Question about 1987 Subaru Gl 4WD

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1987 Subaru GL Wagon windshield wipers are inop in all modes.

This is a multi-level problem because I have already replaced an inoperative motor assembly and the problem is still not solved. I have power to the motor, no fuses were blown and I can hear the intermittent module clicking at regular intervals with no result at the windshield. Neither low or high speed works either. According to the wiring diagram this motor grounds at the case and this checks out as a good ground. With the plug connected to the motor, three of the four leads give me a voltage readout of battery voltage (just under 12 volts) and I suspect the fourth lead is to give the intermittent module a position indication. I am not sure of my test results because I do not have correct information from my limited repair manual to properly interpret the testing I have completed. I need more specific test information in order to complete my repair.

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Bad wiper motor ground, clean where it meets the body panels.

Posted on Nov 16, 2009

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2 Answers

My wiper motor only works on high and stops were ever the wipers are at. And the washer motor doest #39;t work


Low Speed Windshield Wipers
Low speed is activated when the multifunction switch supplies a specific ground to the speed inputs of the windshield wiper motor module. The windshield wiper motor module then supplies ground to only the windshield wiper run/park relay coil, activating it. When the windshield wiper run/park relay is activated, the deactivated high/low relay connects voltage to the windshield wiper motor low input activating the wiper motor. The windshield wiper motor module continues to operate the windshield wiper motor in the same manner as in high speed, but in low speed with the wiper motor connected to the low speed input.
Washer System
The windshield washer is activated by the internal wiper motor module when it receives a ground signal input from the multifunction switch. Dependent on the switch selection, the internal wiper motor module activates the windshield washer relay (internal) by grounding the respective relay coil. When the relay is activated, it connects voltage to the washer pump while the washer level switch provides ground to the washer pump.
Visual Inspection Chart Mechanical Electrical
  • Windshield washer hoses
  • Wiper linkage
  • Multifunction switch
  • Battery junction box (BJB) fuse 110 (30A)
  • Central junction box (CJB) fuse 13 (10A)
  • Circuitry
  • Windshield wiper motor
Symptom Chart Condition Possible Sources Action
  • The wipers are inoperative
  • Fuse(s)
  • Circuitry
  • Multifunction switch
  • Windshield wiper motor
  • Go To Pinpoint Test A .
  • The wipers stay on continuously
  • Circuitry
  • Multifunction switch
  • Windshield wiper motor
  • Go To Pinpoint Test B .
  • The high/low wiper speeds do not operate correctly (intermittent wiper mode OK)
  • Circuitry
  • Multifunction switch
  • Windshield wiper motor
  • Go To Pinpoint Test C .
  • The intermittent windshield wiper speed does not operate correctly (high/low speeds OK)
  • Circuitry
  • Multifunction switch
  • Windshield wiper motor
  • Go To Pinpoint Test D .
  • The wipers will not park at correct position
  • Pivot arm adjustment
  • Linkage
  • Windshield wiper motor
  • REFER to Windshield Wiper Blade and Pivot Arm Adjustment in this section.
  • The washer pump is inoperative
  • Circuitry
  • Windshield washer pump
  • Multifunction switch
  • Windshield wiper motor
  • Go To Pinpoint Test E .
Do you know how to do electrical testing ?
  • windshield wiper motor
  • PINPOINT TEST C: THE HIGH/LOW WIPER SPEEDS DO NOT OPERATE CORRECTLY (INTERMITTENT WIPER MODE OK) s6a~tr~en~file=ani_caut.gif~gen~ref.gif CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
    Test Step Result / Action to Take C1 CHECK THE MULTIFUNCTION SWITCH
    • Key in OFF position.
    • Disconnect: Multifunction Switch C202b.
    • Carry out the multifunction switch component test. Refer to Wiring Diagrams Cell 149 for schematic and connector information.
    • Does the multifunction switch pass the component test?
    Yes
    GO to C2 .

    No
    INSTALL a new multifunction switch. REFER to Section 211-05 . C2 CHECK CIRCUIT 57 (BK) FOR AN OPEN
    • Measure the resistance between the multifunction switch C202b-5, circuit 57 (BK), harness side and ground.
      s6a~tr~en~file=n0025872.gif~gen~ref.gif
    • Is the resistance less than 5 ohms?
    Yes
    GO to C3 .

