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Pinpoint Test H: All The STOPLAMP Are Inoperative

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. H1 CHECK CIRCUIT SBB71 (WH/RD) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Stoplamp Switch C2064
      • Fig 1: Measuring Voltage Between Stoplamp Switch C2064-1, Circuit SBB71 (WH/RD) & Ground
      GF0023449Courtesy of FORD MOTOR CO.
    • Measure the voltage between the stoplamp switch C2064-1, circuit SBB71 (WH/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  H2.
    2. NO  : VERIFY the BJB fuse 71 (10A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
  2. H2 CHECK THE STOPLAMP SWITCH 
      Fig 2: Connecting Fused (5A) Jumper Wire Between Stoplamp Switch C2064-1 & C2064-4, SBB71 (WH/RD) & CCB08 (VT/WH)
      GF0023450Courtesy of FORD MOTOR CO.
    • Connect a fused (5A) jumper wire between the stoplamp switch C2064-1, circuit SBB71 (WH/RD), harness side and the stoplamp switch C2064-4, circuit CCB08 (VT/WH), harness side.
    • Are the stoplamp illuminated? 
    1. YES  : INSTALL a new stoplamp switch. REFER to Stoplamp Switch  in this. TEST the system for normal operation.
    2. NO  : REPAIR circuit CCB08 (VT/WH) for an open. TEST the system for normal operation.
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