Electronic Control System Signature, ISX and QSX15 Engines – FAULT CODE 245

Engine Fan Clutch Supply Circuit


Fault Code: 245
PID: S033
SPN: 647
FMI: 4/4
LAMP: Yellow

Less than 6 VDC detected at fan clutch when on. Indicates an excessive current draw from the electronic control module (ECM) or a faulty ECM output circuit.

The fan can stay on all the time.

Engine Fan Clutch Supply Circuit

Circuit Description

The fan clutch solenoid is a device used by the ECM to control the engine fan by sending a signal to open or close the fan clutch solenoid.

Component Location

See the OEM diagram for the location of the fan clutch solenoid.

Shop Talk

Possible cause for this fault code:

  • ECM fan clutch supply has a short circuit to ground.

Refer to Troubleshooting Fault Code t05-245.

Last Modified:  26-Oct-2010