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Pinpoint Test E: The Speed Control Switch Is Inoperative

  1. E1 CHECK THE SPEED CONTROL SWITCH 
    • Key in OFF position.
    • Disconnect: Speed Control Actuator C122.
    • Measure the resistance between the speed control actuator C122 pin 5, circuit 8-PG13 (WH), harness side and the speed control actuator C122 pin 6, circuit 9-PG13 (BN), harness side while pressing the speed control switch as follows:
      SPEED CONTROL SWITCH RESISTANCE

      Speed Control Switch Resistance Value
      COAST Between 114 and 126 ohms
      SET/ACC Between 612 and 748 ohms
      RES Between 2,090 and 2,310 ohms
      OFF Less than 5 ohms
      Fig 1: Checking Speed Control Switch
      G03951905Courtesy of FORD MOTOR CO.
    • Are the speed control switch resistance values OK? 
    • Yes  : INSTALL a new speed control actuator. REFER to SPEED CONTROL ACTUATOR . TEST the system for normal operation.
    • No  : INSTALL a new speed control switch. REFER to SPEED CONTROL SWITCH . TEST the system for normal operation.