Operation CHARM: Car repair manuals for everyone.
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Component Tests and General Diagnostics


1. Start Engine.
2. Turn speed control system On. If any time during the following steps the system should appear to go out of control and overspeed, be prepared to turn speed control system off at once using the speed control system OFF button or ignition switch.
3. Accelerate and hold at 35 mph.
4. Press and release SET ACCEL button. Hold foot pressure very lightly on accelerator pedal. Speed should continue at 35 mph.
5. Press OFF button, engine should decelerate.
6. Press ON button, accelerate and hold speed at 35 mph.
7. Press and hold SET ACCEL button, then slowly remove foot from accelerator. Engine RPM should gradually increase.
8. When speed reaches 50 mph, release SET ACCEL button. Vehicle speed should stay at 50 mph.
9. Press COAST button and hold, engine should return to idle speed. Slow drive wheels to 35 mph.
10. Release COAST button, speed should set at 35 mph.
11. Press and release brake pedal. Speed control system should shutoff and engine speed should decelerate to idle.
12. Set speed at 50 mph, then using brakes, decelerate to 35 mph, maintain speed using the accelerator. Depress and release RESUME button, speed should return to 50 mph.
13. Press and release OFF button.