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Pinpoint Test C: Flash Code 3 - DEACTIVATOR Switch Or Circuit Failure

CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
  1. C1 CHECK THE DEACTIVATOR SWITCH CIRCUITRY 
    • Key in OFF position.
    • Disconnect: Speed Control Actuator C122
      • Fig 1: Checking Circuit For Voltage
      GF0010781Courtesy of FORD MOTOR CO.
    • Measure the voltage between the speed control actuator C122-9, circuit 248 (TN/OG), harness side and the speed control actuator C122-10, circuit 57 (BK), harness side.
    • Is the voltage greater than 10 volts? 
    1. YES  : INSTALL a new speed control actuator. REFER to Speed Control Actuator . TEST the system for normal operation.
    2. NO  : Go to  C2.
  2. C2 CHECK CIRCUIT 10 (LG/RD) FOR AN OPEN 
    • Disconnect: Deactivator Switch C277
      • Fig 2: Checking Circuit For Voltage
      GF0020591Courtesy of FORD MOTOR CO.
    • Measure the voltage between the deactivator switch C277-2, circuit 10 (LG/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  C3.
    2. NO  : VERIFY the smart junction box (SJB) fuse 17 (15A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
  3. C3 CHECK CIRCUIT 248 (TN/OG) FOR AN OPEN 
      Fig 3: Checking Circuit For Open
      GF0020592Courtesy of FORD MOTOR CO.
    • Measure the resistance between the speed control actuator C122-9, circuit 248 (TN/OG), harness side and the deactivator switch C277-1, circuit 248 (TN/OG), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new deactivator switch. REFER to Speed Control Deactivator Switch . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
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