Mechanical Gas Fuel System G5.9, G8.3 – FAULT CODE 514

Electronic Fuel Control Valve – Mechanical System Not Responding Properly or Out of Alignment


Overview

Electronic Fuel Control Valve – Mechanical System Not Responding Properly or Out of Alignment

CODE REASON EFFECT
Fault Code: 514
PID: S018
SPN: 633
FMI: 7
LAMP: Warning
SRT: 

Electronic Fuel Control Valve – Mechanical System Not Responding Properly or Out of Alignment.

Possible reduced engine performance or shutdowns.

Fuel Control Valve Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The fuel control valve position circuit consists of the commanded position signal from the ECM and feedback signal that is received by the ECM from the fuel control valve. The fuel control valve command position signal is supplied by the ECM. The position signal is a +12-VDC pulse-width modulated signal and the feedback is a 0- to 5-VDC signal.

Component Location

100-002 for the component location.

Shop Talk

The fuel control valve commanded signal and the feedback signal can be monitored using the display panel. The fuel control valve is most likely to fail in either the closed or fully open position. Monitor the position feedback signal to ensure that the valve is moving freely.

If the difference between the command position and the feedback position signal is larger than the fault threshold, the fault for the mechanically stuck valve will be set.

Refer to Troubleshooting Fault Code t05-514

Last Modified:  15-Jul-2010