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Why won't my windshield wipers turn off?

The wipers also do not work in intermittent positions. I also cannot find any wiper relay for this vehicle.

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I have a 2009 gmc sierra, where is the wiper relay location.


The PCB wiper relays are soldered directly to circuit board inside the under hood fuse box.
The windshield wiper/washer switch signal circuits are inputs to the body control module (BCM) and the BCM controls wiper motor low speed operation, washer pump and high speed operation. The windshield wiper/washer switch is provided a low reference from the BCM and each of the switch signal circuits is supplied 12 volts through a resistor and monitored within the BCM. During LOW or INTERMITTENT operation the wiper switch low signal circuit is closed to the low reference circuit through a series of resistors within the switch assembly and the signal circuit voltage monitored by the BCM will depend on the switch contact location to the resistor assembly. During HIGH or WASH operation the high and wash switch signal circuits are closed directly to the low reference circuit within the switch assembly and nearly all the signal circuit voltage will be dropped across the BCM resistors. The BCM controls the wiper motor through the WIPER CONTROL PCB Relay and the WIPER SPEED PCB Relay. During any wiper motor function that uses low speed the BCM supplies the voltage to energize the WIPER CONTROL PCB Relay and battery voltage will be supplied from the WIPER CONTROL PCB Relay through the de-energized WIPER SPEED PCB Relay to the wiper motor low speed control circuit. During high speed wiper motor operation the WIPER CONTROL PCB Relay is energized as in low speed and the BCM provides a ground to energize the WIPER SPEED PCB Relay and the battery voltage is supplied to the wiper motor high speed control circuit. Wiper motor park operation is controlled by the BCM using an input from the park switch within the wiper motor assembly. The BCM supplies the park switch signal circuit 12 volts through a resistor then monitors the circuit. Whenever the wiper motor is out of the park position the park switch signal circuit is closed to ground and nearly all the signal circuit voltage will be dropped across the BCM resistor. When the wiper switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the BCM will continue to operate the motor until the wipers reach the park position. If the ignition is turned OFF while the wipers are in mid-cycle, the wipers will stop immediately where they are and the BCM will park the wipers the next time the ignition is cycled ON.

DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
DTC B3875 00: Wiper High Speed Relay Circuit
DTC B3922 00: Front Wiper Function Select Circuit
Have it checked for DTC'S - diagnostic trouble codes .

The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two relays which determine the desired wiper speed, high or low.
Your best bet , take your vehicle to a qualified repair shop or dealer . Hooking up a factory scan tool to see what the wiper switch inputs to the BCM are correct and outputs to relays are good .

Feb 11, 2017 | GMC Cars & Trucks

1 Answer

2005 ford escape wiper and washer has no power. cant hear it engage when on but was working a week ago. how can i troubleshoot it and find the fuse


Hi Justin , Do you know what a SJB - smart junction box is and where it is located on you escape ?
Windshield Wiper Operation
The smart junction box (SJB) supplies power to the multifunction switch from the SJB fuse 25 (20A) when the ignition switch is in the ON or ACC position. The multifunction switch supplies power to the windshield wiper motor for the HIGH or LOW/INTERMITTENT input, depending on the multifunction switch position selected. The SJB also supplies power directly to the windshield wiper motor from fuse 25 (20A) when the ignition switch is in the ON or ACC position for RUN/PARK operation. When the multifunction switch is in the LOW, HIGH, or INTERMITTENT position, power is supplied to the windshield wiper motor, which moves the wipers off the park position. Once the wipers are off the park position, an internal switch in the windshield wiper motor switches to the run/park position which directs power to the wiper switch then back to the wiper motor. This maintains power to the windshield wiper motor to complete the wipe cycle. When the cycle is complete, the internal switch in the windshield wiper motor switches back to the park position. If the multifunction switch is in the LOW or HIGH position, power is supplied from the multifunction switch and another wipe cycle starts. If the multifunction switch is in the INTERMITTENT position, the windshield wipers remain parked until the internal relay in the multifunction switch supplies power to the windshield wiper motor. The internal relay supplies power after a time delay that is determined by the 1 of 9 intermittent switch settings.

