1)Open circuit in the engine harness signal circuit, connectors, or shutoff valve2)Signal circuit short to voltage source in the engine harness.
1)Replace the turbocharger control shutoff valve.2)Replace the ECM.
Cummins ISX CM870 (2003-06) Fault Code: 2353 PID: S146 SPN: 2791 FMI: 6/6 EGR Valve Control Circuit – Current Above Normal or Grounded Circuit. A short circuit to ground has been detected in the exhaust gas recirculation (EGR) valve motor circuit.
Cummins ISX CM870 (2003-06) Fault Code: 2352 PID: S146 SPN: 2791 FMI: 3/3 EGR Valve Control Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at the EGR valve motor circuit.
Cummins ISX CM870 (2003-06) Fault Code: 2351 PID: S146 SPN: 2791 FMI: 4/4 EGR Valve Control Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the EGR valve motor circuit.
Cummins ISX CM870 (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).
Cummins ISX CM870 (2003-06) Fault Code: 2348 PID: 27 SPN: 27 FMI: 13/13 EGR Valve Self Calibration. EGR valve failed automatic self calibration procedure.
Cummins ISX CM870 (2003-06) Fault Code: 2347 PID: S309 SPN: 2790 FMI: 0/15 Turbocharger Compressor Outlet Temperature (Calculated) – Data Valid But Above Normal Operating Range – Least Severe Level. High turbocharger compressor outlet air temperature has been calculated by the engine control module (ECM).