So, I am having the exact same issue with my 2004. I purchased a new wiper motor. I followed all of the above steps and found this: No problem with ground wire. Purple wire a bit burnt looking at connection point between body and rear door hatch. (As stated above by others). Otherwise the connector at the body/door appears to be fine and the voltage I state below are present at this connector as well.
At the plug to the actual motor I find this:
Connected voltmeter to ground.
12 volts found at only 2 wires: Orange and Gray wire.
The green wire and other pink wire with black stripe read 0 volts with switch on or off, it doesn't matter.
The orange wire is 12 volts whether the switch is on or off.
The gray wire shows 12 volts ONLY when the switch is on. (Either in intermittent mode or full time mode it stays the same.
If I plug the connector into either the old motor or the new motor I get NOTHING.
I am stumped.I can't believe the brand new motor is bad also?
Are any of the voltages not accurate?
Looking for help. :)
Friday, May 10th, 2013 AT 7:55 AM