Question about 1999 Ford Explorer

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Window washer switch

I replaced the window washer switch. But still have the problem of the wiper speeds. Only the high and off works. what else could it be?

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  • PAUL HAWKINS Dec 08, 2008

    thanks I'll give it a try.

  • PAUL HAWKINS Dec 20, 2008

    I replaced the motor but it still does the same thing. Any more thoughts?

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Wiper motor

Posted on Dec 07, 2008

  • Ricardo Loranca
    Ricardo Loranca Dec 20, 2008

    might be a defective switch

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2003 Pontiac Montana wipers not working how to fix


First you need a wiring diagram, free at http://www.bbbind.com/free_tsb.html Then you need a DVOM - digital volt ohm meter to test the circuit . Then if your not familiar with automotive electrical systems testing ,go on youtube an check out Electric Testing Techniques You Need to Know Also having a factory diagnostic trouble shooting chart would also be usefull . You could just start replacing parts , you mite get lucky . The wiper motor is a high fail part , so is the switch ..You could find the fuse is blown ! But fuse's don't usually blow without a reason . Short to ground , low resistance . ( high current flow) Also knowing how they work and what all is involved in making them work.
The Wiper/Washer System consists of the following components:
• Windshield wiper/washer switch
• Windshield wiper motor module
• Windshield wiper motor
• Windshield washer pump motor
• FRT/WPR/WSHR 25A fuse

Wiper/Washer System Operation
The windshield wiper motor module is part of the windshield wiper motor cover and controls wiper motor operation. The windshield wiper motor is a 2 speed motor and is operated at low speed in all modes except HIGH. The accessory voltage supply circuit to the windshield wiper motor assembly is used to operate the wiper motor in all of the low speed modes. The accessory voltage supply circuit to the windshield wiper/washer switch is used to supply the windshield wiper switch signal circuits and the wiper motor high speed circuit.
When the wiper/washer switch is in the LOW position voltage is supplied through a 24K ohm resistor within the switch to the windshield wiper switch signal 2 circuit, and accessory voltage is supplied to the windshield wiper switch signal 1 circuit. The reduced voltage from the wiper switch signal 2 circuit and accessory voltage from the wiper switch signal 1 circuit causes the wiper motor module to close the wiper motor accessory voltage supply circuit to the wiper motor low speed terminal.
Windshield wiper/washer system MIST operation is identical to LOW operation except that the MIST switch is a press and release type. When the wiper switch is moved to the MIST position and released, low speed wiper motor operation is started and will continue until 1 cycle is complete. If the wiper switch is moved to the MIST position and held, the windshield wiper motor will operate in the LOW mode until the switch is released.

Don't the wipers work in any mode ?
1
Did you review the Wiper/Washer System description and operation and perform the necessary inspections?
YES - Go to Step 2
NO - Go to Symptoms - Wiper/Washer Systems
2
Turn ON the ignition , with the engine OFF.
Operate the windshield wiper/washer switch through all the switch positions.
Does the windshield wiper/washer system operate normally?
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
NO - Go to Step 3
3
Turn OFF the ignition.
Disconnect the harness connector of the windshield wiper motor.
Turn the ignition ON, with the engine OFF.
Connect a test lamp from the accessory voltage circuit of the windshield wiper motor to a good ground.
Does the test lamp illuminate?
YES - Go to Step 4
NO - Go to Step 13
4
Connect a test lamp from the accessory voltage circuit to the ground circuit of the windshield wiper motor.
Does the test lamp illuminate?
YES - Go to Step 5
NO - Go to Step 14
5
Connect a test lamp from the signal 2 circuit of the windshield wiper switch to a good ground.
Press the windshield washer switch.
Does the test lamp illuminate?
YES - Go to Step 11
NO - Go to Step 6
Let me know if you make it this far and i will send rest of diagnostic's

Nov 25, 2016 | 2003 Pontiac Montana

1 Answer

I'm driving in rain, wipers working good, all of a sudden they quit! I drive for 15 min, check again, they work for a while, then quit again...what in the problem?


