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Resistance Inspection

NOTE:
  • The low fuel pressure sensor/fuel temperature sensor cannot be removed as a single unit. When replacing the low fuel pressure sensor/fuel temperature sensor, replace it together with the high pressure fuel pump as a single unit.
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
  3. Disconnect the low fuel pressure sensor/fuel temperature sensor connector.
  4. Measure the resistance between low fuel pressure sensor/fuel temperature sensor terminals E and C.
Fig 1: Low Fuel Pressure Sensor/Fuel Temperature Sensor Connector Terminals
G11436101Courtesy of MAZDA MOTORS CORP.

Specification (Reference) 

Fuel temperature (°C {°F}) Resistance (Kilohms)
-40 {-40} Approx. 44.9
0 {32} Approx. 5.78
25 {77} Approx. 2.04
140 {284} Approx. 0.0719
Fig 2: Fuel Temperature Resistance Graph
G11436102Courtesy of MAZDA MOTORS CORP.