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