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.
This fault code will become active when the engine is running, the primary engine speed sensor signal is present, the battery charge is above a minimum threshold, and, at the same time, the measured injector power supply voltage is lower than the commanded injector power supply voltage.
This fault code will become inactive whenever the keyswitch is turned on.
This fault code will become inactive whenever the engine is running and measured injector power supply voltage reaches the commanded injector power supply voltage.
1)Clean the battery terminal connections.
2)Replace the ECM.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 343 PID: SID 254 SPN: 629 FMI: 12 Electronic Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component. ECM power supply errors have been detected.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 334 PID: 110 SPN: 100 FMI: 2 Engine Coolant Temperature – Data Erratic, Intermittent, or Incorrect. The engine coolant temperature reading is not changing with engine operating conditions.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 332 PID: SID 004 SPN: 654 FMI: 5 Injector Solenoid Driver Cylinder 4 Circuit – Current Below Normal or Open Circuit. High resistance or no current detected at cylinder 4 injector driver or return pin.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 331 PID: SID 002 SPN: 652 FMI: 5 Injector Solenoid Driver Cylinder 2 Circuit – Current Below Normal or Open Circuit. High resistance or no current detected at cylinder 2 injector supply or return pin.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 325 PID: SID 006 SPN: 656 FMI: 5 Injector Solenoid Driver Cylinder 6 Circuit – Current Below Normal or Open Circuit. High resistance or no current detected at cylinder 6 injector supply or return pin.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 324 PID: SID 003 SPN: 653 FMI: 5 Injector Solenoid Driver Cylinder 3 Circuit – Current Below Normal or Open Circuit. High resistance or no current detected at injector 3 supply or return pin.
