Genuine Nissan Frontier Fuel Temperature Sensor

Nissan Frontier Fuel Temperature Sensor Parts Questions & Experts Answers

• Sensor Assembly-Fuel TEMPERATUER
  22630-0S320
  Q: What is the purpose of the fuel temperature sensor in Nissan Frontier?

  A:

  Since 1997, Frontier trucks use a special sensor to measure fuel temperature in their fuel tanks. This sensor measures adjustment in resistance as the fuel's temperature rises. Embedded into the fuel tank below the fuel level sending unit, the sensor sends readings to the PCM for analysis, and when any part of the circuit fails, the PCM instantly logs an error. When you lift the vehicle with your jack, look for the sensor's electrical lock that connects to the fuel level and pump unit. Before you can check the sensor, make sure it's receiving 5.0 volts from the PCM's reference and ground circuits. Disconnect the sensor's electrical connector and measure voltage between the reference and ground terminals with the ignition on, so you know it's working correctly. Look at the wires between the PCM and engine ground, then fix them to get the right voltage. Connect an ohmmeter to the sensor terminals. Normal room temperature resistance should be between 2,300 and 2,700 ohms. Before making your test more exact, fully remove the sensor, place it in hot water, measure resistance, and check sensor readings against the intake air temperature resistance guide. If your fuel temperature sensor's measured resistance isn't within the normal range, you have to replace it. To install the new sensor, take out the fuel level sending unit first. Then pull out the sensor. After fixing the new unit, connect the fuel level sending unit last on reverse order.