P0580

Test 1 - 3:

Test 4 - 7:

SYMPTOM
P0580-LOW VOLTAGE DETECTED AT THE SPEED CONTROL SWITCH

WHEN MONITORED
While the ignition is on

SET CONDITION
Speed control MUX switch below 1.0 volts for 5 seconds.

POSSIBLE CAUSES
- S/C wiring harness observable problem
- S/C switch (on/off)
- Clockspring shorted to ground
- S/C switch (resume/accel)
- S/C switch signal circuit shorted to ground
- S/C signal circuit shorted to sensor ground
- ECM