Inspection and Verification
NOTE: If any concerns are noted with the speedometer, stoplamps, or horn, address those concerns by referring to their associated systems before continuing speed control diagnosis.1. Verify the customer concern by operating the speed control system.
2. Visually inspect for obvious signs of mechanical and electrical damage using the chart.
VISUAL INSPECTION CHART
3. Check the wiring harness for obvious signs of shorts, opens, bad connections, or damage.
4. Verify that the speedometer and stoplamps function properly.
5. Verify that the throttle cable is adjusted properly and not holding the throttle open or increasing idle speed.
6. Make sure the throttle linkage operates freely and smoothly when connected to the speed control actuator cable and speed control servo.
7. If the fault is not visually evident, verify the symptom and proceed to symptom chart. Diagnosis By Symptom