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

BME011413250204

  Note

  • For the "Type A" and "Type B" specifications explained in the following, refer to "Specification Identification" to identify the service specification. (See SPECIFICATION IDENTIFICATION.)

## Resistance Inspection

  Note

Type A

  • Perform the following test only when directed.
  • Perform "Correction after Parts Installation" after replacing the fuel injector. (See Correction after Parts Installation.)

Type B

  • Perform the following test only when directed.
  • For fuel injector replacement, set up the WDS or equivalent and perform the following:

  - "Fuel injector code program" (See FUEL INJECTOR CODE PROGRAM [MZR-CD (RF Turbo)]
  - "Correction after Parts Installation" (See Correction after Parts Installation.)

1. Disconnect the negative battery cable.

2. Disconnect the fuel injector connectors.

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

  • 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

  approx. 0.45 ohm

## Circuit Open/Short Inspection [Type A]

1. Disconnect the IDM connector.

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

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

  - No.1 cylinder calibration resistor terminal B (harness-side) and IDM terminal 1E.
  - No.2 cylinder calibration resistor terminal B (harness-side) and IDM terminal 1G.
  - No.3 cylinder calibration resistor terminal B (harness-side) and IDM terminal 1H.
  - No.4 cylinder calibration resistor terminal B (harness-side) and IDM terminal 1F.
  - No.1 cylinder calibration resistor terminal D (harness-side) and IDM terminal 1D.
  - No.2 cylinder calibration resistor terminal D (harness-side) and IDM terminal 1C.
  - No.3 cylinder calibration resistor terminal D (harness-side) and IDM terminal 1C.
  - No.4 cylinder calibration resistor terminal D (harness-side) and IDM terminal 1D.

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

  - No.1 cylinder calibration resistor terminal B (harness-side) and GND.
  - No.2 cylinder calibration resistor terminal B (harness-side) and GND.
  - No.3 cylinder calibration resistor terminal B (harness-side) and GND.
  - No.4 cylinder calibration resistor terminal B (harness-side) and GND.
  - No.1 cylinder calibration resistor terminal D (harness-side) and GND.
  - No.2 cylinder calibration resistor terminal D (harness-side) and GND.
  - No.3 cylinder calibration resistor terminal D (harness-side) and GND.
  - No.4 cylinder calibration resistor terminal D (harness-side) and GND.
  - No.1 cylinder calibration resistor terminal B (harness-side) and power supply.
  - No.2 cylinder calibration resistor terminal B (harness-side) and power supply.
  - No.3 cylinder calibration resistor terminal B (harness-side) and power supply.
  - No.4 cylinder calibration resistor terminal B (harness- side) and power supply.
  - No.1 cylinder calibration resistor terminal D (harness-side) and power supply.
  - No.2 cylinder calibration resistor terminal D (harness-side) and power supply.
  - No.3 cylinder calibration resistor terminal D (harness-side) and power supply.
  - No.4 cylinder calibration resistor terminal D (harness- side) and power supply.

## Circuit Open/Short Inspection [Type B]

1. Disconnect the IDM connector.

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

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

  - No.1 cylinder fuel injector terminal B (harness-side) and IDM terminal 1E.
  - No.2 cylinder fuel injector terminal B (harness-side) and IDM terminal 1G.
  - No.3 cylinder fuel injector terminal B (harness-side) and IDM terminal 1H.
  - No.4 cylinder fuel injector terminal B (harness-side) and IDM terminal 1F.
  - No.1 cylinder fuel injector terminal A (harness-side) and IDM terminal 1D.
  - No.2 cylinder fuel injector terminal A (harness-side) and IDM terminal 1C.
  - No.3 cylinder fuel injector terminal A (harness-side) and IDM terminal 1C.
  - No.4 cylinder fuel injector terminal A (harness-side) and IDM terminal 1D

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

  - No.1 cylinder fuel injector terminal B (harness-side) and GND.
  - No.2 cylinder fuel injector terminal B (harness-side) and GND.
  - No.3 cylinder fuel injector terminal B (harness-side) and GND.
  - No.4 cylinder fuel injector terminal B (harness-side) and GND.
  - No.1 cylinder fuel injector terminal A (harness-side) and GND.
  - No.2 cylinder fuel injector terminal A (harness-side) and GND.
  - No.3 cylinder fuel injector terminal A (harness-side) and GND.
  - No.4 cylinder fuel injector terminal A (harness-side) and GND.
  - No.1 cylinder fuel injector terminal B (harness-side) and power supply.
  - No.2 cylinder fuel injector terminal B (harness-side) and power supply.
  - No.3 cylinder fuel injector terminal B (harness-side) and power supply.
  - No.4 cylinder fuel injector terminal B (harness- side) and power supply.
  - No.1 cylinder fuel injector terminal A (harness-side) and power supply.
  - No.2 cylinder fuel injector terminal A (harness-side) and power supply.
  - No.3 cylinder fuel injector terminal A (harness-side) and power supply.
  - No.4 cylinder fuel injector terminal A (harness- side) and power supply.