ZX5 S, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Exterior Lighting System >> Diagnosis And Testing >> Stoplamps >> Pinpoint Tests >> Pinpoint Test I: The STOPLAMPS Are On Continuously

Pinpoint Test I: The STOPLAMPS Are On Continuously

  1. I1 DETERMINE THE CONDITION 
    • Key in ON position.
    • Are all the stoplamps on continuously? 
    • Yes  : GO to  I2.
    • No  : GO to  I5.
  2. I2 CHECK THE STOPLAMP SWITCH 
    • Key in OFF position.
    • Disconnect: Stoplamp Switch C2314.
    • Key in ON position.
    • Do the stoplamps continue to illuminate? 
    • Yes  : GO to  I3.
    • No  : INSTALL a new stoplamp switch. REFER to STOPLAMP SWITCH . TEST the system for normal operation.
  3. I3 CHECK THE PCM 
    • Key in OFF position.
    • Disconnect: PCM.
    • Key in ON position.
    • Do the stoplamps continue to illuminate? 
    • Yes  : GO to  I4.
    • No  : GO to  I7.
  4. I4 CHECK THE SPEED CONTROL MODULE 
    • Key in OFF position.
    • Disconnect: Speed Control Module.
    • Key in ON position.
    • Do the stoplamps continue to illuminate? 
    • Yes  : REPAIR the stoplamp switch output circuit. TEST the system for normal operation.
    • No  : GO to  I8.
  5. I5 ISOLATE THE SHORT TO THE POWER CIRCUIT 
    • Key in OFF position.
    • Disconnect: GEM C201a.
    • Disconnect: GEM C201b.
    • Key in ON position.
    • Do the stoplamps continue to illuminate? 
    • Yes  : REPAIR circuit 49S-LG12 (BU) (LH rear lamp) or 49S-LG19 (BU/RD) (RH rear lamp). TEST the system for normal operation.
    • No  : GO to  I6.
  6. I6 CHECK FOR CORRECT GEM OPERATION 
    • Disconnect the GEM connectors.
    • Check for:
      • Corrosion
      • Pushed-out pins
    • Connect the GEM 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 GEM. REFER to MULTIFUNCTION ELECTRONIC 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. TEST the system for normal operation.
  7. I7 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect the PCM connectors.
    • Check for:
      • Corrosion
      • Pushed-out pins
    • Connect 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 . 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. TEST the system for normal operation.
  8. I8 CHECK FOR CORRECT SPEED CONTROL MODULE OPERATION 
    • Disconnect the speed control module connector.
    • Check for:
      • Corrosion
      • Pushed-out pins
    • Connect the speed control module 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 speed control module. REFER to SPEED CONTROL . 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. TEST the system for normal operation.
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