NOTE:
Perform the following procedure only when directed.
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.
1. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION [LF].)
2. Disconnect the battery cover.
3. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [LF].)
4. Disconnect the EGR valve connector. (See EGR VALVE REMOVAL/INSTALLATION [LF].)
5. Measure the resistance between the EGR valve terminals.
Standard
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 [LF].)
Terminal
Resistance (ohm)
C—E
C—A
D—B
D—F
12—16
1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [LF].)
2. Inspect the following wiring harnesses for open or short circuit (continuity check).
Open circuit
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
Short circuit
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