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Rear wiper does not move - 2005 Buick Terraza

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Rear wiper motors are a common problem

Posted on Oct 16, 2009

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Why is it my 2008 chevy uplander rear wiper motor/blade moves some and stops. I let van set 5-10 minutes with key off. Turn on key. Wiper motor/blade moves a few degrees and then stops again. Why?


Can you move the wiper by hand ? Which does your vehicle have ?
WDA/Z88 The rear wiper is controlled based on an input from the rear wiper/washer portion of the multifunction switch. When closed, the wiper ON and wiper DELAY switches provide a unique voltage signal to the rear window wiper motor indicating the desired speed. Each switch has a unique resistor that drops the voltage to a specified value which is interpreted by the rear window wiper motor as ON or DELAY. The rear wiper motor receives B+ voltage from the I/P fuse block and accessory voltage from the body control module (BCM).
W49 The rear wiper is controlled based on an input from the rear wiper/washer switch. When closed, the wiper ON switch provides a voltage signal to the rear window wiper motor indicating rear wiper operation is requested. The rear wiper motor receives B+ voltage from the I/P fuse block and accessory voltage from the body control module (BCM).
Do you know how to do electrical testing ?
WDA/Z88
  1. Ignition OFF, disconnect the harness connector X1 at the multifunction switch.
  2. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 4 and ground.
  3. ?‡'
    If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, refer to Power Mode Mismatch.

  4. Ignition OFF, connect the harness connector at the multifunction switch. Disconnect the harness connector at the rear window wiper motor.
  5. Test for less than 20 ohms between the ground circuit terminal B and ground.
  6. ?‡'
    If greater than the specified range, test the ground circuit for an open/high resistance.

  7. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal A and ground.
  8. ?‡'
    If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.

  9. Verify a test lamp illuminates between the ignition circuit terminal E and ground.
  10. ?‡'
    If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

  11. Rear wiper switch in the ON position, test for B+ between the signal circuit terminal D and ground.
  12. ?‡'
    If less than the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, test or replace the multifunction switch.

  13. Rear wiper switch in the DELAY position, test for B+ between the signal circuit terminal D and ground.
  14. ?‡'
    If less than the specified value, test or replace the multifunction switch.

  15. If all circuits test normal, test or replace the rear window wiper motor.
W49
  1. Ignition OFF, disconnect the harness connector at the rear wiper switch.
  2. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 6 and ground.
  3. ?‡'
    If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, refer to Power Mode Mismatch.

  4. Ignition OFF, connect the harness connector at the rear wiper switch. Disconnect the harness connector at the rear window wiper motor.
  5. Test for less than 20 ohms between the ground circuit terminal B and ground.
  6. ?‡'
    If greater than the specified range, test the ground circuit for an open/high resistance.

  7. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal A and ground.
  8. ?‡'
    If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.

  9. Verify a test lamp illuminates between the ignition circuit terminal E and ground.
  10. ?‡'
    If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

  11. Rear wiper switch in the ON position, verify a test lamp illuminates between the signal circuit terminal D and ground.
  12. ?‡'
    If the test lamp does not illuminate, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the I/P switch assembly.

  13. If all circuits test normal, test or replace the rear window wiper motor.
Component Testing

Do you know how

Jun 09, 2016 | 2008 Chevrolet Chevrolet Uplander LS

1 Answer

2001 expedition rear wiper and washer doesn't work


The rear wiper motor assembly may be defective/seized. You can try turning on the rear wiper and moving the wiper arm with your hand to see if it will move even a little bit. If you can coax it to move, the wiper motor is bad and needs replacement. If it doesn't move, you will have to disassemble the rear hatch panels and test the motor directly for power and ground.

Jun 21, 2015 | Cars & Trucks

1 Answer

What type of fuse is used for a 2007 Eddie Bauer Ford Explorer rear windshield wipers and where is it placed?


Your owners manual will give you fuse location and identification for the rear wiper. Most likely a wiper motor problem though. Turn on rear wiper and grab rear wiper arm and see if it will move at all. If it does move a bit or starts working....the motor is the problem

May 01, 2015 | 2007 Ford Explorer Eddie Bauer

1 Answer

Rear wiper blade on ml not moving - have changed


Check that the wiper arm hasn't come loose.
Tighten the nut under the cover.

Jun 11, 2010 | 2004 Mercedes-Benz Mercedes Benz M Class

1 Answer

Rear wiper motor ford expedition 2005


my 2005 ford exp rear wiper moves but the wiper does not it look like something is missing to make it move back and forth can you help.

