Checking Speed Control Operation
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* 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