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Home >> Ford >> 1992 >> Explorer 2D Utility, RWD, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Testing >> Amplifier Test >> ON Circuit Test

ON Circuit Test

  1. DO NOT  substitute a new amplifier until throttle actuator has been tested. See SERVO TEST. Turn ignition on. Connect voltmeter between circuit No. 151 (Light Blue/Black wire) of amplifier connector and ground.
  2. Press speed control ON button. Voltmeter should indicate battery voltage. If battery voltage does not exist, check horn relay circuit and control switch test. See HORN RELAY CIRCUIT TEST and CONTROL SWITCH & CIRCUIT TEST.
  3. Release ON button. Voltmeter should indicate approximately 7.8 volts. If meter does not indicate approximately 7.8 volts, check for bad connector on circuit No. 151 (Light Blue/Black wire) of amplifier connector, ground circuit No. 57 (Black wire) to amplifier, or fuse.
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