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EGR VALVE POSITION SENSOR INSPECTION [MZR-CD (RF Turbo)]

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  Note

  • Perform the following test only when directed.

## Voltage Inspection

1. Turn the engine switch to ON.

2. Monitor the EGRP PID using the WDS or equivalent.

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

  - If there is no open/short circuit, replace the EGR valve. (See EGR VALVE REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])

EGRP PID

  0.0-1.0 V

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

4. Monitor the EGRP PID using the WDS or equivalent at idle.

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

  - If there is no open/short circuit, replace the EGR valve. (See EGR VALVE REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])

EGRP PID

  Approx. 2 V

## Circuit Open/Short Inspection

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

2. Disconnect the EGR valve 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

  • EGR valve terminal A and PCM terminal 45
  • EGR valve terminal C and PCM terminal 70
  • EGR valve terminal E and PCM terminal 53

### Short circuit

  • EGR valve terminal A and power circuit.
  • EGR valve terminal A and body ground.
  • EGR valve terminal C and power circuit.
  • EGR valve terminal E and power circuit.
  • EGR valve terminal E and body ground.