MAF sensor resistance readings

[CManT1914]

When doing a resistance check on the MAF sensor, what is an acceptable reading range? Also, using the plug that goes directly on the MAF itself, what terminals do I need to probe to get a reading? I couldn't get a reading earlier, it just kept saying "1".

 

[mo_dingo]

One pin is 5V constant, one is ground, another is your sig rtn. I can't remember what the other is.

The best way to test the MAf is to probe the sig rtn, and start the car. You should see less than 5V, but more than 0. If you see 5, the MAF sensor is shorted out, if you see 0, the sensor is open. 5 or 0 means replace sensor.

You should see like .8V or something like that at idle, and 2 or so when you rev the motor.
Scott

 

[CManT1914]

I tested the voltage and it came out good, but I was reading the Hayne's manual, and it said to check the resistance readings next, but it didn't give me any numbers or anything.