Start the engine. Turn on the cruise control main switch, then drive the vehicle to speeds over 25 mph (40 km/h) with the cruise control. Does the cruise control operate? YES - Go to step 3. NO - Check the cruise control unit (see page 4-44) or cruise control actuator. Turn the ignition switch OFF. Disconnect ECM/PCM connector E (31P) and cruise control unit 14P connector. Check for continuity between ECM/PCM connector terminal E12 and body ground. ECM/PCM CONNECTOR E (31P) Wire side of female terminals Is there continuity? YES - Repair short to ground in the wire between PCM connector terminal E12 and the cruise control unit 14P connector terminal No. 8. NO - Go to step 6. Reconnect ECM/PCM connector E (31P) and the cruise control unit 14P connector.

Connect a voltmeter between the No. 8 terminal of the cruise control unit 14 P connector and body ground. Test-drive the vehicle at speeds over 25 mph (40 km/h) with the cruise control set, and watch the voltmeter. CRUISE CONTROL UNIT 14P CONNECTOR Wire side of female terminals Is there about 1 V? YES - Go to step 8. NO - Replace the cruise control unit. Connect a voltmeter between ECM/PCM connector terminal E12 and body ground. Drive the vehicle at speeds over 25 mph (40 km/h) with the cruise control set, and watch the voltmeter. ECM/PCM CONNECTOR E (31P) Wire side of female terminals Is there about 1 V? YES - Check for loose connectors. If necessary replace the ECM/PCM and recheck (see page 11-3) or 5-door (see page 11-309). NO - Repair open in the wire between ECM/PCM connector terminal E12 and the control unit 14P connector terminal No. 8.