EGR VALVE POSITION SENSOR INSPECTION [WL-C, WE-C]

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Note

•  Perform the following inspection only when directed.

Resistance Inspection

1.  Disconnect the EGR valve position sensor connector.

2.  Measure the resistance between EGR valve position sensor connector terminals A and B.

•  If not within the specification, replace the EGR valve.

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

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Voltage Inspection

1.  Turn the engine switch to the ON position (Engine off).

2.  Measure the voltage between EGR valve position sensor connector terminal C and body ground.

•  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 [WL-C, WE-C].)

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

4.  Measure the voltage between EGR valve position sensor connector terminal C and body ground.

•  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 [WL-C, WE-C].)

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CIrcuit Open/Short Inspection

1.  Disconnect the EGR valve position sensor connector.

2.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [WL-C, WE-C].)

3.  Inspect for an open or short circuit in the following wiring harnesses.

•  If there is an open or short circuit, repair or replace wiring harnesses.

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