B2200 88 how to test resistance in EGR Position Sensor and wheres the C terminal - Mazda Forum - Mazda Enthusiast Forums

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Old 02-04-2009, 06:21 PM
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Default B2200 88 how to test resistance in EGR Position Sensor and wheres the C terminal

I got diagnostic tree diagram for a EGR trouble code. One of the steps is to check for resistance in EGR position sensor. does anyone know how to test this?

Another step is that I need to check if there is 4.5-5.5V at C terminal of the EGR Position sensor connector? where is this located at?

I also need to measure a 1F terminal voltage of the emission control unit. Where would this be?

Appreciate any comments.
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Old 02-05-2009, 04:03 AM
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The EGR position sensor is the black plastic piece on top of the EGR valve. You can use an ohm meter to check the resistance between 2 of the terminals with it disconnected and opening and closing the EGR valve. Use a volt meter to check for voltage on one of the terminals, but bad EGR position sensors on those are common as dirt so i would just make sure the EGR valve is not getting vacuum at idle then replace it as it's a safe bet the position sensor is bad.
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