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  #11  
Old 10-30-2013, 06:38 AM
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If anyone with a working rear wiper has time and wants to help, could I ask you to perform the test on BE-25 for intermittent operation for me and post up your results (specifically see if the voltage rises right away or if it's delayed by 6-10 seconds)? You have to take off the rear hatch handle (2 M8 screws), and pop off the plastic trim piece. Then unscrew 1 M8 screw that holds on the relay and unplug the relay. Then take it to your battery with a multimeter and some test leads and alligator clips. Takes 10-15 minutes.

In the post above, the wiring has me spooked. L-B from the relay has no path to ground unless I plug in BR2 in the quarter panel area. Here's the thing. L-B doesn't run through BR2. It runs through BR1, at which point it also doesn't have a path to ground. I think L-B might be shorting with L possibly in the upper hatch area. But I would like to confirm my relay operation before tearing in that deep.
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  #12  
Old 10-30-2013, 08:46 AM
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Without digging into your test results, my guess is that the relay is triggering the intermittent function without the required ground input from L-B. Maybe the input transistor is failing? If you can swap the relay, it might solve the entire issue. Or if you really want to diagnose it, you could pull the L-B input up to +12v to see if that shuts it off.
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  #13  
Old 10-30-2013, 08:48 AM
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If someone wanted to swap relays with me that would be awesome too

Working on pricing for a new relay, but I'm thinking I won't like the price
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Matt Miller
TLCA# 13684
Rising Sun Bio
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, soon to lose the Sanden OBA to go back to factory emissions
1996 FZJ80 1FZ-FE factory lockers + Safari Turbo , CDL switch, cup holder, AATLAS1X leather, heated seats and JDM switches
2000 Tundra Limited TRD 2UZ-FE SOLD
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  #14  
Old 10-30-2013, 09:06 AM
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You could try a bone yard or part out for better pricing.
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  #15  
Old 10-31-2013, 06:24 AM
blkprj80 blkprj80 is offline
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This might help. Hopefully yours isn't toast like his.
http://forum.ih8mud.com/80-series-te...reference.html
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  #16  
Old 10-31-2013, 08:47 AM
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Quote:
Originally Posted by blkprj80 View Post
This might help. Hopefully yours isn't toast like his.
http://forum.ih8mud.com/80-series-te...reference.html
Thanks for that link, I hadn't seen that one yet.

I cracked mine open this morning and it looks perfectly brand new. How reliable are transistors? They are solid state so I would assume they are usually not a concern.
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TLCA# 13684
Rising Sun Bio
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, soon to lose the Sanden OBA to go back to factory emissions
1996 FZJ80 1FZ-FE factory lockers + Safari Turbo , CDL switch, cup holder, AATLAS1X leather, heated seats and JDM switches
2000 Tundra Limited TRD 2UZ-FE SOLD
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  #17  
Old 11-01-2013, 06:22 PM
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I got a used relay today from classic cruisers in salida. Plugged it in and wiper acts the same, stuck on intermittent. So unless two relays which don't appear to have failed have failed exactly the same way, I'm ruling the relay out.
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Matt Miller
TLCA# 13684
Rising Sun Bio
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, soon to lose the Sanden OBA to go back to factory emissions
1996 FZJ80 1FZ-FE factory lockers + Safari Turbo , CDL switch, cup holder, AATLAS1X leather, heated seats and JDM switches
2000 Tundra Limited TRD 2UZ-FE SOLD
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  #18  
Old 11-01-2013, 07:10 PM
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Hmmm. Does it still do intermittent with L-B unplugged?
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  #19  
Old 11-01-2013, 07:50 PM
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Default 80 series rear wiper issue

It stops if I unplug the L-B at the BT1 connector in the rear hatch. I have some more diagnostics to do, I have a suspicion that the wiring is doing something funky at the top of the rear hatch, between BT1 and BR1 in the quarter panel.
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Matt Miller
TLCA# 13684
Rising Sun Bio
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, soon to lose the Sanden OBA to go back to factory emissions
1996 FZJ80 1FZ-FE factory lockers + Safari Turbo , CDL switch, cup holder, AATLAS1X leather, heated seats and JDM switches
2000 Tundra Limited TRD 2UZ-FE SOLD
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  #20  
Old 11-02-2013, 09:28 PM
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Default 80 series rear wiper issue

Quote:
Originally Posted by 60wag View Post
Hmmm. Does it still do intermittent with L-B unplugged?
L-B has 220 ohms of resistance to the bolt on the jack holder (ground) with the switch off. With the switch on intermittent there are 25 ohms. As a comparison, L-G has infinite resistance when the switch is off and 3.5 ohms with the switch on. This is measuring from the plug at the relay.

The body side of L-B at connector BR1 has 327 ohms with the switch off, 3.5 ohms with the switch on intermittent. It has infinite resistance in the hatch direction. L-G has infinite resistance with the switch off and 3.5 ohms with the switch on.
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Matt Miller
TLCA# 13684
Rising Sun Bio
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, soon to lose the Sanden OBA to go back to factory emissions
1996 FZJ80 1FZ-FE factory lockers + Safari Turbo , CDL switch, cup holder, AATLAS1X leather, heated seats and JDM switches
2000 Tundra Limited TRD 2UZ-FE SOLD

Last edited by subzali; 11-04-2013 at 06:04 AM.
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