Are my SAFC 2 voltage readings correct?

shlounek

New Member
Jan 30, 2007
24
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Michigan
Well my engine is been acting wierd i get fuel cut around 3000 rpm or if i floor it. I checked all other sensors and came to the conclusion that it either ECU or a bad wire somewhere.

So I was like let me test the MAP, and thigs dont seem right.

with the MAP unplugged and the car on the ON key but position but not running
i am getting a

MAP Side
5 Volts on Blue wire i think
4.67 Volts on the green wire
0.01 ohm reading on the ground Brown wire

Now on the SAFC side with map still unplugged i am getting
Init 1 0.015V (which is the MAP sensor reading on SAFC)
Init 2 0.005V (which is nothing since i have only one sensor)
Throttle: 0.555V (Throttle Position)

NOW using my ohm meter if i touch the ground with the +5V i am getting 0.001 reading, if i touch the Green wire with the Ground i am getting 0.153 ohm reading
are my grounds touching the + wires somewhere in the circuit


NOW Step 2 with the MAP plugged in and car in the ON position but not running I am getting:
SAFC is reading
Init 1: 2.520V (MAP sensor)
Throttle: 0.555V

Car running but idling at 700 rpm
SAFC is reading
Init 1: 1.395V (Map sensor)
Throttle: 0.555V

I floor it to where it cuts at
Init 1 reads: 2.45V to 2.75V (approx)

Can anyone please check there SAFC Voltage settings or the voltage reading on there MAP with MAP unplugged etc.

I think there is something wrong with the MAP Wires