Checking Speed Control Operation With No DTC's Present

Tests 1 - 3:

Tests 4 - 9:

Tests 10 - 14:

Tests 15 - 17:

SYMPTOM
CHECKING THE SPEED CONTROL OPERATION

POSSIBLE CAUSES
- S/C vacuum solenoid control circuit open
- Speed control ground circuit open
- Speed control vent solenoid control circuit open
- S/C servo vacuum supply has leak or restriction
- Throttle cable observable defective
- S/C servo defective
- Speed control servo connector observable defect
- Speed control cancel switch defective
- Speed control coast switch defective
- Speed control set switch defective
- Vacuum check valve defective