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Air Temp Sensor Continuity Failure Mystery (1975 280z)


rsperegrin1

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Problem:

I checked continuity between terminals 6 and 27 at the ECU - it failed

Diagnosing Attempts:

1) I checked the continuity between terminal 6 and 27 on the Air Flow meter - it passes (sensor is good)

2) I jumped terminal 6 and 27 on the harness connector and checked the continuity - it passes (harness from ECU to Air Flow meter is good)

Therefore it must be the corrosion between the harness and the AFM.

3) I replaced the connector on the harness with a brand new connector and all new terminals. I cleaned the male terminals on the AFM and lubed them up with dielectric grease. And it FAILED continuity between terminals 6 and 27 when measured at the ECU.

What is going on? Any ideas?

Thank you,

Robert

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