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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 ?
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
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
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
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
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
the switch that you turn to ge the wiper to wipe -- controls the power to the wiper motor. You need check the wiring from the switch to the wiper motor -- for break or disconnects. you may have to replace the switch oor install a dash mount switch instead And bypass the stock switch.
It is either time to replace the wiper motor or the arm has disengaged from the transmission. does the motor make any sounds when the wiper switch is activated? Also, does one work and not the other? If neither wiper moves or makes the usual noises i would suspect the switch inside the car. hope this helps and good luck.
Sometimes the wiper motor will develop a bad spot internally. If the wipers seem to stop while they were actively operating fine, try leaving the switch on and manually move the wipers by hand, in either direction. If they start moving again after you move them by hand, then your motor is bad. If not, it may very well be what was suggested concerning the wires in the steering column; However the steering column solution can be tested by turning on the wipers and then moving the steering wheel left and right, if they turn off or on, then the wires are likely rubbing against metal, which will wear off the plastic insulation and short out. If no fuse has ever blown, then it is most likely a bad motor or switch. Best wishes!
Remove the linkage from the wiper motor. Turn the wipers on then off. This will set the motor in the park position. Move the wipers by hand to there normal off position. Reinstall the linkage onto the wiper motor. The wipers should now park or stop in the correct position.
Windshield Wipers Continue to Run When Turn Signal and Windshield Wiper Switch Are Turned OFF
Damaged turn signal and windshield wiper switch .
Damaged windshield wiper motor .
Damaged windshield wiper control module.
Wiper Motor Ground (Park)
Wiper Module to Wiper Motor (Park Switch)
Wiper Motor Power (Park Feed)
Wiper Motor Common (RUN)
Wiper Motor LO
Wiper Motor HI
Windshield Wiper System
The windshield wiper system consists of :
Windshield wiper motor (17508) (F-type).
Windshield wiper control module.
Turn signal and windshield wiper switch (13K359).
The windshield wiper control module is:
Located at the instrument panel fuse panel.
The windshield wiper motor is:
Attached to the cowl top extension (021A36) .
Connected to windshield wiper mounting arm and pivot shaft (17566) .
The turn signal and windshield wiper switch features a:
Rotary wiper switch.
Push type washer actuator.
Has a two-speed, permanent magnet, three brush electric windshield wiper motor .
The windshield wiper motor has a brush rigging that permits selection of low or high speed.
When the turn signal and windshield wiper switch is in the LO position, the common brush and the blue/orange wire brush are used, and the windshield wiper motor operates at low speed.
When the turn signal and windshield wiper switch is in the HI position, the common brush and the white wire brush are used.
In HI position, electric current will bypass a portion of the armature winding causing the windshield wiper motor to operate faster.
When the turn signal and windshield wiper switch is moved to the OFF position, the windshield wiper motor will continue at low speed until the park switch outer contacts open.
When the park switch contacts open, the windshield wiper motor stops in the park position.
When the turn signal and windshield wiper switch is in the interval position:
The wipers make single wipes separated by pauses.
The rotary switch is on the end of turn signal and windshield wiper switch .
The length of the pause can be set from approximately 1 to 17 seconds.
Length of pause decreases as the rotary switch is rotated away from off.
Length of pause increases as the rotary switch is rotated toward off.
While in the interval wiper mode:
It is normal to hear a slight click at the beginning of each on/pause cycle.
NOTE: When using interval wipers, the first wipe may not occur until after a pause of up to 17 seconds.
Under the cowl (it is a plastic piece that the windshield wipers come out of) are the wiper arms that connect to the wiper motor. There are plastic parts that hold the wiper arms to the wiper motor. Lots of time these plastic parts dry out and break and the wiper arm will fall off the wiper motor. I would bet if you tried to move one of the wipers by hand both of them would move with little resistance. This would tell me that the wiper arms are disconnected from the wiper motor. The parts to fix this are easy to get. I know the motormite HELP line of parts used to have the plastic bushings to fix this problem.