If your not familiar with automotive electronics an module control of components , I suggest you take it to the dealer . They have the tools to diagnose this type problem !
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


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.
High Speed Operation When the wiper switch is in the high speed position, ground is applied through the windshield wiper switch high signal circuit to the body control module (BCM) indicating the wiper high speed request. In response to this signal, the BCM then energizes the wiper PCB relay, as stated above, and the wiper high PCB relay by applying ground through the control circuit to the coil side of the relay. With the wiper high relay energized and its switch contacts closed to the high speed control circuit of the wiper motor, the motor will operate at high speed.
Wiper motor high speed operation and the wiper high speed PCB relay can also be commanded ON/OFF by using a scan tool. Refer to Control Module References.
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
You could Have a switch problem , BCM problem ,PCB relay problem , the pcb relays are non serviceable an the whole under hood fuse box would need to be replaced . Malfunctioning motor bad ground some where etc.....

Dec 20, 2015 | 2008 Chevrolet Impala

1 Answer

Wipers dont work


This is a complex wiper system . Here are all the components involved !
The Wiper/Washer System consists of the following components:
?€¢
Windshield wiper/washer switch


?€¢
Body control module (BCM)


?€¢
Wiper 1 relay


?€¢
Wiper 2 relay


?€¢
Wiper diode


?€¢
Windshield wiper motor


?€¢
Windshield washer pump


?€¢
Windshield washer nozzles


?€¢
Windshield washer solvent container


?€¢
Windshield wiper arm and blade assemblies


?€¢
Windshield wiper transmission


?€¢
WIPER/SW 10A fuse


?€¢
WIPER 25A fuse


Circuit/System Description
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 windshield wiper motor park operation is controlled by the BCM. The BCM recieves an input from the park switch to determine wiper blade position. When the wiper blades are at the bottom of the windshield glass in park position the wiper park switch will open and the circuit will be pulled up to B+ by the BCM. The park signal will be pulled to ground by the wiper motor park switch while the wiper blades are not in the park position.
The BCM controls the windshield wiper motor through two output controls, controlling two relays which determine the desired wiper speed, high or low
Diagnostic Trouble Codes (DTCs)
The body control module (BCM) monitors the voltage on the windshield wiper switch signal 2 circuit for diagnostic purposes. If the circuit is shorted to voltage while the driver is commanded OFF, the BCM will store DTC B3715. If the circuit is shorted to ground while the driver is commanded ON, the BCM will store DTC B3715. Refer to DTC B3715.
It would be best to have a factory scan tool to diagnose this problem . it would make it easier anyway .
It

Dec 05, 2015 | Cars & Trucks

2 Answers

What would cause the windshield wipers on my recently purchased Jeep Patriot Sport work on every speed except the high speed. High speed doesn't work at all.


The intermittent switch has a bad contact in it for the high speed, i would say, most likely will have to replace it.

Sep 15, 2014 | 2008 Jeep Patriot Sport

1 Answer

Fuse number for winderwiper


Hi Maddie, I'm glad to help! Below, I have posted a diagnostic procedure to see why the wipers are not working on your Dakota. Hope this helps and have an awesome day Maddie!



DIAGNOSIS
WIPER MOTOR

The following are wiper motor system problems,
tests to be performed to locate the faulty part, and
the proper action to be taken. If the malfunction involves
only the delay mode, switch, or wiring, see the
diagnosis for Intermittent Wipe Module and Wiper/
Washer Switch.
CONDITION
Motor will not run in any wiper/washer
switch position.
PROCEDURE

(1) Check fuse 10 in the fuseblock module. If OK,
go to step 3. If not OK, replace fuse and go to next
step.
(2) Check motor operation in all wiper/washer
switch positions. If not OK and fuse blows, go to step
5. If not OK and fuse is OK, go to next step.
(3) Place wiper/washer switch in LOW position and
listen to motor. If you cannot hear it running, go to
next step. If motor is running, check motor output
shaft. If output shaft is not turning, replace motor
assembly. If it is turning, drive link to output shaft
or linkage is not properly connected. Replace worn
parts and/or properly connect drive link to the motor
output shaft.
(4) Connect a voltmeter between motor terminal L
and ground strap (Fig. 1). If there is little or no voltage
(less than 1 volt), move negative test lead from
the ground strap to battery negative terminal. If an
increase in voltage is noticed, the problem is a bad
ground circuit. Make sure the motor mounting is free
of paint and that mounting fasteners are tight. If
there is still no indication of voltage, the problem is
an open in wiring or faulty wiper/washer switch. If a
small increase (greater than 3 volts) in voltage is observed,
the problem is a faulty motor assembly.
(5) Disconnect motor wiring connector and replace
fuse. If fuse does not blow, motor is defective. If fuse
blows, wiper/washer switch or wiring is at fault.
CONDITION
Motor runs slowly at all speeds.
PROCEDURE