Jul 01, 2009 | 2005 Ford Expedition

1 Answer

Rear wiper and washer of BMW 5 E39 not working


I had the same problem. I thought it was an issue with a blown fuse, but also noticed that the rear wiper was very stiff.
I solved it by opening the rear window (so the wiper is not clicked into the motor) then squirt some WD40 into the wiper mechanism (I put the oil in from the outside). Gently move the wiper from side to side until it starts to free up - after a couple of movements the wiper should be moving freely again. No issues since.

At the same time, check that the washer jet is correctly angled. Mine was squirting directly into the wiper which may have caused it to rust up a bit.


Jun 01, 2009 | 2001 BMW 5 Series

1 Answer

Problem with rear window wiper. Does not start without a manual lift to start


Sounds like the wiper motor is on it's last leg(s) -- needs help starting -- not enough torque supplied by the motor to move from dead stop. Will probably need replacing.

May 29, 2009 | 2002 Ford Expedition

1 Answer

Rear Windscreen wiper not working Seat Ibiza 2003


smonahan, The rear wiper fuse is actually a circuit breaker. It will reset itself.
Your wiper arm has probably stripped were it attaches to the motor shaft. You can check by trying to move the wiper arm with your hand, if it moves back and forth, its stripped. A new wiper arm will be needed.
Try it and let me know.
Regards,

Feb 12, 2009 | 2002 Oldsmobile Bravada

1 Answer

Rear Wiper won't move on 1998 Jimmy


If you can wiggle the arm for at least 45 degrees or  in full motion meaning you have a problem mechanically, rear wiper has self locking when OFF and it shouldn't move. Open the inner panel and check the motor assembly for any abnormalities.
Good luck.

Jan 15, 2009 | 1998 GMC Jimmy

1 Answer

99 Nissan Quest real wiper runs continually when ignition is on


Principles of Operation
Operation of the windshield wiper and washer is controlled by the front wiper/washer amplifier assembly. The front wiper/washer amplifier input comes from the multifunction switch by means of a voltage divider circuit. A constant voltage is applied to the multifunction switch by the front wiper/washer amplifier. When the multifunction switch is moved into the LO, HI, or intermittent position, the voltage is directed through a series of resistors. This results in various voltages being returned to the module for each switch position. The module then grounds the appropriate circuit, based on the voltage signal received back from the multifunction switch. This causes the wipers to run intermittently, or at the appropriate speed. Voltage is supplied to the wiper motor by the CJB fuse F46 (20A).
When the multifunction switch wash button is depressed, it bypasses all of the resistors returning a full voltage signal to the module. The module then grounds the appropriate circuits to operate the windshield washer pump for as long as the switch is depressed. The windshield wiper speed is dependent on the position of the windshield wiper/washer switch.
Voltage for the windshield washer pump is also provided by CJB fuse F46 (20A).
Operation of the rear wiper and washer is controlled by the rear wiper/washer switch.
Voltage is supplied to the rear window wiper motor by the fuse junction panel fuse F44 (10A).
The rear window wiper motor ground is made or broken by the rear wiper/washer switch. When the rear wiper/washer switch is moved into the WIPER position, it grounds the rear window wiper motor circuit, causing the rear window wiper motor to run once every 10-15 seconds.
Voltage to the rear washer pump motor is also supplied by the CJB fuse F44 (10A). The rear washer pump is directly controlled by the rear wiper/washer switch which makes or breaks the ground for the washer pump motor, depending upon its position.
If the vehicle is equipped with a movable liftgate glass, a liftgate glass switch is utilized to prevent rear window wiper operation when the liftgate glass is open. This same switch also causes the rear window wiper to drop down approximately three inches when the liftgate glass latch is released.
------------------------------------------------------------------------------------------
  • The wipers stay on continuously — rear wiper
  • Circuit.
  • Rear wiper/washer switch.
  • GO to Pinpoint Test L .


---------------------------------------------------------------------------------------------
Measure the resistance between rear wiper/washer switch C288 pin 6, component side and rear wiper/washer switch C288 pin 2, component side.
  • Is the resistance less than 5 ohms with the switch depressed, and greater than 10,000 ohms with it released?
sxv~us~en~file=arrow.gif~gen~ref.gifYes GO to L2 .
sxv~us~en~file=arrow.gif~gen~ref.gifNo INSTALL a new rear wiper/washer switch. TEST the system for normal operation.

Measure the resistance between rear wiper/washer switch C288 pin 6, circuit WB08 (BU/YE), harness side and ground.
  • Is the resistance greater than 10,000 ohms?
sxv~us~en~file=arrow.gif~gen~ref.gifYes INSTALL a new rear wiper /washer switch. TEST the system for normal operation.
sxv~us~en~file=arrow.gif~gen~ref.gifNo REPAIR circuit WB08 (BU/YE). TEST the system for normal operation.

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Dec 08, 2008 | 1999 Nissan Quest

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