Operation CHARM: Car repair manuals for everyone.

Checking Speed Control On/Off Switch

Tests 1 - 3:




Tests 4 - 8:




Tests 9 - 11:





SYMPTOM
CHECKING SPEED CONTROL ON/OFF SWITCH

POSSIBLE CAUSES
- Clockspring defective
- Speed control switch signal circuit shorted to ground
- Speed control ON/OFF switch defective
- Speed control ON/OFF/SET switch defective
- Speed control switch signal circuit open or high resistance
- Speed control switch signal circuit shorted to voltage
- PCM defective (checking S/C operation)
- Powertrain control module defective
- Speed control RESUME/ACCEL switch defective