1: Where is the ECU located in an '89 CRX Si.
2: How do I run the CEL codes? Is there an adaptor for a jumper wire?

 

the ecu is under the passenger carpet, just like most civics.

theres no jumper wire on pre-obd ecu's.

if you get a check engine light, pull the carpet down and youll see a single red LED on the outer casing of the ecu, it will blink the corresponding number of times for the code you have in morose code fashion.

in the stickied FAQ topic at the top of this section, look up "ecu codes" for the threads

 

^ perfect answer.

OP, what have you been doing since 2004 to not know where the ECU is located?

 

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

OP, what have you been doing since 2004 to not know where the ECU is located? </TD></TR></TABLE>

LOL, he's been trying to locate it for years ...just kiddin'

 

well he probably has a newer civic and there behind the glovebox :-)

 

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

OP, what have you been doing since 2004 to not know where the ECU is located? </TD></TR></TABLE>

LOL. I've been driving a '94 Civic EX. I figured it was located in the passenger footwell, but I wanted to make sure before I went pulling carpet and panels apart.

Thanks guys.

 

at least you were smart about it. a lot of guys tear the whole car apart, and then ask the question.

 

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

at least you were smart about it. a lot of guys tear the whole car apart, and then ask the question. </TD></TR></TABLE>

Nor do they do any kind of search to find out first.

 

Okay. I located the ECU today. It flashed 17 times, but even before the car threw a CEL. When the CEL came on, it would just flash 17 times, pause and then flash 17 times over and over. Some kid showed me where the jumper wire connector is on the driver side under the hood. I got a small wire, but it still just flashed 17 times. I have no idea as to why this is happening. Could I have an ECU issue?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by O RLY &raquo;</TD></TR><TR><TD CLASS="quote">Okay. I located the ECU today. It flashed 17 times, but even before the car threw a CEL. When the CEL came on, it would just flash 17 times, pause and then flash 17 times over and over. Some kid showed me where the jumper wire connector is on the driver side under the hood. I got a small wire, but it still just flashed 17 times. I have no idea as to why this is happening. Could I have an ECU issue?</TD></TR></TABLE>

You did not read this...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doublethink &raquo;</TD></TR><TR><TD CLASS="quote">theres no jumper wire on pre-obd ecu's.

if you get a check engine light, pull the carpet down and youll see a single red LED on the outer casing of the ecu, it will blink the corresponding number of times for the code you have in morose code fashion.

in the stickied FAQ topic at the top of this section, look up "ecu codes" for the threads</TD></TR></TABLE>


Now check this....
https://honda-tech.com/zero...age=3

 

I can read. You're failing to understand what I am saying. The ECU just flashes short 17 times in a row. That's not a code. I think there is something wrong with the wiring or maybe ECU.