rear windshield wiper do not work

[Romekt]

How to check whether windshield wiper motor is faulty itself or problem is in any other component like relay or switch. The water pump starts but wiper do not moves.

br,

Romuald

PS

I have electrical diagram but I do not know what voltage shall be on particular terminals.

[Loren]

Exact model and year of your car please.

[Romekt]

2006 cayenne, 3,2L

[Loren]

Did you check 5A fuse F52 (right fuse box)?

[Romekt]

Yes, the fuse is O.K.

[Loren]

Is the wiper arm loose on the driving shaft?

(just trying to eliminate the easy stuff)

[Romekt]

Yes, the wiper arm is loose.

[Loren]

Pull the plastic cover off the nut and see if you can tighten it down.

(click to enlarge)

[Romekt]

Sorry, but I misunderstood you. I meant that wiper shaft is not stuck. In other words the motor is dead and do not moves when a switch is depressed.

[Loren]

Can you move the wiper blade with your hand?

If so, then perhaps the nut that holds it on has come loose.

[Romekt]

This is not mechanical problem! I have disconnected the motor from the shaft and motor is not turning.

[jrolstin]

Did you close the rear latch switch while keeping the rear hatch open to test? You have to simulate that the rear hatch is closed. Use a screw driver and make sure it is in the secondary position (fully closed simulation) and then test the wiper. Not very common for the motor to be the issue... I have seen the actual mechanical pivot point be very gummed up and stiff.

If the motor doesn't work, are you getting voltage at the fuse?

[Romekt]

There was two problems. Faulty motor and stiff crank shaft mechanism. So stift that I can not remove a wiper blade and had to use a jigsaw.

Thanks for help.