P1596

Tests 1 - 2:

Tests 3 - 6:

Tests 7 - 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 switch ground circuit open clockspring to S/C switch
- S/C switch ground circuit open PCM to clockspring
- Clockspring signal/ground circuit open
- S/C wiring harness observable problem
- S/C ON/OFF switch
- S/C switch signal circuit open PCM to clockspring
- S/C switch signal circuit open clockspring to S/C switch
- S/C switch signal circuit shorted to voltage
- Powertrain Control Module