Power Window Issues

[markymarc]

Hello community. I am an sc300 2nd owner. I am having issues with the passenger window. It wont go up or down with either switch. Drivers works fine, but passenger not at all. I get power to the pass. switch, but no up or down. I replaced the switch and still nothing. 1yr ago i replaced the regulator, but it worked fine. Any ideas? When putting power directly to the moter, i can make it go up and down. So it's not the motor!

[fhb5032]

Bad ground??

[markymarc]

That was my first thought too, but where? Ive checked both door harnesses where the cluster goes thru but no bad wires there. I am a stumped cookie. If I think about this long enough, Im bound to figure it out. I know the switch has 4 wires. Power up and power down, is it ground up and ground down too? The motor itself has 2 wires, meaning  power up and power down. Ones solid red and the other is green w/ a wht stripe. Is that the ground?

[jepavek]

Greetings, Pin 3 I believe at the passenger side switch is a blue wire. It feeds the passenger side switch its own power, independent of the driver side switch.  If that circuit does not have 12 volts the window will not operate up or down from the passenger switch.  The driver side switch provides both power and ground to operate the window from the master switch, hence why it operates with the master, but not the passenger switch.  check the blue wire at the passenger switch key on, engine off, it should have a minimum of 12 volts when the passenger switch is operated.  if the 12 volts does not maintain, you are looking for a poor connection at the power source, or damaged wire, most likely in the door hinge rubber bellow.  The blue wire is fed from the Main Power Relay, so if the windows work, at least the blue wire to the master switch and relay are intact.  The two blue wires are spliced together near the fuse and relay box, under the hood.  I suspect a break or high resistance in that circuit.  Blue is noted as "L" in the diagram.  Hope this helps!

57455833.bmp

57455834.bmp