EGR VALVE INSPECTION [L8, LF]

Note

• Perform the following procedure only when directed.

On-vehicle Inspection

1. Verify that the buzzing sound (valve operation sound) is heard from the EGR valve when engine cranking.

• If the buzzing sound is not heard, perform the resistance inspection.

Resistance Inspection

1. Disconnect the battery cover.

2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [L8, LF].)

3. Disconnect the EGR valve connector. (See EGR VALVE REMOVAL/INSTALLATION [L8, LF].)

4. Measure the resistance between the EGR valve terminals.

• If within the specification, perform out the "Circuit Open/Short Inspection".

• If not within the specification, replace the EGR valve. (See EGR VALVE REMOVAL/INSTALLATION [L8, LF].)

Standard

Terminal	Resistance (ohm)
C-E C-A D-B D-F	12-16

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [L8, LF].)

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

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

- EGR valve terminal A and PCM terminal 2G

- EGR valve terminal B and PCM terminal 2L

- EGR valve terminal E and PCM terminal 2K

- EGR valve terminal F and PCM terminal 2H

- EGR valve terminal C and main relay

- EGR valve terminal D and main relay

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

- EGR valve terminal A and body ground

- EGR valve terminal A and power supply

- EGR valve terminal B and body ground

- EGR valve terminal B and power supply

- EGR valve terminal C and body ground

- EGR valve terminal D and body ground

- EGR valve terminal E and body ground

- EGR valve terminal E and power supply

- EGR valve terminal F and body ground

- EGR valve terminal F and power supply