Downhill speed control
â–¶ How to fix
Check the downhill speed control switch, including wiring and connectors.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The voltage in the circuit for the downhill speed control switch has been either above or below the permitted level.
Possible cause
Short circuit or open circuit. There may also be a fault in the downhill speed control switch.