Cummins ISM CM870 (2003-06) Fault Code: 585 PID: S39 SPN: 677 FMI: 4/4 Starter Relay Driver Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at starter lockout circuit.

The ECM monitors the voltage level on this circuit. If it detects a low voltage when the signal is commanded ON, it records this fault code. This fault code can be caused by a short circuit to ground in the starter lockout relay, OEM harness, or connectors.

Possible repairs:

1)Replace the starter lockout relay
2)Repair or replace the OEM harness.

Cummins ISM CM870 (2003-06) Fault Code: 584 PID: S39 SPN: 677 FMI: 3/3 Starter Relay Driver Circuit - Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at starter lockout circuit.

Cummins ISM CM870 (2003-06) Fault Code: 559 PID: P157 SPN: 157 FMI: 1/18 Injector Metering Rail 1 Pressure - Data Valid But Below Normal Operating Range - Moderately Severe Level. The engine control module (ECM) has detected that fuel pressure is lower than commanded pressure.

Cummins ISM CM870 (2003-06) Fault Code: 551 (SSS) PID: S230 SPN: 558 FMI: 4/4 Accelerator Pedal Idle Validation Circuit - data incorrect. No voltage detected simultaneously on both idle validation and off-idle validation switches.

Cummins ISM CM870 (2003-06) Fault Code: 551 (ISS) PID: S230 SPN: 558 FMI: 4/4 Accelerator Pedal Idle Validation Circuit - data incorrect. No voltage detected simultaneously on both idle validation and off-idle validation switches.

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