Flow of Diagnosis

NOTE: If any concerns are noted with the speedometer, stoplamps, or horn, address those concerns by referring to their associated sections 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 following chart:

VISUAL INSPECTION CHART

Mechanical
- Damaged speed control actuator cable
- Speed control actuator cable not attached to throttle

Electrical
- Blown fuse(s):
^ 10 A ASC
^ 15 A STOP
- Brake Pedal Position (BPP) switch
- Deactivator switch
- Clutch pedal position switch (M/T only)
- Damaged wiring
- Loose, corroded, or dirty connections
- Damaged speed control actuator switches

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. Symptom Related Diagnostic Procedures