    No
    REPAIR the circuit. TEST the system for normal operation. C3 CHECK CIRCUITS 56 (DB/OG), 61 (YE/RD), AND 63 (RD) FOR OPENS
    • Disconnect: Windshield Wiper Motor C125.
    • Using the following table, measure the resistance between the multifunction switch C202b harness side and the windshield wiper motor C125 harness side:

      Multifunction Switch C202b Windshield Wiper Motor C125 pin 6, circuit 56 (DB/OG) pin 10, circuit 56 (DB/OG) pin 1, circuit 61 (YE/RD) pin 1, circuit 61 (YE/RD) pin 4, circuit 63 (RD) pin 9, circuit 63 (RD)

      s6a~tr~en~file=n0025874.gif~gen~ref.gif
    • Are the resistances less than 5 ohms?
    Yes
    GO to C4 .

    No
    REPAIR the circuit. TEST the system for normal operation. C4 CHECK FOR CORRECT WIPER MOTOR OPERATION
    • Disconnect all wiper motor connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all wiper motor connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present?
    Yes
    GO to C5 .

    No
    The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation. C5 CHECK THE WINDSHIELD WIPER MOTOR
    • Key in OFF position.
    • Disconnect: Windshield Wiper Motor C125.
    • Carry out the windshield wiper motor component test as outlined in this section.
    • Does the windshield wiper motor pass the component test?
    Yes
    The system is operating correctly at this time. The concern may have been caused by binding or incorrect pivot arm adjustment. REFER to Windshield Wiper Blade and Pivot Arm Adjustment in this section. TEST the system for normal operation.

    No
    INSTALL a new windshield wiper motor. REFER to Windshield Wiper Motor in this section.

    Jul 20, 2016 | 2006 Mercury Grand Marquis

    2 Answers

    Where is the windshield wiper fuse located in the fuse box on a 06 crown victoria


    drivers side inner fender under the hood, look in the owners manual for the number and amps. some are marked under the lid itself

    Mar 19, 2015 | 2006 Ford Crown Victoria

    1 Answer

    2001 Subaru outback driver side windshield wiper goes to far to the outside tears up the end of the blade - ideas please


    I have the same problem with a 2001 Legacy wagon. The problem is not as simple as the solutions above. Mine are adjusted to park as low as possible when off. Even so, the blade on the drivers side goes all the way off the windshield. The Subaru dealer wants to replace the whole wiper blade transmission for about $450. Looking online it seems to be interconnecting arms and pivot points that connect the motor to the wiper blade arms.

    Nov 17, 2011 | 2001 Subaru Outback

    1 Answer

    Windshield wiper inoperative. fuse is good and new motor. where do i go from here


    If fuse is good and motor is new then I would be looking at switch that operates your wipers. Double check your wiring also.

    Feb 23, 2011 | 1998 Oldsmobile Aurora

    1 Answer

    Why are my wipers only working on high mode


    If your wipers work on high this only leaves two possibilities per GM diag chart, a open in the wiper motors ground wire or a bad wiper motor:
    * Wipers Inoperative - All Modes
    * Wiper Motor Replacement

    Hope helps (remember comment and rated this help).


    Jul 06, 2010 | 2004 Pontiac Grand Prix

    2 Answers

    2003 subaru outback wagon. 3ltr engine. wipers stall on windshield.they lack power and will resart again for a few strokes with a push. not sticky windshield. wiper motor?


    if you can get to it try to lube the drive mechanism with a little wd-40.. if does not work have the wiper motor replaced..good luck..

    Nov 15, 2009 | 2003 Subaru Outback

    1 Answer

    Windshield wiper switch inop., except when pushed for washer.


    My solution is as follows: Place a 1K-OHM resistor (Radio Shack Part # 271-1118) between the orange/white stripe wire (power) and the green/yellow stripe wire of the mullti-switch terminal block of the steering column. This provides the speeds - normal and intermittent speeds but not high wiper speed. Less than a $1 solution instead of the costly BTM replacement.
    Bob

    Dec 03, 2008 | 1996 Dodge Caravan

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