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Test C: Speed Control Does Not Disengage When Brakes Are Applied

  1. Check stoplight operation by pressing and releasing brake pedal. If stoplights operate properly, go to next step. If stoplights do not operate properly, repair stoplights as necessary. See EXTERIOR LIGHTS in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  2. Turn ignition switch to LOCK position. Disconnect speed control servo/actuator harness connector C177. Speed control servo/actuator is located in right front of engine compartment, behind power steering fluid reservoir. See Figure. Using an ohmmeter, measure resistance between speed control servo/actuator harness connector C177 terminals No. 4 (Green wire) and No. 10 (Blue wire). See Figure. If resistance is 20 ohms or more and vehicle is equipped with M/T, go to next step. If resistance is 20 ohms or more and vehicle is equipped with A/T, repair open in Green wire between speed control servo/actuator and brake pedal position switch. Retest system operation. If resistance is less than 20 ohms, replace speed control servo/actuator and retest system operation. See SPEED CONTROL SERVO/ACTUATOR CABLE  under REMOVAL & INSTALLATION.
  3. Ensure ignition switch is in LOCK position. Disconnect Clutch Pedal Position (CPP) switch harness connector C292. CPP switch is located on top of clutch pedal support. Measure resistance between CPP switch terminals (component side). See Figure. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, replace CPP switch and retest system operation. See CLUTCH PEDAL POSITION SWITCH  under REMOVAL & INSTALLATION.
  4. Disconnect Brake Pedal Position (BPP) switch harness connector C245. BPP switch is located on top of brake pedal support. Measure resistance of Green wire between Brake Pedal Position (BPP) switch harness connector C245 and CPP switch harness connector C292 terminal No. 3. See Figure. If resistance is less than 5 ohms, repair open in White or Green wire between speed control servo/actuator and CPP switch, and retest system operation. If resistance is 5 ohms or more, repair open in Green wire between CPP switch and BPP switch, and retest system operation.