2000 Galant electrical mystery

Tiny
TECNATIC
  • MEMBER
  • 2000 MITSUBISHI GALANT
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 206,000 MILES
I have a 2000 Mitsubishi Galant ES with 206000 miles 4 cylinder Automatic FWD

I have a very weird electrical problem which I cant figure out. All of this happened at the same time:


The low beam headlights work, but the high beams do not.

The emergency flashers work, but the turn signals do not.

The windshield wipers work on low speed only, but not on high speed or intermittent speed.

The windshield washer does not work.

The fog lights do not work.


All of these were working fine just before this problem happened, whatever it is. All of these stopped working simultaneously. I have checked all of the fuses, replaced the turn signal lever, and replaced the ETACS behind the main fuse box in the dashboard but none of that made any difference. I cant figure out what all of these systems have in common. Is there a common ground wire, or do they all run though some connector in the wiring harness or what else could it be?
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Thursday, February 3rd, 2011 AT 5:29 AM

3 Replies

Tiny
KHLOW2008
  • EXPERT
Here are the schematics of the various items mentioned

The one thing common among all cpompnents listed is the Front ECU, in engine compartment relay box.
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Thursday, February 3rd, 2011 AT 1:37 PM
Tiny
TECNATIC
  • MEMBER
If that is the source of the problem and the circuit that flashes the marker lamps for the turn signals, then how can the emergency flashers work at all?
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Friday, February 4th, 2011 AT 12:09 AM
Tiny
KHLOW2008
  • EXPERT
Emergency flasher uses a different circuit that does not involve the Front ECU.
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Sunday, February 6th, 2011 AT 5:54 PM

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