P1596

Tests 1 - 3:

Tests 4 - 8:

Test 9:

SYMPTOM
P1596 - SPEED CONTROL SWITCH 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 circuit shorted to voltage
- Speed control switch signal circuit open PCM to clock spring
- Speed control switch signal circuit open at clock spring