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

id0140f1801300

  Note

  • Perform the following test only when directed.

## Voltage Inspection

1. Start the engine and warm up the engine completely.

2. Measure the voltage between fuel pressure sensor terminals A and B using a voltmeter at idle.

  • If not as specified, perform the "Circuit Open/Short Inspection".

  - If there is no open/short circuit, replace the common rail.

Specification

  1.4-1.7 V

3. Turn off the engine and wait three minutes.

4. Turn the engine switch to ON.

5. Measure the voltage between fuel pressure sensor terminals A and B using a voltmeter.

  • If not as specified, perform the "Circuit Open/Short Inspection".

  - If there is no open/short circuit, replace the common rail.

Specification

  0.9-1.1 V

## Circuit Open/Short Inspection

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

2. Disconnect the fuel pressure sensor connector.

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

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

### Open circuit

  • Fuel pressure sensor terminal A and PCM terminal 69
  • Fuel pressure sensor terminal B and PCM terminal 48
  • Fuel pressure sensor terminal C and PCM terminal 44

### Short circuit

  • Fuel pressure sensor terminal A and power supply
  • Fuel pressure sensor terminal B and power supply
  • Fuel pressure sensor terminal B and body ground
  • Fuel pressure sensor terminal C and power supply
  • Fuel pressure sensor terminal C and body ground