Cummins ISB CM850 (2003-06) Fault Code: 2186 PID: SID 232 SPN: FMI: 4 Sensor Supply Voltage 4 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at +5 VDC sensor supply circuit to the accelerator pedal position sensor.
Cummins ISB CM850 (2003-06) Fault Code: 2186 PID: SID 232 SPN: FMI: 4 Sensor Supply Voltage 4 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at +5 VDC sensor supply circuit to the accelerator pedal position sensor.
For Marine application, the accelerator lever is typically located in the engine room or at the helm.
Low voltage on the +5 VDC supply line can be caused by a short circuit to ground in the supply line, a short circuit between the supply line and return circuit, a failed accelerator, or a failed ECM power supply.
Possible repairs:
1)Replace the accelerator pedal or lever position sensor.
2)Repair or replace the OEM harness.
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