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TOV Forums > Strictly Technical > > Re: 03 Multiplex in Vigor

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Hondatalover
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03 Multiplex in Vigor    (Score: 1, Normal) 06-10-2018 00:07
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Becoming ever so frustrated with the Vigors electrical bugs I'm thinking about pulling the entire under-dash wiring harness out of a 2003 TL and merging it into the Vigors.

My goal is to upgrade the vigor to the intermittent wipers with adjustable speed settings since they currently don't work at all due to a higher amp fuse being in place of the 30A spot, I believe a wire or some of the fuse box melted.

But the TL uses a multiplex system that consists of a separate CPU and two modules that intercept or modifies the power inputs on the two under dash fuse boxes that your seats, lights or alarm is connected to. It can control everything. The interior security light dimmer, auto/on off head lights, alarm and keyless entry, memory seating, windshield wipers (speed sensitive and brake pedal delay) and some other stuff. It looks like with the way it's designed if it detects faults or unresponsive features it can ignore them which is good as the Vigor doesn't have everything this system supports/ looks for.

It's an added bonus if I can figure it out. I'm unsure if it will need the key ignition and immobilizer feedback to operate the alarm and keyless properly.


Essentially I have to approach this like an aftermarket keyless start and alarm system install.


TonyEX
Profile for TonyEX
Re: 03 Multiplex in Vigor    (Score: 1, Normal) 06-10-2018 20:25
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There comes a time in every project when you got to think:

Is it worth it?

superchg2
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Re: 03 Multiplex in Vigor    (Score: 1, Normal) 06-11-2018 00:11
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TonyEX wrote:
There comes a time in every project when you got to think:

Is it worth it?


The same thing occurred to me.

DCR
Profile for DCR
Re: 03 Multiplex in Vigor    (Score: 1, Normal) 06-11-2018 17:14
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I would isolate and repair the problems with the documented OEM system that is currently in the Vigor.

Looking at this schematic and the one from the Vigor, I don't see how this is going to work but I guess we will see.


Grace141
Profile for Grace141
Re: 03 Multiplex in Vigor    (Score: 1, Normal) 06-12-2018 06:52
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So the wipers don't work at all or just the intermittent setting doesn't work? What are the other electrical problems?
Hondatalover
Profile for Hondatalover
Re: 03 Multiplex in Vigor    (Score: 1, Normal) 06-12-2018 16:29
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The wipers do not work at all. The washer fluid pump does. I can hear the wiper relays in the passenger side kick panel click when I actuate the stalk.

I have tested the wiper motor, it worked but there is no power in the harness going to it. I tested the intermittent wiper relay, it is in proper function. Swapped it for another relay just to be sure. Still no power going to the wiper motor.

The fuse for the wiper motor is under the dash, supposed to be a 30amp ATC. I suspect the wiring from the fuse box to the relay has melted and burned because Honda found a 50amp ATC fuse in its place. I never checked the fuses in this car thoroughly and I should have after I bought it.

I have looked at the wiring between the relay and motor in the engine bay but haven't found anything melted or discolored yet. It could be the integrated control unit/ fuse box or some wire that I can't get to easily that got ruined by the larger fuse or something else.



 
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