HI all,
My everyday truck, a 2004 Toyota Tacoma SR5 w/tilt steering wheel has a problem I can't seem to figure out. Suddenly the wiper no longer works on intermittent and low speed. It only runs on high speed, and does not "park" the blades either. I tested the motor, and it does high, low, & Park, so I bought a new switch ($150) but no change.
Any ideas? The rains are coming!
T'ake care,
David D.
Stay out of the mountains.
Trade it in.
David, try this page, www.ncttora.com/fsm/2003/index.html, pretty good wiring diagrams and info. KB
Ricks,
TOOO FUNNY!
Kieth, WOW~~ What a great resource--at least now I know where to trace wires. THANK YOU!
David
It may be possible that your ignition switch is the cause of your problem.
I was having problems with the accessories (headlights, fan blower motor running only in high, etc.) with my Pontiac Grand Prix.
I found the cause and solution to my problem after searching the internet and doing some simple diagnosis with a multi-tester.
It turned out to be the ignition switch which actually contains six individual open/close contact switches within the housing. Circuits for accessories that operate only when the ignition switch is on such as windshield wipers typically run through the ignition switch.
I removed the switch from the steering column, disassembled it and found three sets of contacts hard carbon build-up do to arcing from opening and closing. Cleaning the contacts and reassembling the switch solved my problem.
Does the wiper system have a resistor block to control the wiper speed? If so, change that out - usually when a resistor block fails, the component it controls runs only in high speed...
Greg,
No resistor block, uses a third brush according to the wiring diagram.
Erik, That doesn't show in the wiring diagram, but one never knows!
Thanks for the hints
David
Clean the ground strap and connection.
Is there not a contact set in the motor assembly for the park function? it could be stuck.
That's why Model T's didn't come with windshield wipers. Ahh.. the good old days.