Jan 08, 2017 | 2005 Ford Escape

1 Answer

Looking for the fuse for the wiper motor 2008 chevy impala


WPR fuse 25amp under hood fuse box .
Wiper/Washer System Components
The Wiper/Washer System consists of the following components:
• Windshield wiper/washer switch
• Body control module (BCM)
• Wiper PCB relay
• Wiper high PCB relay
• Windshield wiper motor
• Windshield washer fluid pump
• Windshield washer fluid level switch
• WPR fuse 25 A
• WSW fuse 10 A
This is more then likely not a fuse issue !!!!!!!
Low Speed Operation
When the wiper switch is in the low speed position, ground is applied through the switch internal resistor and the wiper switch low signal circuit to the body control module (BCM). In response to this signal, the BCM energizes the WIPER PCB relay by applying battery voltage through the wiper relay control circuit to the coil side of the relay. This allows battery positive voltage from the WPR fuse to flow through the switch input side of the WIPER PCB relay and out to the switch input side of the WIPER HIGH PCB relay. Since the wiper high relay is de-energized and its switch contacts are normally closed to the low speed control circuit of the windshield wiper motor, the motor will operate at low speed.
Wiper motor low speed operation and the wiper PCB relay can also be commanded ON/OFF by using a scan tool. Refer to Control Module References.
The PCB relays mentioned above are soldered right into the circuit board inside the fuse/relay block under the hood . There are alot of reasons for the wipers not to work ! The fuse could be blown but fuse's don't just blow for no good reason , short to ground , low resistance high current flow etc.... Intermittant !

Power and Grounds
With the ignition in the ON position, accessory voltage is supplied through the 25A WPR fuse to the WIPER PCB relay, the WIPER HIGH PCB relay and the WS WASH PCB relay that are all located in the underhood fuse block. Refer to Wiper/Washer Schematics.
G200 provides ground for the windshield wiper motor and the WIPER PCB relay. G100 provides ground for the windshield washer fluid pump and the windshield washer fluid level switch.

Dec 04, 2016 | Cars & Trucks

1 Answer

Why is my windshield wipers running in the off position, it's like they are running in the intermittent position, but it's in the off position.


When the windshield wiper / washer switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the wiper motor module will continue to operate the wiper motor until the wipers reach the park position. If the ignition is turned off while the wipers are in mid-cycle, the wipers will stop immediately where they are. The wipers will park the next time the ignition is cycled to the ON position.

Schematic Reference: Wiper/Washer Schematics


1

Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections?
Go to Step 2
Go to Symptoms - Wiper/Washer Systems

2

  1. Turn the ignition ON.
  2. Turn the windshield wiper/washer switch OFF.
Are the windshield wipers always on?
Go to Step 3
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3

Disconnect the windshield wiper/washer switch connector.
Are the windshield wipers always on?
Go to Step 4 if yes
Go to Step 7 if no

4

  1. Disconnect the windshield wiper motor connector.
  2. Test the windshield wiper switch signal 1 circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 5

5

Test the windshield wiper switch signal 2 circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 6

6

Test the windshield wiper motor high speed circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 9

7

Inspect for poor connections at the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 8

8

Replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement - On Vehicle in Steering Wheel and Column.
Is the repair complete?
Go to Step 11
--

9

Inspect for poor connections at the windshield wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 10

10

Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement .
Is the repair complete?
Go to Step 11
--

11

Operate the system in order to verify the repair.
Did you correct the condition?
The Wiper / Washer System consists of the following components:
?€¢
Windshield wiper / washer switch


?€¢
Windshield wiper system module / motor


?€¢
Windshield washer fluid pump


?€¢
Windshield washer fluid level switch


?€¢
Instrument panel cluster (IPC)


?€¢
ACC 15-amp fuse


?€¢
WSW 30-amp fuse

Jan 04, 2016 | 2002 Pontiac Bonneville

1 Answer

Monowiper works fine when in full wipe but when in intermittent wipe and park mode it stops 3 inches too high ??


