Nigs help with OBD issues
08-01-2006, 11:20 PM
#1
3.0 BAR
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Join Date: Aug 2005
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Nigs help with OBD issues
Ok i'm running a turbo d in my 2000 civic, so i'm running a chipped p28. Obviosly i can't hook a scan tool up to the OBD2 port. So i was thinking of soldering an obd1 honda dlc connector into the conversion harness. That way i could hook up an obd 1 honda scanner adaptor and be able to do cool things.
Only problem, i'm not entirely sure which wires to hook up to. I've looked at a ton of diagrams and i've found two wires so far, light blue, and a green/wht. Now i'm assuming that the green and white is a ground since it's also shared by other sensors, and the light blue is a communication wire. However i can't find anything about the 3rd wire. There are 3 wires right? Also what pins will the third wire hook in to? I've found that the light blue wire is pin D7 and the green/white is D22.
Only problem, i'm not entirely sure which wires to hook up to. I've looked at a ton of diagrams and i've found two wires so far, light blue, and a green/wht. Now i'm assuming that the green and white is a ground since it's also shared by other sensors, and the light blue is a communication wire. However i can't find anything about the 3rd wire. There are 3 wires right? Also what pins will the third wire hook in to? I've found that the light blue wire is pin D7 and the green/white is D22.
08-01-2006, 11:53 PM
#3
3.0 BAR
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Re: Nigs help with OBD issues
Originally Posted by Paperchaser013
what is so hard about jumping 2 wires and counting a flashing light?
But i'm going to school at NE tech for auto technology and i wanna hook my car up to a few scan tools there to learn the readings of the different sensors and play with some other things. I always want to see what my map sensor is reading for boost because i know my boost gauge is out of calibration.
08-02-2006, 05:35 PM
#4
3.0 BAR
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Re: Nigs help with OBD issues
ok well in my quest to hook my obd1 ecu up to a scan tool, i found out that pin D7 which is supposed to be the light blue wire that hooks into the DLC (Txd/Rxd wire) connects to my jumper harness at pin 26. That wire supposedly detects an ECT signal. Now i'm sure there's a reason for it, assuming i have all my pins correct. However i was looking at empty spots in each side of the harness, and i found that the knock sensor wire from the car side of the harness is connected to the brake switch pin on the ecu. WTF. I can understand them not connecting it, incase you're not using a vtec ecu with the harness, but could i just unplug it from the brake switch pin, and plug it in where the knock sensor is supposed to go?
If anybody knows anything about jumper harnesses please PM me.
If anybody knows anything about jumper harnesses please PM me.
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