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Evan46
05-17-2020, 11:21 AM
I have a 2008 Supra launch worlds edition. I had a bad connection to the starter. Like an idiot I did not disconnect the battery when fixing and arked it. Now when I turn the key to on my gauges turn on but all read 0. and my fuel pump gets no power. Engine will turn over but no fuel to start. I checked all fuses that I could find even the rear engine mounted fuses. Any advice would be appreciated.
Thank you.
JSPulliam21
05-17-2020, 01:01 PM
How did you check the fuses?

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Evan46
05-17-2020, 02:23 PM
I pulled them out and looked at them.
Turbinesurgeon
05-17-2020, 02:26 PM
What about the large 50a resettable CB usually located near the ECM?


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Evan46
05-17-2020, 02:47 PM
Are these what you are referring to?


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Evan46
05-17-2020, 02:47 PM
https://uploads.tapatalk-cdn.com/20200517/3771b031c30713b68d9879053fa37a97.jpg
https://uploads.tapatalk-cdn.com/20200517/9ad93b188883eac72c7334ab9a0a5c28.jpg


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JSPulliam21
05-17-2020, 03:01 PM
Pretty sure that's what he's talking about. You may want to check those fuses with a meter. I've had them blow where you couldn't see it in the transparent window, but the meter showed it open.

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Evan46
05-17-2020, 03:44 PM
Fuses are good just to double check I replaced all three. Still no go.


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JSPulliam21
05-17-2020, 03:52 PM
Do you have 12v at the fuel pump with the key on?

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Turbinesurgeon
05-17-2020, 06:53 PM
Maybe check the ignition switch??


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PincheWey
05-19-2020, 02:26 AM
About your gauges reading zero. Do you have analogue guages? I’m very interested in trying to help you troubleshoot this. Power to back of gauges? If not . Dive deeper.
Fuel pump has a relay or contact I believe that comes from the ecm. Check that for possible no fuel pump. Any present voltage at pump?
Evan46
05-19-2020, 05:58 PM
No voltage at the pump and just replaced the key module, still same problem.. I have a multimeter tester but wouldn’t know how to test a relay.


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JSPulliam21
05-19-2020, 07:07 PM
Do you have power on both sides of the fuel pump fuse with it installed in the fuse block? If the fuse is not the type you can probe, you can pull the fuse and check to see if you have 12V on one side of the socket. I am looking for a wiring diagram for your boat. Do you have one? If you have 12V at the fuse then you the circuit is open somewhere in between. That's why we need a diagram, or you get to trace wires.

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Evan46
05-19-2020, 07:17 PM
I was going to call skiers choice for a diagram tomorrow morning. Hoping it’s not the ECM..


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JSPulliam21
05-19-2020, 07:19 PM
No joke!

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Evan46
05-20-2020, 06:11 PM
I was unable to get a wiring diagram. Is there a way to test the ECM/ECU my self?


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Evan46
05-22-2020, 07:53 AM
Tested relays and they are good but not getting power.


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JSPulliam21
05-22-2020, 08:13 AM
Excellent. Where does power to them come from? ECM or key switch? Can you see what color the trigger wires are and where they go?

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Evan46
05-22-2020, 02:12 PM
It does not appear that they go to the ECM but are damn near impossible to to follow. Skiers Choice said they are not aloud to give me a wire diagram but a dealer may give it to me. I am waiting on a few calls back to see if one will hand it over. I just don’t want to start ripping wires out of harnesses without it. I feel I would make it worse.


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JSPulliam21
05-22-2020, 03:20 PM
Can't argue with your plan. [emoji1360]

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Evan46
06-04-2020, 06:12 PM
The ECM was toast... I sent it in to the link below because skiers choice does not make it anymore. This guy is great. Will diagnose and fix for under $200 if possible. In my case he had to replace and program to fit year/make/model. Total for replacement was $900 which was $1000 cheaper than anything else I found online. Side note which I’m sure most of you know but if it happens to you there are a lot of ECM’s that match but it must be programmed for your boat.

http://mefiburn.com/


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