P1596

Tests 777 - 781:

Tests 782 - 785:

SYMPTOM
P-1596 SPEED CTRL SW ALWAYS HIGH

WHEN MONITORED
With the ignition key on.

SET CONDITION
An open condition is detected in the speed control on/off switch circuit.

POSSIBLE CAUSES
- S/C wiring harness intermittent defect
- Speed control on/off switch defective
- Speed control switch ground circuit open
- Powertrain control module defective
- Speed control switch signal ckt shorted to voltage
- Speed control sw sig ckt open PCM to clock spring
- Speed control switch sig ckt open at clock spring