Control Unit

1. Use a small pin or drill to push in "TERMINAL RELEASE" on control unit. Pull connector out. Turn ignition off and cruise control on. Use test lamp to check for voltage at all 14 connector pins. No voltage should be present.
2. Turn ignition on. Check for voltage at terminals 5, 7 and 14. If no voltage at 7, check wiring and fuse No. 1. If no voltage at 5, check inline fuse, brake switch or cruise control switch, If voltage at 5 but not 14, check cruise control switch.
3. Check for voltage between terminals 5 and 7. If not present, check Green ground wire at throttle actuator.
4. Connect test lamp across terminals 5 and 13. Lamp should glow. When clutch or brake pedal is depressed, lamp should go out. If not, check switch adjustment and wiring.
5. Hold "SET SPEED" button in. Connect test lamp between ground and terminal 14. Test lamp should be off. If light glows check cruise control switch. Release "SET SPEED" button.
6. Hold switch in "RESUME" position. Connect test lamp to ground, then touch terminal 5, 10, and 14. Lamp should glow at all terminals. If not, check cruise control switch.

The control unit cannot be tested directly. If all other components test okay and wiring is good, replace control unit.