Question about 1994 Geo Prizm
Posted by Anonymous on
Old post day, so other can learn.
stuck on you mean but NOT KEY OFF right?
the fastback has rear wiper , ill pretend not that...
front wiper stuck on, (most times that is a bad wiper motor the gear box has a bad, SUSTAIN contact switch.
but here, on this car, no computers, no magic logic modules
its just a classic wiper and switch.
the motor has 1,2,3,5,6 wire pins. (not sure why they skipped 4)
1 is ground skip that.
key on , bat goes hot ,12v,
if the switch on the lower left is bad (shorted)
this is the SUSTAIN switch.
pin 3 wiper off is 0v.
if pin 3 is 12vdc wiper off(again key on)
then the switch lower left is shorted inside the gear box.
seen vast like this on man cars.
the main switch not seen here can fail too, but but that will cuase 12v to be on pin 2 or 3 failed, to find if main switch is bad one can only do continuty tests on that switch, because the secret
jumper seen below, when failing there, makes it seem like the main switch is bad but is not,
one can pull the connector and ohm out 3 to 6 , if 0 ohms its a bad gear box, (er, motor assembly) the red upside U below is the main switch in OFF, it jump 3 to 5. like this. and no power to it from main switch.
that is the long story on old corolla;s
Posted on Oct 23, 2016
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Posted on Jan 02, 2017
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