All Models
- Turn ignition off. Check alternator operation. If alternator is not operating properly, replace alternator. If alternator is operating properly, disconnect brake level warning switch connector.
- Check for continuity between terminal No. 2 of connector and body ground. If no continuity is present, check for open between terminal No. 2 and body ground. Test body ground circuit.
- If continuity is present, check operation of brake fluid level warning switch. If switch is not operating properly, replace switch. If switch is operating properly, reconnect brake warning switch connector.
- Disconnect parking brake switch connector. Check operation of switch. If switch is not operating properly, replace switch. If switch is operating properly, disconnect computer connector. Remove "CHARGE" fuse and turn ignition on.
- Check that there is no voltage between terminal No. 12 and body ground with parking brake pulled up. If no voltage is present, check for open between terminal No. 12 of computer and terminal No. 1 of parking brake switch. If voltage is present, check for battery voltage between terminal No. 12 and body ground with parking brake released.
- If no voltage is present, check for short between terminal No. 12 of computer and terminal No. 1 of parking brake switch, terminal No. 1 of brake level warning switch or terminal No. 2 of alternator. If voltage was present, replace cruise control computer.