Mechanical Gas Fuel System G5.9, G8.3 – FAULT CODE 511

Electronic Fuel Control Valve Circuit – Voltage Below Normal or Shorted to Low Source


Overview

Electronic Fuel Control Valve Circuit – Voltage Below Normal or Shorted to Low Source

CODE REASON EFFECT
Fault Code: 511
PID: S018
SPN: 633
FMI: 4
LAMP: Warning
SRT: 

Electronic Fuel Control Valve Circuit – Voltage Below Normal or Shorted to Low Source.

Possible reduced engine performance or shutdowns.

Fuel Control Valve Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The commanded position signal from the ECM to the fuel control valve is a 12-VDC pulse-width modulated signal. An open circuit in the harness or at the fuel control valve connector will cause Fault Code 511 to be set.

Component Location

100-002 for the component location.

Shop Talk

The pulse-width modulated signal that is sent to the fuel control valve from the ECM should always read an alternating +12 VDC and 0 VDC.

Refer to Troubleshooting Fault Code t05-511

Last Modified:  15-Jul-2010