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Old 08-13-2011, 11:30 PM   #1 (permalink)
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Default New Samurai owner CEL help

I just bought a 1994 Samurai as a project and so far I love it. Everything's working so far except a few oil leaks but I think a couple new gasket's will fix that.

The problem i'm having is the CEL is on and when I put a fuse in the DIAG OK slot on the fuse panel the light didn't flash at all. an article I read says a steady on is an ECM problem, then I noticed the problem the fuel injected samurais have leaky capacitors inside the ECM. I'm hoping thats not the problem although it's something I think I may be able to fix.

My question is am I reading the code correctly because I read about people having to use jumpers to read codes? Also if the capacitor was leaking fluid causing the ECM to go bad, wouldn't it shut off abruptly instead of driving fine and throwing a code?

What could the problem be with the ECM and how do I fix it?


Off Topic: I need to fix the swaying from side to side at 45+ MPH. would new bushings help fix this or a steering stabilizer? I've been using this to get to work on the highway and I just about crap my pants when I hit a bump at 65MPH and sway all over the place.
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Old 08-14-2011, 07:55 AM   #2 (permalink)
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my NAG Lamp stuck ON page? The kick-fix site is a great reference for the Samurai EFI trucks as everything is the same on the 8v engines except for the engine size.

On the swaying, check to make sure that you have a sway bar. Also check to see if your shocks and steering stabilizer are in good condition. My guess is they are not. The sway bar is often removed to increase suspension flex, but the ride can be hairy if you are not used to it.
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Old 08-14-2011, 09:38 AM   #3 (permalink)
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Yea I found the switch and I already tried switching it but the light stays on thats why I took the next step into reading the codes. It stays on so i'm guessing it's the ECM. I guess what i'm looking for is a how-to for fixing the ecm or finding out whats causing the ecm to throw a code before I fork out the money to rebuild the ecm to only find out it was a grounding issue.
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Old 08-14-2011, 10:33 AM   #4 (permalink)
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On the 94' model you need to jump the connector. With the key switch OFF use a small wire, (I use a paper clip) to jump the #2 and #3 terminals on the plug. The plug is located next to the battery on the firewall. It's a small white squire connector just hanging there. Turn the key switch to ON and the code should flash the check engine light.
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Old 08-14-2011, 10:37 AM   #5 (permalink)
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Another link from the same site re: CEL

CEL INDEX
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Old 08-14-2011, 11:51 AM   #6 (permalink)
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Just took a look under the hood and I didn't see and white boxes near the battery on the firewall, in fact I didn't see any white boxes anywhere on the car.
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Old 08-14-2011, 12:37 PM   #7 (permalink)
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It's not a box. It's just an open plug with 4 wires running into it. Mine is at the firewall directly behind the battery. You might have to move the battery to find it. It might also have a rubber boot covering the end to keep moisture out.
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Old 08-14-2011, 12:47 PM   #8 (permalink)
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Here is the white test connector on my '91.

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Old 08-14-2011, 01:40 PM   #9 (permalink)
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Was finally able to get a code!!! 31 the MAP sensor pressure too high. How do I fix this?
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Old 08-14-2011, 02:42 PM   #10 (permalink)
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The TBI supplement for the FSM will be the 2nd link.

.:Suzuki Download Archive:.

Sometimes this site exceeds their monthly bandwidth, so if that is the case, please reply back and I can post the links to my website that has it broken out into 5 separate pdfs due to its large size.

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