Inspection and Verification
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.
- Verify the customer concern by operating the speed control system.
- Visually inspect for obvious signs of mechanical or electrical damage. See VISUAL INSPECTION CHART .VISUAL INSPECTION CHART
Mechanical Electrical - Speed control cable
- Central junction box (CJB) fuses:
- 5 (5A)
- (15A)
- Brake pedal position (BPP) switch
- Deactivator switch
- Clutch pedal position switch (manual transmission)
- Transmission range (TR) sensor (automatic transmission)
- Circuitry
- Speed control switches
- Check the wiring harness for obvious signs of shorts, opens, bad connections, or damage.
- Verify that the speedometer and stoplamps function correctly.
- Verify that the throttle cable is adjusted correctly and not holding the throttle open or increasing idle speed.
- Make sure the throttle linkage operates freely and smoothly when connected to the speed control cable and speed control actuator.
- If the fault is not visually evident, verify the symptom and proceed to the Symptom Chart.