Component Tests and General Diagnostics

1. Block front wheels securely. Using a suitable lifting device, raise and support rear of vehicle. Never attempt to use the vehicle bumper jack for a test of this type.
2. Start engine and shift transmission to Drive.
3. Turn on the speed control system. If at any time during the following steps the system should appear to go out of control and over speed, be prepared to turn speed control system off at once with the ``Off'' switch or ignition switch.
4. Accelerate and hold at 35 mph.
5. Press and release ``Set'' button. Hold foot pressure very lightly on accelerator pedal.
6. Press ``Off'' button. The engine should decelerate to idle. Stop rear wheel with service brakes.
7. Press ``On'' button, accelerate and hold speed at 35 mph.
8. Press and hold ``Set-Acc'' button. Slowly remove foot from accelerator. The engine rpm should gradually increase.
9. When the speed reaches 50 mph, release ``Set-Acc'' button. The vehicle should maintain 50 mph for a short time before surging begins.
10. Press ``Coast'' button and hold. The engine should idle. Slow rear wheels to 35 mph.
11. Release ``Coast'' button. Speed should set in and surging should soon start.
12. Apply brake pedal. The system should shut off, engine should decelerate to idle and wheels should stop turning.
13. On models equipped with ``Resume'', set speed at 50 mph. Decelerate to 35 mph and maintain 35 mph with the accelerator. Depress and release ``Resume'' button. The speed should return to 50 mph.