Clutch Switch Circuit
- Ensure starting system is operating normally. Check for starting system problems and repair as necessary. If starting system is okay, go to next step.
- Perform clutch switch position test. See CANCEL SWITCHES test in CRUISE CONTROL FUNCTION TEST under TROUBLE SHOOTING. If clutch switch input signal is not as specified, go to next step. If clutch switch input signal is as specified, no problem is indicated at this time. Fault may be intermittent. If sent here from SYMPTOM TESTS, perform next test listed.
- Remove cruise control ECU with connector attached. See Figure. Turn ignition switch to ON position. Using voltmeter positive lead, backprobe cruise control ECU connector terminal No. 3 (Black/White wire) with negative lead to ground. With clutch pedal depressed, battery voltage should exist. With clutch pedal released, voltage should be less than one volt. If voltage is not as specified, go to next step. If voltage is as specified, no problem is indicated at this time. Fault may be intermittent. If sent here from SYMPTOM TESTS, perform next test listed.
- Check wiring harness and connectors between cruise control ECU and TURN & GAUGE fuses in instrument panel junction block. Repair as necessary. If wiring harness and connectors are okay, replace cruise control ECU and retest system.