Inspection and Verification

1. Verify the customer concern by operating the speed control system.
2. Verify the speedometer operates correctly by driving the vehicle. If the speedometer does not operate correctly, refer to Instrument Panel, Gauges and Warning Indicators.
3. Verify the stoplamps operate correctly by depressing the brake pedal. If the stoplamps do not operate correctly, refer to Lighting and Horns.
4. Verify the horns operate correctly by depressing the horn switch. If the horns do not operate correctly, refer to Horn.

Visual Inspection Chart:

5. Visually inspect for obvious signs of mechanical and electrical damage.
6. If the fault is not visually evident, go to the Self-Test Diagnostics. Reading and Clearing Diagnostic Trouble Codes