Checking Speed Control Operation With No DTC's Present

Tests 1 - 3:

Tests 4 - 9:

Tests 10 - 14:

Tests 15 - 19:

Tests 20 - 25:

Tests 26 - 28:

SYMPTOM
CHECKING SPEED CONTROL OPERATION

POSSIBLE CAUSES
- Ground circuit open
- S/C brake switch output circuit shorted to ground
- S/C power supply circuit (PCM to brake switch) open
- CANCEL switch defective
- SET/RESUME switch defective
- Brake switch defective
- Brake switch connector observable defect
- PCM (Speed Control) defective
- S/C servo connector terminal observable defect
- Vacuum reservoir defective
- Vacuum supply leak or restriction
- Throttle cable defective