FUEL INJECTOR INSPECTION [MZR-CD (RF Turbo)]

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Resistance Inspection

  Note
  • Perform the following test only when directed.

1. Disconnect the negative battery cable.

2. Disconnect the fuel injector connectors.

3. Measure the resistance of the fuel injector using an ohmmeter.

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  • If not as specified, replace the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
  • If as specified, carry out the “Circuit Open/Short Inspection”.

  Resistance (without circle mark)

  Approx. 0.45 ohms

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  Resistance (with circle mark)

  Approx. 0.47 ohms

Circuit Open/Short Inspection

1. Disconnect the PCM connector.

2. Inspect the following wiring harnesses for open or short (continuity check).

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Open circuit
• If there is no continuity, the circuit is open. Repair or replace the wiring harness.

  ― No.1 cylinder fuel injector terminal B and PCM terminal 42.
  ― No.2 cylinder fuel injector terminal B and PCM terminal 21.
  ― No.3 cylinder fuel injector terminal B and PCM terminal 23.
  ― No.4 cylinder fuel injector terminal B and PCM terminal 40.
  ― No.1 cylinder fuel injector terminal A and PCM terminal 4.
  ― No.2 cylinder fuel injector terminal A and PCM terminal 4.
  ― No.3 cylinder fuel injector terminal A and PCM terminal 4.
  ― No.4 cylinder fuel injector terminal A and PCM terminal 4.

Short circuit
• If there is continuity, the circuit is short. Repair or replace the wiring harness.

  ― No.1 cylinder fuel injector terminal B and body ground.
  ― No.2 cylinder fuel injector terminal B and body ground.
  ― No.3 cylinder fuel injector terminal B and body ground.
  ― No.4 cylinder fuel injector terminal B and body ground.
  ― No.1 cylinder fuel injector terminal A and body ground.
  ― No.2 cylinder fuel injector terminal A and body ground.
  ― No.3 cylinder fuel injector terminal A and body ground.
  ― No.4 cylinder fuel injector terminal A and body ground.
  ― No.1 cylinder fuel injector terminal B and power supply.
  ― No.2 cylinder fuel injector terminal B and power supply.
  ― No.3 cylinder fuel injector terminal B and power supply.
  ― No.4 cylinder fuel injector terminal B and power supply.
  ― No.1 cylinder fuel injector terminal A and power supply.
  ― No.2 cylinder fuel injector terminal A and power supply.
  ― No.3 cylinder fuel injector terminal A and power supply.
  ― No.4 cylinder fuel injector terminal A and power supply.