My wiper switch was 'sticky' and I couldn't locate the low and high speed detents.
After disassembly I found the shaft was worn out causing it to hang up in the washer motor contact. Decided to repair instead of replace due to the $100 price tag on these. Thought I'd share what I did.
Thread on removing switch: How do you remove wiper switch on dash?
Different switch than mine disassembly: 40 series wiper switch repair
My FJ40 is a 78 produced 12/77 and from what I have found is the same for 9/1977 - 10/1984.
The original shaft is 4mm square aluminum and as you move it through the speeds it passes through a small steel plate that is the washer contact, ie rotate the shaft to move contact, it wears a little metal each time.
Disassembly is:
-fold open the 2 metal strain relief tabs on wiring
-fold back the 4 little steel tabs on the phenolic board
-lift off phenolic board and wiring upward away from gravity or all the bits will scatter
-lift up black plastic box, note there is a contact on top with 2 springs behind it and on the bottom is a spring and ball bearing for detent
-pull shaft out, catch the spring and washer contact
After disassembly I found the shaft was worn out causing it to hang up in the washer motor contact. Decided to repair instead of replace due to the $100 price tag on these. Thought I'd share what I did.
Thread on removing switch: How do you remove wiper switch on dash?
Different switch than mine disassembly: 40 series wiper switch repair
My FJ40 is a 78 produced 12/77 and from what I have found is the same for 9/1977 - 10/1984.
The original shaft is 4mm square aluminum and as you move it through the speeds it passes through a small steel plate that is the washer contact, ie rotate the shaft to move contact, it wears a little metal each time.
Disassembly is:
-fold open the 2 metal strain relief tabs on wiring
-fold back the 4 little steel tabs on the phenolic board
-lift off phenolic board and wiring upward away from gravity or all the bits will scatter
-lift up black plastic box, note there is a contact on top with 2 springs behind it and on the bottom is a spring and ball bearing for detent
-pull shaft out, catch the spring and washer contact