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How to read ecu codes with OBD1 conversion?

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Old 05-27-2004, 09:28 AM
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Default How to read ecu codes with OBD1 conversion?

For you guys that have been going from non OBD to OBD1, how do you go about reading engines codes once an EF has been upgraded to the newer system?
Does it actually flash the engine light on the dash like a newer Honda would?
Old 05-27-2004, 09:35 AM
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Default Re: How to read ecu codes with OBD1 conversion? (Deetz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Deetz &raquo;</TD></TR><TR><TD CLASS="quote">For you guys that have been going from non OBD to OBD1, how do you go about reading engines codes once an EF has been upgraded to the newer system?
Does it actually flash the engine light on the dash like a newer Honda would?</TD></TR></TABLE>

yes, but depending on the conversion harness you might have to ground a particular wire to read codes
Old 05-27-2004, 09:49 AM
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Default Re: How to read ecu codes with OBD1 conversion? (APEX CRX)

I have the Boomslang harness and all you have to do is ground the wire at D4 and it will make the CEL flash the code.
Old 05-27-2004, 10:00 AM
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Default Re: How to read ecu codes with OBD1 conversion? (Deetz)

Mine is grounded with a toggle switch to open and close the circuit.
Old 05-27-2004, 11:36 AM
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Default Re: How to read ecu codes with OBD1 conversion? (1st-hybrid)

I have a blown90hatch harness, and I have a dignostic plug by the ecu. you just put a paperclip into the plug and read the flashes off of the cel. Just like my 00si.
Old 05-27-2004, 11:49 AM
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This is an awesome topic...I'm switching to OBD1 and was wondering the same thing.
Old 05-27-2004, 11:51 AM
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Default Re: (pisetup)

ok so I'm going to assume that 88-89 you will have to ground a wire to make it flash and on the 90-91 there is a plug by the ECU or did you have to add it?
Old 05-27-2004, 12:04 PM
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Default Re: (wickedEFguy)

Im using a 93 GSR ecu and there is a plug on the engine harness right beside the drivers side motor mount. Remove the cover and put in a piece of wire on both sides and it will blink the code through the CEL just like an OBD1 car
Old 05-27-2004, 12:30 PM
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Default Re: (HybridHatch88)

is that the same for a CRX?

I know that on 88-89 you do this but what about 90-91
Old 05-27-2004, 12:37 PM
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Default Re: (wickedEFguy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wickedEFguy &raquo;</TD></TR><TR><TD CLASS="quote">ok so I'm going to assume that 88-89</TD></TR></TABLE>

88-89, that plug is in the engine bay by the drivers side shock tower.. thats what i use to check m'codes.
Old 05-27-2004, 12:54 PM
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Default Re: (2point2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2point2 &raquo;</TD></TR><TR><TD CLASS="quote">

88-89, that plug is in the engine bay by the drivers side shock tower.. thats what i use to check m'codes.</TD></TR></TABLE>

Me too, good ol 88 standard
Old 05-27-2004, 12:55 PM
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Default Re: (2point2)

my car is a 91, I had a plug like that but it was on my passenger side shock tower. That was extended inside the cabin I believe because it is not there after the jdm d15b swap.
Old 05-27-2004, 01:01 PM
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Default Re: (HybridHatch88)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HybridHatch88 &raquo;</TD></TR><TR><TD CLASS="quote">

Me too, good ol 88 standard </TD></TR></TABLE>

i love my black sheep crx
Old 05-27-2004, 01:06 PM
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Default Re: (2point2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2point2 &raquo;</TD></TR><TR><TD CLASS="quote">

i love my black sheep crx </TD></TR></TABLE>

What was the curb of your car from the factory?
Old 05-27-2004, 01:12 PM
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Default Re: (HybridHatch88)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HybridHatch88 &raquo;</TD></TR><TR><TD CLASS="quote">

What was the curb of your car from the factory?</TD></TR></TABLE>
Old 05-27-2004, 05:30 PM
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Default Re: (HybridHatch88)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HybridHatch88 &raquo;</TD></TR><TR><TD CLASS="quote">

What was the curb of your car from the factory?</TD></TR></TABLE>

curb? is that written on the door vin plate?
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