It sounds like the wiper parking position relay has failed. You see, when you turn on the wiper a series of relays on the actuator side are energized and cause the wiper motor to turn on and move the mono-wiper through its arc.

When it reaches the maximum extent of its travel, the wiper circuitry then reverses the arms direction and it swings back. This goes on until you turn off the wipers by turning off the ignition key or turning off the power switch.

When you turn off the wipers, the parking circuitry is activated. The central feature of this part of the wiper circuitry is the parking position relay. As the wiper begins to de-energize the parking position relay is activated. The position relay ensures that the wiper returns gently to the same position each time you turn off the wipers.

If the parking position relay weren't there, the wipers would park wherever they stopped on the windshield. However, the relay circuitry charges when you hit the off button and ensures that the wiper arm sweeps down to the same spot each time. If it does not activate, the wiper arm stops as soon as you turn off the power, as noted. This means that the wiper might, one time, stop in the center of the windshield or it might stop all the way to the left of right.

Aside from its complete failure, manufacturers build in telltales that indicate when the circuit is about to go. One of them is the wiper blade's parked position. Normally, the position relay ensures that the de-energized wiper circuit settles gently to the bottom of the windshield, as noted. However, if the position relay is failing most manufacturers have it park some distance from the bottom of the windshield to give you a head's up that the relay is on its way out.

Since the wiper circuits are fairly involved, it is best to leave it to a trained professional to do the work. However, if you feel you have the expertise to do it, your first step is to obtain the serviced manual for your vehicle. The service manual will give you the step-by-step repair procedure.

Since all parts of the wiper circuitry are related be careful, if you are repairing it yourself, that you replace each component according to the instructions as you might damage something else inadvertently.

Nov 12, 2014 | Cars & Trucks

2 Answers

'07 Impala Wipers Work Intermittently


Did you check for voltage at the wiper fuse? My info says that fuse is hot all the time. Use a digital multimeter. Everything off, take a reading across battery posts, the generic spec for a full charge is around 12.6 volts. You should get close to same reading at the wiper fuse, hopefully. When checking voltage at the fuse, use chassis ground not the other leg of fuse. There are wiper relays, those are pcb relays, they are soldered into the fuse box, you can't pull them out. Your bcm is also involved with those relays. Your multifunction switch basically tells the bcm you turned on your wipers, then the bcm controls voltage or ground for the relays. You can see wire color for hi and lo speed voltage. Maybe a problem with fuse box or wiring circuit if voltage is low? I hope this was of some help?
wiper-byjr2x1a1ejmcnbtj5cbblt2-1-0.jpg

Dec 04, 2017 | 2007 Chevrolet Chevrolet Impala LT

2 Answers

Wipers don't work on intermittent. They run but stop in they middle of the windshield and don't go to the bottom like normal, Then they run again and stop some other spot. When put on continuous they...


Intermittent Speed Windshield Wipers
The intermittent wiper speed is activated with grounds controlled by the multifunction switch inputs to the windshield wiper motor module. The windshield wiper motor module then activates the windshield wiper RUN/PARK relay coil and switches voltage through the windshield wiper high/low relay. The high/low relay remains deactivated supplying the voltage to the wiper motor low speed input and activates the windshield wiper motor. When the windshield wiper motor module receives the grounded input, the motor continues to operate until Hall effect senses magnet to turn off RUN/PARK sense the output to the windshield wiper RUN/PARK software, deactivating the relay and disconnecting voltage to the wiper motor. The windshield wipers remain parked until the windshield wiper motor module completes a time-out and then repeats the intermittent windshield wiper cycle.

