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DTC P0581-Speed Control Switch 1 Circuit High: Notes

Fig 1: Speed Control Switch Circuit - Circuit Diagram

G04854254

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article.

When Monitored:
With the ignition key on. Battery voltage above 10 volts.
Set Condition:
The PCM detects an open or short to voltage in the Speed Control Switch Signal circuit. One Trip Fault. Three good trips to turn off the MIL.

Possible Causes
(V37) S/C SWITCH NO. 1 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(V37) S/C SWITCH NO. 1 SIGNAL CIRCUIT OPEN BETWEEN PCM AND CLOCKSPRING
(K900) SENSOR GROUND CIRCUIT OPEN BETWEEN PCM AND CLOCKSPRING
(K900) SENSOR GROUND CIRCUIT OPEN BETWEEN CLOCKSPRING AND S/C SWITCH
(V37) S/C SWITCH NO. 1 SIGNAL CIRCUIT OPEN BETWEEN CLOCKSPRING AND S/C SWITCH
CLOCKSPRING
SPEED CONTROL SWITCH
PCM

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.