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Old 06-11-2015, 12:09 AM   #1 (permalink)
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Default DENSO Unit? ECM?

I've got an '88 Samurai at the shop now . Won't start. Engine turns but no sparks. Guy here says that wires from distributor are all going through a unit under the passenger-side dash labeled DENSO 077200-0970 and it needs to be replaced along with the wiring harness that apparently has rusted together somehow. He thinks it's the ECM.

A google search returns nothing for that exact part number but there are some hits for DENSO 077200-xxxx but these are AC control boxes.

Any clues , tips , or ideas for getting this Sami back in running order?
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Old 06-11-2015, 06:51 AM   #2 (permalink)
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I would expect an 88 to have a stand-alone distributor - no ECM required. I have no idea why the distributor would be wired to the AC control unit.
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Old 06-12-2015, 02:11 PM   #3 (permalink)
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Just spoke with the mechanic. He was mistaken about the DENSO unit.

He's now pointing to another neighboring unit that he still insists is the ECM. The brand is Python and the part number is 139-118 03049(9). The last number is scratched away but it looks like a 9. Google returns nothing for this though.

If it is the ECM that needs replacing, would this one work? 1986 1989 Suzuki Samurai 1 3 Engine Brain Box Computer ECM Control Module | eBay

I might also need a wiring harness... Ideas here?
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Old 06-12-2015, 02:13 PM   #4 (permalink)
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Might be pertinent to know that this Sami has a 1.6 L engine swap from a Tracker, I believe.
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Old 06-12-2015, 02:46 PM   #5 (permalink)
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The 1.6 Track/Kick ECMs were made by Mitsubishi and have a part number starting 33920-. The unknown module may be an aftermarket immobiliser.
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Old 06-17-2015, 02:48 AM   #6 (permalink)
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Here's a pic of what he's now pointing to.... looks like a Mitsubishi unit....Could it be the ECM?

http://imgur.com/wxKN870
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Old 06-17-2015, 03:04 AM   #7 (permalink)
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Yes that is the ECU, its been rebuilt by a company called Python at some time. On the back of the ECU there will be a sticker with the proper part numbers on it. You will need to check those because you may have a Samurai ECU but it could have been modified to use the Track/Kick ECU.
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Old 06-23-2015, 07:21 PM   #8 (permalink)
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Ok, ECU is out but no part numbers besides the Re-manufactured sticker from Python...

Here's a picture of the engine in case it's helpful.
I don't really know where to go from here.

Imgur
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Old 06-24-2015, 04:14 AM   #9 (permalink)
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If you open the lid of the ECU then there will be a part number of the circuit board, there should also be a number stamped on the top of the connector and the large square chip will have a number Exxx. If you post those numbers then I should be able to identify the ECU.
Check around the cylindrical capacitors for signs of damage, the caps can leak and eat away at the board.
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Old 06-24-2015, 01:02 PM   #10 (permalink)
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Circuit board number : JE331B604A

White chip: E528A

Connector: ??? (which connector do you speak of?)

Blue cylindrical things (capacitors?) labeled "50V XXuF" look fine, no signs of leakage or damage

Heres a picture:
http://imgur.com/ewfUGS2

Thanks for your help btw, really appreciate it
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