  • The intermittent windshield wiper speed does not operate correctly
  • Multifunction switch.
  • Circuitry.
  • Windshield wiper motor.
  • Go To Pinpoint Test D .

Pinpoint Test D: The Intermittent Windshield Wiper Speed Does Not Operate Correctly
Normal Operation During normal operation, the windshield wiper motor receives voltage at all times through battery junction box (BJB) fuse 1 (30A), circuit 65 (DG). The windshield wiper motor also receives power with the ignition switch in RUN or ACC positions through central junction box (CJB) fuse 33 (15A), circuit 1002 (BK/PK). Ground is provided to the windshield wiper motor through circuit 676 (PK/OG) and circuit 57 (BK). The run/park and high/low relays are contained in the wiper motor electronics. Mode of operation is dependant on the signal(s) received from the multifunction switch.
    Possible Causes
  • Multifunction switch
  • Open in circuit 57 (BK), 56 (DB/OG), 61 (YE/RD) or 63 (RD)
  • Windshield wiper motor
PINPOINT TEST D: THE INTERMITTENT WINDSHIELD WIPER SPEED DOES NOT OPERATE CORRECTLY Test Step Result / Action to Take D1 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.
  • Did the multifunction switch pass the component test?
Yes
GO to D2 .

No
INSTALL a new multifunction switch. REFER to Section 211-05 . TEST the system for normal operation. D2 CHECK CIRCUIT 57 (BK) FOR OPEN
  • Measure the resistance between multifunction switch C202b-6, circuit 57 (BK), harness side and ground.
  • Is the resistance less than 5 ohms?
Yes
GO to D3 .

No
REPAIR the circuit. TEST the system for normal operation. D3 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 multifunction switch C202b harness side and windshield wiper motor C125 harness side:

    Multifunction Switch C202b Windshield Wiper Motor C125 Pin 2, circuit 56 (DB/OG) Pin 10, circuit 56 (DB/OG) Pin 4, circuit 61 (YE/RD) Pin 1, circuit 61 (YE/RD) Pin 1, circuit 63 (RD) Pin 9, circuit 63 (RD) Pin 3, circuit 58 (WH) Pin 11, circuit 58 (WH)
  • Is the resistance less than 5 ohms?
Yes
GO to D4 .

No
REPAIR the circuit(s) in question. TEST the system for normal operation. D4 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 D5 .

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation. D5 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.
  • Did the windshield wiper motor pass the component test?
Yes
The system is operating correctly at this time. Concern may have been caused by incorrect binding pivot arm adjustment. REFER to 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.

Feb 19, 2018 | 2006 Ford F 350 Super Duty

1 Answer

Windshield Wipers on 2007 Altima Quit on High


It might be either switch itself or wiper relay.
Ufortunatly I don't know location of the relay.
You can actually find relay by noise , put the switch on intermittent position and see where the cliking coming from.

