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Old 08-13-2012, 09:09 PM
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ECU

Hi, quick question. I've been having some trouble with my TPS and just recently it shorted out which left a wire with the insulation melting off of it. After this the car won't start. What I was thinking is that it may have fried the ECU, so I pulled back the carpet to check. When I had everything opened up I checked the wiring between the TPS and the ECU and there was continuity with very little resistance, so it seems intact with no visible damage on all 3 wires. So, what I was wondering is would the shorting out of the ECU pins kill the ECU and make the car not start? Any thoughts would be appreciated.
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Old 08-13-2012, 11:03 PM
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Re: ECU

It's possible. I don't know how likely, but you always run the risk of a short when something goes bad electrically. I don't know if there is any other methods of testing the ECU, but you could always swap in a confirmed working unit and see what you get.
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Old 08-14-2012, 08:32 AM
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Re: ECU

Do you know what caused the short to begin with?
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Old 08-15-2012, 07:20 AM
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Re: ECU

Did you post this issue on PreludePower?

If it shorted, it may have blown a fuse. First, remove the short, then change the fuse and reset ECU.

I know OBD0 has an ECU test harness. However, don't know if it will help you. Are you OBD0 or OBD1?
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Old 08-15-2012, 08:11 AM
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Re: ECU

I'd like to know who's got an OBD0 test harness. Got 3 ecu's and can't get the damn egr solenoid to ground.
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Old 08-16-2012, 03:09 AM
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Re: ECU

The short was not due to bad wiring; I was told that while attempting to measure the voltage across the +5V and Ground pins that the multimeter was unintentionally left in "current mode", which would allow the current to flow through the meter and, in this case, cause the short. As for fuses, the ECU and the Radio fuse seem to be perfectly fine.
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Old 08-18-2012, 08:58 PM
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Re: ECU

Quote:
Originally Posted by Lespaul59 View Post
I'd like to know who's got an OBD0 test harness. Got 3 ecu's and can't get the damn egr solenoid to ground.
I've got one. By chance the previous owner (Mike Jones the one and only) gave it to me when I bought the car. You may be able to buy an old stock from a Honda parts dealer. I haven't seen mine since I moved... it may be in a box somewhere.
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