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Test F: Set/ACCEL Switch Inoperative

  1. Check SET/ACCEL Switch Operation  - Disconnect speed control servo/actuator connector C136 (located near master cylinder). While pressing SET/ACCEL switch and rotating steering wheel, check resistance between speed control servo/actuator connector C136 terminals No. 5 and 6. See Figure . If resistance is 646-714 ohms, go to next step. If resistance is not 646-714 ohms, replace speed control switch assembly and retest system operation.
  2. Check Switch Return Circuit  - Using an ohmmeter, check resistance between speed control servo/actuator connector C136 terminals No. 6 and 10. If resistance is more than 10 k/ohms, replace speed control servo/actuator and retest system operation. If resistance is 10 k/ohms or less, repair shorted Dark Green/Orange wire. Retest system operation.
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