Electronic Control System Signature, ISX and QSX15 Engines – FAULT CODE 395

Actuator Circuit


Fault Code: 395
PID: S020
SPN: 635
FMI: 6/6
LAMP: Yellow

High current detected at front timing actuator circuit.

Engine is run using
only the rear three cylinders.

Front Timing Actuator Circuit

Circuit Description

The timing actuators are actuated by the electronic control module (ECM) to control fuel timing. Each timing actuator is connected to the ECM by a supply and a return wire. An electrical pulse is sent to the timing actuator from the ECM on the supply wire and returns to the ECM on the return wire. Each solenoid valve is normally closed, and it is
only opened by an electrical pulse from the ECM during metering.

Component Location

The front timing actuator is mounted on the fuel delivery housing. It is the second actuator from the front of the engine.

Shop Talk

The possible failure modes are short circuit to battery, low actuator resistance, or short circuit between supply and return wires.

Refer to Troubleshooting Fault Code t05-395.

Last Modified:  26-Oct-2010