P1595

Tests 686 - 691:

Tests 692 - 695:

Tests 696 - 700:

Tests 701 - 705:

Tests 706 - 710:

SYMPTOM
P1595 - SPEED CONTROL SOLENOID CIRCUITS

WHEN MONITORED
With the ignition key ON, the speed control switched ON, the SET switch pressed and the vehicle in drive gear moving between 30 - 100 mph (45 - 165 km/h).

SET CONDITION
The powertrain control module actuates the vacuum and vent solenoids but they do not respond.

POSSIBLE CAUSES
- Speed control
- Ground circuit at S/C servo connector open
- S/C wiring harness inter defect (S/C vacuum solenoid actuation)
- S/C vacuum solenoid control circuit open
- S/C vacuum solenoid control circuit short to ground
- S/C vent solenoid control circuit open
- S/C vent solenoid control circuit short to ground
- S/C wiring harness inter defect (S/C vent solenoid actuation)
- S/C wiring harness observable defect
- S/C servo defective (12 volt driver circuit)
- S/C power supply circuit open
- S/C power supply circuit shorted to ground
- Brake switch defective
- Brake switch out of adjustment
- S/C brake switch output circuit open
- S/C brake switch output circuit shorted to ground
- PCM defective
- PCM defective (12 volt driver circuit)