Jun 30, 2010 | 2007 Nissan Altima 3.5 Sedan

1 Answer

My windshield wipers wont turn on


This information is out of my manual, I hope it helps you, Ian
WIPERS/WASHERS
DESCRIPTION
FRONT WIPER/WASHER SYSTEM
The windshield wipers can be operated with the
windshield wiper switch when the ignition switch is
in the RUN or ACCESSORY positions. The windshield
wiper system is protected by a 30 amp fuse (9)
located in the Power Distribution Center (PDC) part
of the Integrated Power Module (IPM) in the engine
compartment. The wiper/washer switch is integral to
the multi-function switch. It is a resistive MUX
switch that sends inputs to the BCM to operate the
wiper/washer system.
REAR WIPER/WASHER SYSTEM
The rear windshield wiper and washers can be
operated when the ignition switch is in the RUN or
ACCESSORY positions.
OPERATION
FRONT WIPER/WASHER SYSTEM
The windshield washer circuit is protected by a 9
amp PTC located in the Junction Block. The wiper
motor has permanent magnetic fields. The speeds are
determined by current flow to the appropriate set of
brushes inside the motor. The current flow is controlled
by the multi-function switch stalk mounted
wiper switch, high speed/low speed relays located in
the Power Distribution Center (PDC) part of the
Integrated Power Module (IPM) in the engine compartment.
The speed sensitive intermittent wiper is
controlled by the Body Control Module (BCM). The
intermittent mode, with the vehicle traveling greater
than 10.4 mph, has a range of 0.5 to 18 seconds.
With the vehicle traveling less than 10.4 mph, and
the time delay is not adjusted, time delay doubles to
a range of 1 to 36 seconds. The wiper arms will park
at the base of the windshield just above the cowl
cover after the wiper switch is turned OFF.
WIPERS/WASHERS (Continued)
The windshield wiper motor and linkage is located
in an integral wiper unit at the rear of the engine
compartment. The wiper unit must be removed to
gain access to the wiper motor.
REAR WIPER/WASHER SYSTEM
When continuous rear wiper operation is required,
the Body Control Module (BCM) will provide ignition
ON voltage to the rear wiper motor. When the wiper
switch is turned OFF, the BCM provides circuit
ground to operate the motor until the wipe cycle is
complete and the wiper arm returns to the base of
the rear window.
When intermittent rear wiper mode is selected, the
wiper motor will cycle every 7 seconds. The intermittent
delay time is also adjusted based upon vehicle
speed. With the vehicle traveling greater at 50 mph,
the cycle changes to every 5 seconds. DIAGNOSIS
AND TESTING
DIAGNOSIS AND TESTING - FRONT WIPER
SYSTEM
The windshield wiper system operates in several
modes:
† Low and high speed normal wipe
† Speed sensitive intermittent wipe
† Wipe after wash
† Pulse wipe
† Park (switch OFF)
The windshield wiper circuits are continuously
monitored and controlled by the Body Control Module
(BCM). If a problem occurs in the electronic components,
wiring, switch (except integral motor park
switch) and wiper motor a Diagnostic Trouble Code
(DTC) will be stored in the BCM memory. DTC’s can
be retrieved using a DRB IIIt scan tool. Refer to the
proper Body Diagnostic Procedures manual for DTC
descriptions and retrieval information.
The windshield wiper park switch and circuit is
monitored by the BCM. The park switch and circuit
can be tested using the Wiper System Diagnosis
table.
DIAGNOSIS AND TESTING - REAR WIPER
SYSTEM
The rear window wiper system operates in several
modes:
† Continuous wipe
† Intermittent wipe
† Wash
† Wipe after wash
The windshield wiper circuits are continuously
monitored and controlled by the Body Control Module
(BCM). If a problem occurs in the electronic components,
wiring, switch (except integral motor park
switch) and wiper motor a Diagnostic Trouble Code
(DTC) will be stored in the BCM memory. The
DTC(s) can be retrieved using a DRB IIIt scan tool.

Aug 13, 2009 | Mopar Chrysler Town & Country 2001-2008...

1 Answer

Wipers won't stop wiping.


Sounds like your intermittent wiper circuit is defective. Normally the intermittent feature is engaged by one of the functions on the multi-function switch (usually on the steering column). The circuit of the intermittent wiper periodically activates a relay that closes across the "Wiper On" switch. Your intermittent wiper circuit is likely defective and holding its relay closed (or the relay is stuck closed), thereby keeping the wipers on. Note: The wiper motor has an internal switch that opens when the wipers are in the park position and that is designerd to stop the wipers in the park position. When you turn on the wipers (or the intermittent relay is closed), the motor's internal switch is shunted such that the wiper does not stop at the park point of the cycle.

Apr 27, 2009 | Ford Explorer Cars & Trucks

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