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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
      • Fig 1: Measuring Resistance
      GF0040264Courtesy of FORD MOTOR CO.
    • Measure the resistance between the speed control actuator C122-5, circuit 8-PG13 (WH), harness side and the speed control actuator C122-6, circuit 9-PG13 (BN), harness side while pressing the speed control switch as follows:
      Speed Control Switch Resistance Value
      COAST Between 114 and 126 ohms
      SET/ACC Between 646 and 714 ohms
      RES Between 2,090 and 2,310 ohms
      OFF Less than 5 ohms
    • Are the speed control switch resistance values OK? 
    1. YES  : INSTALL a new speed control actuator. REFER to Speed Control Actuator . TEST the system for normal operation.
    2. NO  : INSTALL a new speed control switch. REFER to Speed Control Switch . TEST the system for normal operation.
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