2002 Mitsubishi Mirage Windows and 1 lock

Tiny
RWALSH
  • MEMBER
  • 2002 MITSUBISHI MIRAGE
  • 45,000 MILES
Hi there. My windows (all of them) will not roll down. Also, the automatic door locks on driver’s side (inside) are unresponsive, but work everywhere else. Fuse? If so, which one? I do not have the manual. Thanks.
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Monday, June 3rd, 2013 AT 9:13 AM

7 Replies

Tiny
CARADIODOC
  • EXPERT
Based on the symptoms I'd start by looking for broken or frayed wires between the driver's door hinges.
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Monday, June 3rd, 2013 AT 9:27 AM
Tiny
RWALSH
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Thanks for the quick reply. The window controls do not work on ANY door, though. Not just the drivers side door.
And it is a Montero. Not Mirage. I must've clicked wrong.
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Monday, June 3rd, 2013 AT 9:35 AM
Tiny
CARADIODOC
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There should be a lockout button on the driver's door. The other three window circuits go through that switch. Also, each of the three passenger windows has two wires that go through their corresponding switch in the driver's control panel. One is for 12 volt power and one is the ground. Their functions are reversed by either switch to change the direction that motor goes.

Every window switch has two switches built into it. When a button is pressed, one switch stays released and one turns on. Current flows through the lockout switch, through both released switch sections in one switch, through the activated switch section and the released switch section in the other switch, the motor and wires, then to ground and back to the battery. To say it a different way, current has to flow through both window switches twice, regardless of which switch is activated. If the power wire feeding the passenger doors is broken the windows will only work from the driver's door, not from the passenger switches. If that power wire is broken where it goes to the driver's switch assembly, none of the windows will work.
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Monday, June 3rd, 2013 AT 9:52 AM
Tiny
RWALSH
  • MEMBER
Great explanation, thanks. Seems like it's more of a problem than just a simple fuse :(
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Monday, June 3rd, 2013 AT 9:55 AM
Tiny
CARADIODOC
  • EXPERT
Yup. In all the cars I've worked on power windows and windshield wipers use thermal circuit breakers that reset automatically when they cool down. That usually takes just a few seconds. That's a safety feature that gets those systems working again if possible. If there was an intermittent short, a blown fuse would cause a total loss of function. A circuit breaker that resets by itself, even for a few seconds, can provide just enough operation to get the job done.

Circuit breakers can fail too but that is not real common. There will be an arc each time the contacts open, just like with a switch, and eventually the contacts will burn away. That doesn't happen very often with a circuit breaker because the contacts don't open very often so little arcing takes place.
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Monday, June 3rd, 2013 AT 10:06 AM
Tiny
RWALSH
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You've been really helpful and informative. Thanks again!
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Monday, June 3rd, 2013 AT 10:10 AM
Tiny
CARADIODOC
  • EXPERT
I'm heading out of town now to help a friend in his body shop, (and to learn some new skills). I'll check back tonight and will expect to see some good news.
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Monday, June 3rd, 2013 AT 10:12 AM

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