P0579

Test 1 - 2:

Test 3 - 6:

Test 7 - 8:

SYMPTOM
P0579-SPEED CONTROL SWITCH # 1 PERFORMANCE

POSSIBLE CAUSES
- Speed control switch status
- Speed control switches
- (V37) S/C switch signal circuit shorted to sensor ground
- (V37) S/C switch signal circuit shorted to ground
- (V37) S/C switch signal circuit shorted to battery voltage
- (V37) S/C switch signal circuit open
- (K4) sensor ground open
- PCM