FUEL TEMPERATURE SENSOR INSPECTION [MZR-CD (RF Turbo)]

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Note
•  Perform the following test only when directed.

Resistance Inspection

1.  Disconnect the negative battery cable.

2.  Remove the supply pump. (See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

3.  Measure the resistance between the fuel temperature sensor terminals using an ohmmeter.

•  If not as specified, repair the supply pump. (See SUPPLY PUMP REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
•  If fuel temperature sensor is okay, perform the “Circuit Open/Short Inspection”.

Specification

Ambient temperature

(°C {°F})

Resistance (kilohm)
20 {68}
2.21—2.69*1
2.32—2.59*2

*1  :First digit below name plate mark * is 1.
*2  :First digit below name plate mark * is 2.
am3zzw00004101
am3zzw00004797


Circuit Open/Short Inspection

1.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

2.  Inspect for open/short circuit in the following wiring harnesses.

•  If there is open/short circuit, repair or replace wiring harness.

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Open circuit

•  Fuel temperature sensor terminal A and PCM terminal 50
•  Fuel temperature sensor terminal B and PCM terminal 70


Short circuit

•  Fuel temperature sensor terminal A and power supply
•  Fuel temperature sensor terminal A and body ground
•  Fuel temperature sensor terminal B and power supply