Cummins ISM CM870 (2003-06) Fault Code: 2367 (V1) PID: S28 SPN: 1072 FMI: 3/3 Engine Brake Actuator Driver Output 2 Circuit – Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at the engine brake solenoid Number 2 signal circuit.
Possible causes:
1)An open circuit in the engine harness, brake harness, or engine brake solenoids.
2)A short to voltage source in the engine harness.
3)A malfunctioning ECM.
Possible repairs:
1)Replace the engine brake solenoid.
2)Replace the engine brake harness
3)Replace the ECM.
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