(1) Disconnect wiring harness connector at motor.
Remove wiper arms and blades. Connect an ammeter
between battery and terminal L on motor (Fig. 2). If
motor runs and average ammeter reading is more
than 6 amps, continue to next step. If motor runs
and average ammeter reading is less than 6 amps, go
to step 3.
(2) Check wiper linkage or pivots for binding or obstruction.
Disconnect drive link from motor. If motor
now runs and draws less than 3 amps, repair linkage
system. If motor continues to draw more than 3
amps, replace motor assembly.
(3) Check motor wiring harness for short between
high and low speed circuits. Connect a voltmeter or
test lamp to motor ground strap. Set wiper/washer
switch to LOW position. Connect other lead of voltmeter
(test lamp) to terminal H of the wiring harness.
If voltage is present, there is a short in the
wiring or wiper/washer switch. If no voltage is
present, go to next step.
(4) Set wiper/washer switch to HIGH position.
Move voltmeter (test lamp) lead from terminal H to
terminal L of the wiring harness. If voltage is
present, there is a short in the wiring or wiper/
washer switch.
CONDITION
Motor will run at high speed, but not at low
speed.
Fig. 1 Voltmeter Between Terminal L and Ground

Motor will run at low speed, but not at high speed.
Fig. 2 Ammeter Between Terminal L and Battery
WIPER AND WASHER SYSTEMS 8K - 3

Apr 26, 2014 | 1995 Dodge Dakota

2 Answers

Windshield wipers


Would need to scan vehicle to insure the wiper speeds are controlled by the General Module or a wiper intermittent relay....if relay...would locate and replace...if general module.....a reprogram or software update could be in order...possibly replacement.

Scott, Porsche Master Tech 35 years

Jan 12, 2014 | 2002 Jeep Liberty

1 Answer

Where is the wiper relay


A wiring diagram doesn't show a relay, just a 25 amp fuse in fuse panel under driver's side of dash. Intermittent working is usually from a loose or poor or corroded connection, or the switch is old and tired, or the motor is old and tired.
Here is one way to check, if you have a test light: when the wipers are not working with wiper switch on high, and key is on, pull off the connector to the wiper/washer motor module (in the engine bay, on the firewall) and check if the purple wire has power. If it does, you probably need to replace the module. Inside the module is a park relay switch (to return wipers to down position when turned off) and a circuit breaker between the motor and ground.
If the purple wire does not have power when key is on and wipers on high, the connection is lost between the switch and the module, or the switch may be malfunctioning. The switch has 5 wires, white wire from 25 amp fuse (power in to switch), a pink wire (for the washer motor), a purple wire (high speed wipers), a dark green wire (low speed wipers), and a gray wire (for the park relay switch inside the wiper/washer motor module). If you see a yellow wire also at the module, that is part of the low speed wiper circuit (the dark green wire) coming from the park relay switch and then to the motor.
Good luck. Post back if further questions, or need more help.

Jun 06, 2013 | 1983 Chevrolet Celebrity

2 Answers

Wipers only work on high speed. washer pump work too. I have no low speed or delay for wipers. Is this a switch problem or is there a relay modual under the hood that could be bad


Hello, this is a very common problem for Chevrolet. Your wiper motor control module is bad. It's mounted directly onto the wiper motor. On some models you can replace the "pulse board" inside the control module. If not you need to replace the entire wiper motor control module. It depends on your level of skill and parts availability.

Feb 02, 2010 | 1999 Chevrolet Express

1 Answer

2000 Jeep Cherokee Sport, window washing does not work


the little pump inside the washer fluid reservoir is bad, replace it

Dec 27, 2008 | 2000 Jeep Grand Cherokee

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