Question about 1993 Toyota 4Runner
I have a problem with the controller that operates my intermittent wipers and my windshield washer fluid reservoir pump. For a while now the pump would only work when the adjustable steering wheel column was adjusted just so. Now neither works. I'm thinking that repeated adjustment (at least 4 times a day for more than 10 years) of the steering column has caused breaks in the wires that control these two functions. Is this a simple fix, or does it involve an expensive wiring harness? The truck is 17 years old and still runs well but I try to keep repair expense to a minimum.
Get the wiring harness at a salvage yard. I doubt they will charge more than $5.
But why change the steering adjustment all the time?
It is easier to just change the seat adjustment.
If you look at trucks, buses, etc., they all have the wheel much up and flatter than most cars. That is because that is actually the safest and best for people who know how to drive safely. You have less control when the wheel is down towards you more, so it is not a good idea.
Posted on Jul 29, 2010
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Posted on Jan 02, 2017
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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
Body control module (BCM)
Wiper 1 relay
Wiper 2 relay
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
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 .
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