Hi folks,
Trying to resolve radiator fan remaining on after engine shut off, doesn't happen all the time. Have replace coolant temperature sensor, check the radiator fuse under the hood. Ran the fan tests in VIDA, 25,50,100% all good.
Vida showing code: ECM-621D Engine cooling fan - Signal too low.
Possible source:
Short circuit to ground in signal cableShort circuit to ground in power supply cableDamaged cooling fan control module.
Would a low A/C refrigerant also trigger this check engine light?
Any help would be much appreciated.