P1596

Tests 1 - 2:

Tests 3 - 7:

Tests 8 - 10:

SYMPTOM
P1596-SPEED CONTROL SWITCH ALWAYS HIGH

WHEN MONITORED
With the ignition key ON.

SET CONDITION
An open circuit is detected in the speed control ON/OFF switch circuit. The circuit must be above 4.8 volts for more than 2 minutes to set the DTC.

POSSIBLE CAUSES
- S/C wiring harness observable problem
- Speed control ON/OFF switch
- Clockspring signal/ground circuit open
- Speed control switch ground circuit open clockspring to S/C switch
- Speed control switch ground circuit open PCM to clockspring
- Speed control switch signal ckt shorted to voltage
- Speed control SW SIG CKT open clockspring to S/C switch
- Speed control SW SIG CKT open PCM to clock spring
- Powertrain control module