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  #1  
Old 03-31-2012, 01:03 PM
Slash200 Slash200 is offline
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Join Date: Jan 2011
Location: Germany
Posts: 43
Default Supra mk3: error code 31 - MAF

Hello,

first: i'm driving with speed density
I rebuild the car over the winter and today i tried to start the engine:
In runs not really good, when open the throttle the engine stalls and dies.
The errorcode is 31. I think this error normally means the MAF is missing. I think there is a wiring problem with my Maft pro from the maf output to the ecu. But on the wiring i changed nothing. Does the Maft pro lose it's settings when not connected to the battery? ( i thought it is a flash memory)
Which wire is the cable that sends the MAF signal to the ECU? maybe there is a bad contact? It's a year ago when i made the wiring and I forgot most about ist

best regards

Slash200
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  #2  
Old 03-31-2012, 04:29 PM
TurboBob TurboBob is offline
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Join Date: Mar 2004
Location: Near Detroit
Posts: 7,625
Default

the green wire from the 10 pin connector is the MAF signal.

Also make sure the other connections are working. You can check them by looking at the LCD, on the sensor monitor screen. Check RPM, MP, TPS, FO, AFL

The unit does not lose its settings when the battery is disconnected, the settings are saved to flash.

Bob
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