Cummins ISM CM875 (2003-06) Fault Code: 2349 PID: S146 SPN: 2791 FMI: 5/5 EGR Valve Control Circuit – Current Below Normal or Open Circuit. Motor terminal or motor coil open circuit has been detected by the engine control module (ECM).

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.

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)EGR valve 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 EGR valve.
2)Repair or replace the EGR valve extension harness.
3)Repair or replace the engine harness.

Related

Categories Cumminz, DTC TRUCKS, ISM CM875 (2003-06) Tags -, 2003-06, 2349, 2791, 5/5, been, Below, by, Circuit, Circuit., CM875, Code, coil, Control, Cummins, Current, Detected, ECM)., EGR, Engine, Fault, FMI, has, ISM, Module, Motor, Normal, Open, or, PID, S146, SPN, terminal, the, Valve

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