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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1196 (Exterior Lighting System) >> Diagnosis And Testing >> Stoplamps >> Pinpoint Test K: The Stoplamps Are Inoperative >> Pinpoint Test K: The STOPLAMPS Are Inoperative

Pinpoint Test K: The STOPLAMPS Are Inoperative

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. K1 CHECK THE VOLTAGE TO THE STOPLAMP SWITCH 
    • Key in OFF position.
    • Disconnect: Stoplamp Switch C278.
    • Measure the voltage between the stoplamp switch C278-2, circuit 10 (LG/RD), harness side and ground.
      Fig 1: Measuring Voltage Between Stoplamp Switch C278-2 And Ground
      G03945627Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to K2.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  2. K2 CHECK THE STOPLAMP SWITCH OPERATION 
    • Connect a jumper wire between the stoplamp switch C278-2, circuit 10 (LG/RD), harness side and the stoplamp switch C278-1, circuit 1052 (TN/BK) harness side.
      Fig 2: Connecting Jumper Wire Between Stoplamp Switch C278-2 And Stoplamp Switch C278-1
      G03945628Courtesy of FORD MOTOR CO.
    • Do the stoplamps illuminate? 
    • Yes  : INSTALL a new stoplamp switch. REFER to STOPLAMP SWITCH . TEST the system for normal operation.
    • No  : REPAIR circuit 1052 (TN/BK). TEST the system for normal operation.
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