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

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)])

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)])

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.