Fuel Conditioning Module

The fuel filter assembly (3) is mounted to the right side of the fuel tank. The paper filter element traps particles in the fuel that may damage the fuel injection system.

• Fuel Filter/Water Separator
• Fuel Heater
• Fuel Temperature Sensor
• Water in Fuel Sensor

Fuel Filter/Water Separator 

The paper filter element traps particles in the fuel that may damage the fuel injection system and is designed to allow trapped water particles to settle to the bottom of the filter assembly.

Fuel Heater 

The fuel heater located in the fuel conditioning module is controlled by the engine control module (ECM). When the temperature of the fuel is below the calibrated level the ECM will command the fuel heater relay ON. With the relay ON battery voltage is supplied to the fuel heater to assist in cold weather operation.

Fuel Temperature Sensor 

The fuel temperature sensor is a thermistor that is located in the fuel conditioning module The ECM monitors the fuel temperature sensor signal circuit in order to calculate the temperature of the fuel entering the fuel injection pump.

Water in Fuel Sensor 

The water in fuel sensor is a 3 wire sensor the monitors the presence of diesel and water. When water is present the ECM detects low voltage on the signal circuit and sends a message to the instrument panel cluster to illuminate the WATER IN FUEL INDICATOR.