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PACCAR PX-6 CM2150 (2007-09) Fault Code: 2377 PID: SID 033 SPN: 647 FMI: 3 Fan Control Circuit – Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at the fan control circuit.
Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM.
The ECM monitors the voltage level on this circuit. When the ECM commands the fan signal low, it expects the voltage level to be approximately 0-VDC. If it detects a high voltage, this fault is recorded.
If Fault Code 2377 is still active after completing the following troubleshooting steps, consult the OEM troubleshooting and repair manual for procedures to check the fan clutch device for an open circuit or short circuit to ground.
Possible causes:
1)An open circuit in the engine harness or fan control solenoid
2)A short circuit to voltage source in the OEM harness
3)A malfunctioning ECM.
Possible repairs:
1)Replace the fan control solenoid.
2)Repair or replace the OEM harness.
3)Replace the ECM.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 2376 PID: 412 SPN: 412 FMI: 4 Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at EGR temperature circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 2375 PID: 412 SPN: 412 FMI: 3 Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at EGR temperature circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 2374 PID: 131 SPN: 1209 FMI: 4 Exhaust Gas Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the exhaust gas pressure circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 2373 PID: 131 SPN: 1209 FMI: 3 Exhaust Gas Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the exhaust gas pressure circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 2367 PID: SID 80 SPN: 1073 FMI: 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.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 2363 PID: SID 029 SPN: 1073 FMI: 4 Engine Brake Actuator Driver Output 2 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the engine brake solenoid number 2 signal circuit.