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Yoyota avensis 2002 rear wiper on continually even when switched off

Wiper on rear on continually

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Posted on Jan 02, 2017

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Obertelli
  • 3006 Answers

SOURCE: Rear wiper constantly regardless of switch position

If the switch itself feels just the same as it always has then the most likely fault is that the rear wiper motor located behind the panel in the tailgate has suffered a failure of the self-parking mechanism: it's what ensures that after you turn the wiper off, the motor keeps running until the wiper is back in the parked position.

There are two major parts to the way it works: a self parking switch which works off a cam located in the wiper motor, and a back-emf brake which overcomes the inertia of the mechanism.

The simplest fix will be to just replace the motor assembly. You can get one from a scrapyard, but won't know whether it's about to fail for the same wear-related reasons. Alternatively fit a new or remanufactured unit. You'll also find that a good automotive electrician can usually fix the original motor, but as it's nearly ten years old there may be other wear-related issues waiting to bite you on the bottom so I'd personally go for a remanufactured unit from a trustworthy supplier. Such units normally come with a minimum one year warranty. Anything with just a 30 or 90 day warranty has likely just been taken from a scrapped vehicle, cleaned and given a shiny coat of paint...

Posted on Mar 15, 2010

Testimonial: "Thanks for the info-Appararently quite a common occurence & particularly annoying on a long drive"

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  • 444 Answers

SOURCE: rear wiper not working for my Toyota avensis 1999 1.6

Check for a blowin fuse or a defective relay

Posted on Oct 30, 2012

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2002 trialblazer rear window wiper inop. changed switch and motor. no power to motor. cannot find relay nor fuse


There are something's involved that you are not aware of , or familiar with . Electronic control modules .
Rear Wiper/Washer System Controls
• Body control module (BCM)
• Liftgate control module (LGM)
• Rear wiper/washer switch
Do you know what a serial data network is ?
Rear Wiper/Washer System Operation
The rear window wiper/washer switch is an input to the BCM. The requested rear wiper mode is sent to the liftgate control module (LGM) by the BCM as a message on the serial data circuit, and the rear window wiper motor is controlled by the LGM. The switch power circuit to the rear wiper/washer switch is a 12-volt reference supplied by the BCM during ignition on, accessory or RAP power modes. The rear wiper/washer switch is a series of resistors and the switch position is determined by the voltage of the rear wiper/washer switch signal circuit to the BCM. The rear wiper/washer switch has continuity at all times and the BCM expects a rear wiper/washer switch signal voltage in all switch positions including OFF. The rear wiper motor is supplied battery positive voltage and ground. The LGM controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the LGM. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode. The liftglass and liftgate ajar switches are inputs to the LGM and must be in an inactive state in order for rear wiper washer system operation to be enabled. When an ajar switch is active the LGM suspends wiper motor operation directly and sends the ajar switch status messages over the serial data circuit enabling the BCM to suspend washer pump operation. The rear window washer pump is controlled by the BCM through the rear washer relay. Battery positive voltage is supplied to the coil and switch sides of the rear washer relay. When the rear window wash request is active the BCM energizes the relay by grounding the relay coil through the rear washer relay control circuit. When the relay is energized battery positive voltage to the relay switch is supplied to the washer pump control circuit.

Your best bet , take it to a qualified repair shop and have it checked for DTC'S - diagnostic trouble codes .
DTC B1017 or B3970
The rear wiper motor is supplied battery positive voltage and ground. The liftgate control module controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the liftgate control module. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode.
DTC B3799

2
Turn the ignition ON.
Operate the rear wiper switch through all the switch positions.
Does the rear window wiper operate normally?
--
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
NO - Go to Step 3
3
Install a scan tool.
Display the liftgate control module data list.
Observe the following parameters while operating the respective switches. Refer to Scan Tool Data List for typical values.
• Liftgate Ajar Switch
• Liftglass Ajar Switch
Did the scan tool indicate the correct switch positions?
--
Go to Step 4
Go to Courtesy Lamps Inoperative in Lighting Systems
4
Observe the requested rear wiper parameter in LGM data list.
Operate the rear wiper switch through all the switch positions.
Does the scan tool indicate the correct requested rear wiper parameter in relation to the switch position?
--
Go to Step 5
Go to Step 6

Feb 06, 2017 | 2002 Chevrolet TrailBlazer

1 Answer

Where is the relay and fuse for rear wiper located ?


