Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 2185 PID: SID 232 SPN: 3512 FMI: 3 Sensor Supply 4 Circuit- Voltage Above Normal or Shorted to High Source
Circuit Description
Sensor supply 4 of the engine control module (ECM) provides a 5 VDC supply to the accelerator pedal position sensor.
Component Location
The accelerator pedal or lever position sensor is mounted to the accelerator pedal assembly. Refer to the OEM service manual.
Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.
Conditions for Setting the Fault Codes
The Engine Control Module (ECM) detected the sensor supply 4 signal voltage was greater than 5.25-VDC for more than 1 second.
Action Taken When the Fault Code is Active
The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.
The engine will only idle.
Conditions for Clearing the Fault Code
To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.
Shop Talk
This fault code can be caused by a short circuit to a voltage source in the OEM harness or a short circuit to an actuator signal circuit that is greater than 5-VDC.
Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.
Possible Cause:
1) OEM harness
2) ECM calibration
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