Quote:
Originally posted by possumfat9
I have now replaced many things including knock sensors but still have the problem. Agin here is cut and paste from subaru tech manual.
Legacy
Key On ................ Red & Black/Red ............ 10-13 Volts
Engine On ............. Red & Black/Red ............ 13-14 Volts
Key On ............... Black & Black/Red ............ 0-0.3 Volt
Engine On ............ Black & Black/Red ......... 0.8-1.2 Volts
Key On .............. White & Black/Red ............. Zero Volts
Engine On ........... White & Black/Red ............. Zero Volts
Loyale
Key Off ............... Black & Ground ............... 0-10 Ohms
Key On ................. Red & Ground ............ 10 Volts Min.
Key On ................. White & Black .......... (1) .1-.5 Volt
SVX
Key On ................... Black/Red ............... 10-13 Volts
Key On ..................... White ................. 0-0.3 Volts
Key On ..................... Black .................. Zero Volts
Engine On ................ Black/Red ............... 13-14 Volts
Engine On .................. White ............... 0.8-1.2 Volts
Engine On .................. Black .................. Zero Volts
notice that svx does not show where to test to. ground- etc. In earlier post it was stated to test to ground. This would be impossible because if you look at wiring diagram blk/red wire is grounded, therefore therefore 10-14 volts will never sow up on this lead. Still trying to solve this problem. Thanks again
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Hi mate, it does look like the book colour code is wrong. In my book it says to test to the body of the MAF sensor itself, it is the ground point.
Key on eng. off, red to body=10 to 13V, White to body 0-0.3V
Engine on, red to body= 13-1, White to body 0.8-1.2V
The white wire is the signal, the red the supply. If something is going on here, either the red voltage will go down below supply, or the white signal voltage will drop towards 0V, when the problem occures.
All the best in your hunt.
Harvey.
