Rear Window Lift Motor

[Seabronc]

Do you hear the motor when the switch is operted? Is the symptom the same for both switches?

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[kschirman]

Both switchs give me voltage at the last connector before the motor. When i plug in the connector and hit either switch i get nothing from the motor, no noise or movement. When i connect straight to the battery, the motor works as normal.

 

[Seabronc]

OK, you say you have 11.5 and 11.6 at the connector, is that with your meter leads connected to both contacts in the connector? If you measure it that way, you should see the polarity of the voltage change when the switch is operated in the two directions.

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[kschirman]

Correct, this last time i ran the test, it read 11.98 when i pressed up and had the positive on one pin and the negative on the other. When i pressed down on the switch it went back to 0. I kept the down active and switch the leads on the pins and it read 11.98 again. When i switched the switch, it went back to zero again.

 

[Seabronc]

OK, when you jumper the motor, where do you connect the leads?

 

[kschirman]

The connector that goes up to the lift motor in the tailgate. The male end on the left goes back to the switch in the tailgate. The female end on the right goes up to the lift motor. I plug into the female end when running off the battery. I tested off the male end to test the switches.

 

[Seabronc]

Wow, the only thing I can see that may be bad is the connector. When you put them together one of the wires must not be making contact. I hate to cut them off, but if you have some spade connecters, then cut the plugs off and make your own connections. If that doesn't work, I'm stumped because from what you are telling me, you have the correct voltage and readings at that connector. It does the same thing from either switch, right?

 

[kschirman]

Yeah, same with both switches. I'll try making my own connector tomorrow and give it another go.

I'll let you know how it goes. thanks for your help

 

[kschirman]

Alright, here are the voltages i got while testing the rear switch. I tested the up and down with positive and negative leads on both wires in the plug. All voltages were above 12. so it tests out ok.

 

[kschirman]

Next i tested the drivers switch. reversing the positive and negative leads again. This time the voltage was slightly lower, but everything was around 11.5 volts. So the driver switch tested okay.

 

[kschirman]

I put the connector back together & nothing. So i unconnected the plug again and tested the motor (again) straight off the battery, go figure the motor works as it should.

I inspected the connector again and didn't find any signs of chafed or broken wires or corrosion. The only thing left I could think of was replacing the connector. I cut out the connector and put male and female spades on each end and reconnected the wires.

Guess what, everything worked! So long story short, simple fix after a lot of testing, but the testing saved me from needlessly replacing other parts.

Thanks for everyone's help!

 

[Seabronc]

OK, glad you found it. Thanks for reporting back and including the pictures.

Good luck,

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[chipmyers]

Ok Now that we know its the motor, Mine is doing the same, any ideas how to get to it sence the window is stuck DOWN

in the tailgate. Breaking the glass looks like the best way, but not the best idea.....

 

[kschirman]

Ok Now that we know its the motor, Mine is doing the same, any ideas how to get to it sence the window is stuck DOWN

in the tailgate. Breaking the glass looks like the best way, but not the best idea.....

Hey Chip,

Sorry to hear you're having the same issues i went through. The best way to get the right help is too start your own thread. Give us the full details and we'll be able to help you get your rear window back working again.

Cheers

 

[Seabronc]

Ok Now that we know its the motor, Mine is doing the same, any ideas how to get to it sence the window is stuck DOWN

in the tailgate. Breaking the glass looks like the best way, but not the best idea.....

DITTO, start you own thread and you do not need to break the glass.

Good luck,

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