Question about 1991 Ford Escort
Best if you have a wiring diagram of at least the part of
the curcuit your going to work on (wiper circuit)
That applies to any electrical issue,simply can't start your
checking or testing without a road map.
If it were to guess for you,I would say the motor has failed
Even with a wiring diagram it isn't always easy to jump it
once out of the car,to test it. You won't have the internal
wiring diagram for the motor.
The switch you can turn on & use your volt meter at the
wiper motor with it disconnected,but again need to have the
diagram to probe the correct wires
Posted on Dec 08, 2012
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Posted on Jan 02, 2017
The actual assembly arm that you turn on your windshield wiper (that says all of the controls on it) was bad and was causing the fuses to blow and burning up the motor. It was replaced and it works now as well as the a/c and heat which was not working before this fix.
Posted on Jan 16, 2009
Removal & Installation
Always rotate the wiper operating arm in a clockwise motion or damage to the motor could occur.
Here is the picture of the motor....it is the round object in the middle of the picture that looks like a can and has a square block on the end of it.
You have to remove the cowl vent panel....just under the windshield. $64.00 for a new motor.
Posted on Oct 01, 2009
Testimonial: "Fast and accurate response."
You can't check these modules unless you have the specs on them.good luck on finding them, but if you do let me know please. I've had the same problems on fords. they hide these modules on the passenger side right side of the glove box, just under the dash. usually the only box there
Posted on Jun 18, 2010
SOURCE: windshield wipers do not work
Crown Victoria juts ahev one fuse/relay for wiper, check in Power Distribution Box, position 110, 30AMP (Cartridge fuse) for Wiper Module.
Posted on Oct 27, 2010
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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.....
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