1993 Toyota 4 runner back glass will roll up and down fine sometimes then next time you try it nothing..... any idea's......

 

Yep trouble shoot eet! Dirty switch, loose connectors, hard gasket keeping the "latched switch" from closeing unless it's slammed closed.

 

Worked fine when I left work up and down then I get home turn vehicle off then decide to see if it still works and done again........you can watch amp gauge while your moving switch to up position and the amps fall,but try to get window down and gauge never moves unless class moves......

 

You have an amp guage and it registers the movement of the glass, but doesn't register a draw when the glass refuses to move, I read that correctly?

Can't be a stuck motor, one part down about 4-5 to go. 4 switchs and a relay, not counting plugs and wires..

Suggest you start with the switch in the front seat since it's the easiest to get to. Verify it has conductivity when you move it to both up and down positions. If not take it apart and clean the contacts or source another one.

 

Amp / volts gauge is what I was talking about it will move when u put switch in up position when it's not working is correct, it also will not work with key when it want work with switch.....Now you might try 20mins later and it will work fine again.......

 

We have failure to communicate

Well if it shows the power drop it's maybe a bound up motor/mechanisim, need to clean and lube the tracks, "regulator" (silly/fancy name for lever mechanisim), and maybe the gear box on the motor and the motor it's self.

There are a few threads here on swaping out that motor for one from a rear drivers side power window of a passenger car. Sorry don't recall late 90's camry maybe..

And since you have to open the tail gate up todo that while you're in there clean and put fresh di-electric grease on the plugs and make sure the plugs are good and tight. Also wouldn't hurt to check the wires are intact where they run thru the body gromets.

 

I think you mean voltmeter I have never seen a amp meter in a factory Toyota gauge.

Then I don`t get out much.



Could be one of those safety switches sticking

might be the regulator needs to be lubed along with the rubber sprayed with silicone .

pull it apart check it out

 

I think the relay is shot. Can you hear it click when you press the window switch? Its way in the the back by the tail gate.

 

The relay component is in the drivers side rear pannel next to the compartment and taillight. (Normaly green in color but may be brown (4x5x1 in size))

Easyer to replace if you can find one.
I have refreshed 3 of them for my self and friends by swapping the internal relays around since there is a unused set on the unit. (Yes it does require soldering)

 

The 80s era rear window relay, is located at the front of the rear cabin on the drivers side. The 90's era rear window & wiper relay is located at the rear of the rear cabin on the drivers side.