Cumminz

Cummins ISB CM850 (2003-06) Fault Code: 2384 (ISC) PID: SID 27 SPN: 641 FMI: 4 VGT Actuator – Voltage Below Normal or Shorted to Low Source. Low voltage detected at turbocharger control valve circuit. Turbocharger control valve command can be monitored with the INSITE? electronic service tool. This parameter represents the ECM command to the turbocharger control valve which in turn controls the variable geometry actuator position. Possible causes: 1)Signal short circuit to ground2)Short circuit to ground in the turbocharger control valve. Possible repairs: 1)Replace the turbocharger control valve.2)The removal and installation of the connector may correct the fault.3)Replace the...

Cummins ISB CM850 (2003-06) Fault Code: 2385 (ISB) PID: SID 27 SPN: 641 FMI: 3 VGT actuator driver circuit – voltage above normal or shorted to high source. A possible cause of this fault is the turbocharger actuator signal (+ or -) leads can be shorted to a voltage source in the harness or the 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 engine harness.2)Replace the ECM.3The removal and installation of the connector may correct the fault....

Cummins ISB CM850 (2003-06) Fault Code: 2385 (ISC) PID: SID 27 SPN: 641 FMI: 3 VGT Actuator – Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at turbocharger control valve circuit. Turbocharger control valve command can be monitored with the INSITE? electronic service tool. This parameter represents the ECM command to the turbocharger control valve, which in turn controls the variable geometry actuator position. Possible causes: 1)Open circuit in the engine harness or connectors2)Open circuit in the turbocharger control valve3)Signal circuit short to voltage source in the engine harness. Possible repairs: 1)Replace the turbocharger...

Cummins ISB CM850 (2003-06) Fault Code: 2386 PID: SPN: 2975 FMI: 6 Turbocharger actuator motor circuit – current is above normal. Excessive current detected at the turbocharger actuator motor circuit. The ECM monitors the current draw of this circuit. If the ECM detects excessive current for a calibrated period of time, it records this fault. Possible causes: 1)Turbocharger actuator motor signal (+ or -) leads shorted together in the engine harness, turbocharger actuator motor, or ECM2)Low turbocharger actuator motor internal resistance. Possible repairs: 1)Replace the turbocharger actuator assembly.2)Repair or replace the engine harness.3)Replace the turbocharger actuator motor assembly.4)Replace the turbocharger....

Cummins ISB CM850 (2003-06) Fault Code: 2387 PID: SID 146 SPN: 2975 FMI: 7 Turbocharger actuator motor – the mechanical system is not responding properly or is out of adjustment. Turbocharger actuator is not responding or is slow to respond. Possible causes: 1)Malfunctioned turbocharger position sensor, and mechanical or electrical malfuction.2)Turbocharger actuator motor assembly malfunction, requiring a high current to operate the turbocharger, such as a stuck or sticking turbocharger. Inspect the turbocharger vanes for residue, and clean the vanes, if required. Find the source of the residue and repair. Possible repairs: 1)Repair or replace the engine harness.2)Replace the ECM.3)Repair...