Checking Speed Control Operation

SYMPTOM
CHECKING THE SPEED CONTROL OPERATION

POSSIBLE CAUSES
- Cancel switch defective
- Coast switch defective
- Connector observable defect
- Ground circuit open
- Set switch defective
- Vacuum solenoid control circuit open
- Vent solenoid control circuit open
- Throttle cable observable defect
- Vacuum check valve defective
- Speed control servo defective
- Vacuum supply leak or restriction