Diagnostic issue - ClubWRX Forum - Subaru Impreza WRX and STi Community and Forums

bluedevil21 · 07-05-2009, 12:58 AM

i got an 02 wrx...when i first got the car it wasn't throwing out codes, but when i checked out under the steering column there was a disconnected wire, when connected it threw out a code, pretty sure its the o2 sensor, but idk...NEED ADVICE

**Donkey** · 07-05-2009, 07:07 AM

..........disconnect the wire.Some of those connectors under the dash are diagnostic connectors for the ECU.They are only ment to be connected to access the ECU.

wrxtreme06 · 07-05-2009, 07:47 AM

there are "test mode connectors" under the driver steering column. these are supposed to be connected to flash your ECU. they should be green in color & when hooked up put your car in test mode.

if you have a 2.0L, there is another initialization connector that is translucent white (located near the green ones). if you have an 02 wrx, it connects to a blue plug. if it is 03-05's there is a solid white one that the translucent plug goes into.

as donkey said, if any of these are plugged together, unplug them

07-05-2009, 12:58 AM	#1 (permalink)
bluedevil21 Registered User Join Date: May 2009 Posts: 21	Diagnostic issue i got an 02 wrx...when i first got the car it wasn't throwing out codes, but when i checked out under the steering column there was a disconnected wire, when connected it threw out a code, pretty sure its the o2 sensor, but idk...NEED ADVICE

07-05-2009, 07:07 AM	#2 (permalink)
Donkey Reincarnated Stalin of WRX tuning Join Date: Apr 2005 Location: Da boonies Posts: 2,743	..........disconnect the wire.Some of those connectors under the dash are diagnostic connectors for the ECU.They are only ment to be connected to access the ECU. __________________ My Mods My Pics

07-05-2009, 07:47 AM	#3 (permalink)
wrxtreme06 Sammich Makin Pwincess #1 Join Date: May 2007 Location: orlando, fl Posts: 7,361	there are "test mode connectors" under the driver steering column. these are supposed to be connected to flash your ECU. they should be green in color & when hooked up put your car in test mode. if you have a 2.0L, there is another initialization connector that is translucent white (located near the green ones). if you have an 02 wrx, it connects to a blue plug. if it is 03-05's there is a solid white one that the translucent plug goes into. as donkey said, if any of these are plugged together, unplug them __________________ your friendly, neighborhood subaru girl 06 wrx impreza: cobb stage II! // 1991 toyota aristo; totally stock & JDM, y0! myspace; facebook hawk-eye alliance #1111 // wingl3ss @ll!ance #17 Last edited by wrxtreme06; 07-05-2009 at 07:50 AM. Reason: added more info

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