Checking Speed Control Operation With No DTC's Present

Tests 1 - 3:

Tests 4 - 9:

Tests 10 - 14:

Tests 15 - 16:

SYMPTOM
CHECKING THE SPEED CONTROL OPERATION

POSSIBLE CAUSES
- CANCEL switch
- COAST switch
- Connector observable defect
- Ground circuit open
- SET switch
- Vacuum solenoid control circuit open
- Vent solenoid control circuit open
- Throttle cable observable defect
- Vacuum check valve
- S/C servo
- Vacuum supply leak or restriction