1992 Honda Civic ECM Problems

1992 HONDA CIVIC
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JUSTPHILL
  • MEMBER
  • 2 POSTS
Electrical problem
1992 Honda Civic 4 cyl Front Wheel Drive Automatic

I have replaced the ECM on my Honda only to have it burnt up within 10 minutes of the install. It warmed up and then just quit. I removed the new ECM and it was damaged just like the first. I have a few pictures that show the capacitor that blew. I just need a little help figuring which pins they go to in the B wiring harness to the ECM.[img:183ad597ed]http://www.2carpros.com/forum/automotive_pictures/363122_SANY2503_1.jpg[/img:183ad597ed]
[img:183ad597ed]http://www.2carpros.com/forum/automotive_pictures/363122_SANY2501_1.jpg[/img:183ad597ed]
[img:183ad597ed]http://www.2carpros.com/forum/automotive_pictures/363122_SANY2502_1.jpg[/img:183ad597ed]
[img:183ad597ed]http://www.2carpros.com/forum/automotive_pictures/363122_SANY2504_1.jpg[/img:183ad597ed]
[img:183ad597ed]http://www.2carpros.com/forum/automotive_pictures/363122_SANY2505_1.jpg[/img:183ad597ed]
Jun 14, 2009 at 4:00 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Hi JustPhill,

From the diagra it is not easy to determine which pin it is connected to as the burnt mark is rather bad and enchroaches onto other printed circuits.

Prior to it happening, what were the symptoms of the problem?

Were you able to retrieve and trouble codes?

Can the engine still start?

Try pluggin in the ECM and check if yu cna retrieve any codes.

Next alternative is to get another ECM to check its circuit.
Jun 14, 2009 at 9:30 AM
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JUSTPHILL
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Thanks for the response, I wasn't able to retrieve any codes at all. It just shut off when I was driving home from work. It won't start. And the gear indicator on the dash just has D3 on all the time with it plugged in
The other circuits it encroaches on are the D3 and D4 indicator circuits and the capacitor itself is connected to connector B pin 1 which is positive battery power. Any suggestions would be greatly appreciated.
Jun 15, 2009 at 1:50 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Are you able to identify the terminal pins that affected by the burnout?

How many pins are affected?

With ECM plugged-in, you are not able to retrieve any codes by jumping the SCS?

D3 and D4 circuit showing could be a fault with the gear shift position indicator switch. Remove the console and check switch for shorting.
Jun 16, 2009 at 3:03 AM
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