EGR VALVE INSPECTION [L3 Turbo]

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Resistance Inspection

Note

•  Perform the following test only when directed.

1.  Disconnect the negative battery cable.

2.  Inspect resistance of the EGR valve coils.

•  If not as specified, replace the EGR valve. (See EGR VALVE REMOVAL/INSTALLATION [L3 Turbo])

•  If as specified, carry out the “Circuit Open/Short Inspection”.

Terminals	Resistance (ohm)
C—E C—A D—B D—F	8—9

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Circuit Open/Short Inspection

1.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)

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

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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 2AM

―  EGR valve terminal B and PCM terminal 2AR

―  EGR valve terminal C or D and main relay terminal E

―  EGR valve terminal E and PCM terminal 2AQ

―  EGR valve terminal F and PCM terminal 2AN

Short circuit

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

―  EGR valve terminal A and power supply

―  EGR valve terminal A and body ground

―  EGR valve terminal B and power supply

―  EGR valve terminal B and body ground

―  EGR valve terminal C or D and body ground

―  EGR valve terminal E and power supply

―  EGR valve terminal E and body ground

―  EGR valve terminal F and power supply

―  EGR valve terminal F and body ground

3.  Remove the EGR valve, and inspect for any damage or clogging.

•  If there is no damage or clogging, replace the EGR valve. (See EGR VALVE REMOVAL/INSTALLATION [L3 Turbo])