Checking Speed Control Operation

Tests 844 - 849:

Tests 850 - 854:

Tests 855 - 860:

Tests 861 - 865:

Tests 866 - 870:

Tests 871 - 872:

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 brk switch) open
- Cancel switch defective
- SET/Resume switch defective
- Brake switch defective
- Brake switch out of adjustment
- Brake switch connector observable defect
- PCM (speed control) defective
- S/C servo connector terminal observable defect
- Vacuum reservoir defective
- Vacuum supply leak or restriction