The rear wiper / washers are controlled by the GEM - generic electronic module .
NOTE: The generic electronic module (GEM) will not activate the rear wiper system if either the liftgate or the liftgate glass is ajar. If either the liftgate or the liftgate glass becomes ajar while the rear wiper is in operation, the GEM will park the rear wiper motor.
There are two distinct modes of wiper operation:
  • Off Mode: In this mode, there is no rear wiper activity, and the wiper motor will be in the PARK position.
  • Interval Mode: This mode is selected when the rear wiper switch is in either the Interval 1 or 2 position. When this mode is selected, the rear wiper motor is driven up onto the glass by activating the rear wiper UP relay. When the wiper motor HIGH/LOW/PARK position input reaches the high position, the UP relay is deactivated and the DOWN relay is activated to reverse the wiper motor direction. When the wiper motor reaches the LOW position, as determined by the HIGH/LOW/PARK position input, the GEM deactivates the DOWN relay and will begin a new wiper cycle 1 to 10 seconds later, depending on the interval position selected.
Inspection and Verification
  1. The wiper/washer system is a generic electronic module (GEM) controlled system; refer to Section 419-10 .
  1. Verify the customer concern by operating the wiper/washer system.
  1. Visually inspect for obvious signs of mechanical and electrical damage.
Visual Inspection Chart Mechanical Electrical
  • Hoses to windshield washer pump
  • Wiper linkage
  • Fuses 6 (5A), 8 (5A), 15 (5A), and 20 (5A)
  • Wiring harness
  • Loose or corroded connector(s)
  • Relays
  • Motors
  • Multifunction switch
  • Washer fluid level switch
  1. If the concern remains after the inspection, connect New Generation STAR (NGS) Tester to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the NGS menu. If NGS Tester does not communicate with the vehicle:
    • Check that the program card is properly installed.
    • Check the connections to the vehicle.
    • Check the ignition switch position.
  1. If NGS Tester still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
  1. Perform the DATA LINK DIAGNOSTIC TEST. If NGS Tester responds with:
    • CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Section 418-00 .
    • NO RESPONSE/NOT EQUIPPED for generic electronic module (GEM), go to Pinpoint Test M.
    • SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the GEM.
  1. If the DTCs retrieved are related to the concern, go to GEM Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. Your best bet is take this to a ASE certified repair shop !

Mar 13, 2016 | 1999 Ford Expedition

1 Answer

Rear wiper not working for my Toyota avensis 1999 1.6


Check for a blowin fuse or a defective relay

Oct 30, 2012 | Cars & Trucks

1 Answer

Rear wiper turned to off position continues to draw on battery until dead


wiper motors have a circuit, always 12V on, which returns them to the rest position even after the switch is in OFF position. I would suspect a malfunction in that circuit. it is inside the motor body and not replaceable other than by replacing the whole wiper motor.

Mar 08, 2011 | 2003 Ford Expedition

1 Answer

Rear wiper constantly regardless of switch position


If the switch itself feels just the same as it always has then the most likely fault is that the rear wiper motor located behind the panel in the tailgate has suffered a failure of the self-parking mechanism: it's what ensures that after you turn the wiper off, the motor keeps running until the wiper is back in the parked position.

There are two major parts to the way it works: a self parking switch which works off a cam located in the wiper motor, and a back-emf brake which overcomes the inertia of the mechanism.

The simplest fix will be to just replace the motor assembly. You can get one from a scrapyard, but won't know whether it's about to fail for the same wear-related reasons. Alternatively fit a new or remanufactured unit. You'll also find that a good automotive electrician can usually fix the original motor, but as it's nearly ten years old there may be other wear-related issues waiting to bite you on the bottom so I'd personally go for a remanufactured unit from a trustworthy supplier. Such units normally come with a minimum one year warranty. Anything with just a 30 or 90 day warranty has likely just been taken from a scrapped vehicle, cleaned and given a shiny coat of paint...

Mar 15, 2010 | 2001 Toyota Camry

1 Answer

2002 Rear Wiper motor continuously runs


LOOK ON THE BASE OF THE WIPER ARM WHERE IT CONNECTS TO THE MOTOR THERE SHOULD BE A CAP THERE, FLIP IT OPEN AND TIGHTEN THE NUT, AND RECLOSE THE COVER. THIS SHOULD STOP YOUR PROBLEM

JAMESFWALKERJR2006@YAHOO.COM

Aug 28, 2009 | 2004 Chevrolet TrailBlazer

2 Answers

Rear Windsreen wiper motor runs continuousley in


The "stop" function is in the motor of the wiper...remove the fuse and call it a day...You shouldn't use it anyway the rear glass is "soft" in these cars and the wiper action will damage the glass over time.
Sorry :o(

Jun 14, 2009 | 2002 Volkswagen Passat

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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