code 0012 PLEASE help

[yeti-gvr4]

I have code for 0012 still this happened one day out of the blue at a stop light about a month ago,

I've since then swapped in 3 different maf sensorsa
And had the same code on all of them.

I'm geussing its the plug on the harness side that's causing the ecu not to get a correct signal from the maf.

My question is how would I test if its the plug on the harness side?

Find the voltage wire and test for correct voltage?

Or do I need to measure for a difference at the ecu and plug

 

[datbmac]

At the maf harness you would check for power on pins 2(should have any where from 4.5v-5v), 3(should be battery voltage), 4(same as pin 2) and 6(sensor ground).2G MAF in a 1G TEL/GVR4 and at the ecu check pin 10(4.5v-5v) and pin 23(4.5v-5v) http://img.galantvr4.org/82000/82423-0-0-0.jpg