Cummins ISB CM850 (2003-06) Fault Code: 2383 PID: SID 27 SPN: 641 FMI: 5 Variable Geometry Turbocharger actuator circuit – current below normal, or open circuit.
Cummins ISB CM850 (2003-06) Fault Code: 2383 PID: SID 27 SPN: 641 FMI: 5 Variable Geometry Turbocharger actuator circuit – current below normal, or open circuit.
The ECM monitors the voltage level of this circuit and logs a fault code if the voltage level indicates an open circuit or short to voltage source is present. This fault is always set inactive when the keyswitch is turned on. If the fault condition reoccurs while the keyswitch is in the ON position, the fault code will be set active. Since active faults are set inactive at key-on, this troubleshooting tree should be used to troubleshoot active and inactive faults.
Possible causes:
1)An open circuit in the engine harness, connectors, motor, or ECM
2)Turbocharger actuator motor signal (+ or -) leads shorted to a voltage source in the engine harness or ECM.
Do not supply voltage of any kind to the EGR valve motor. This circuit uses a pulse-width-modulated signal and direct voltage can permanently damage the motor.
Possible repairs:
1)Replace the turbocharger.
2)Repair or replace the engine harness.
3)Replace the ECM.
4)The removal and installation of the connector may correct the fault.
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