Rear Wiper Intermittent Delay Timer Mod

[toy_toronto]

Originally Posted by CTScott

Attachment 43091
For the front wiper you would insert the module in line with the blue wire in pin 3 of the connector shown as C14 (AKA D6 on the Yaris) to make the fronts intermittent with the standard Yaris stalk.

Trying to implement a delay for the fronts, I inserted the module in line with pin 3 of D6 (blue) as you suggested and turned on the module --for each interval the motor receives a pulse but leaves the wiper in odd positions

I was looking at the EWD of the wiper switch assy. and noticed it might be possible while the switch is in the OFF position perhaps I can supply +12v to pin 1 (+S white) to make the wiper swipe then go back to "park" position... but I could be reading the diagram wrong, lol.


-toy

[CTScott]

Originally Posted by toy_toronto

Trying to implement a delay for the fronts, I inserted the module in line with pin 3 of D6 (blue) as you suggested and turned on the module --for each interval the motor receives a pulse but leaves the wiper in odd positions

I was looking at the EWD of the wiper switch assy. and noticed it might be possible while the switch is in the OFF position perhaps I can supply +12v to pin 1 (+S white) to make the wiper swipe then go back to "park" position... but I could be reading the diagram wrong, lol.


-toy

+S is the feedback from the cam switch, which tells the circuit in the stalk when it is OK to drop power and have the wiper land in the correct place. You can try connecting pin 2 to pin 3, which is what happens when you tap the stalk for mist mode.

This is what made life easier with my module, as I use a microcontroller, so I can program time intervals, rather than having to calculate RC time constants.

On another note, I got the Lexus EWDs last night and have bad news about your stalk. The RX330 with the "rain-sensing wipers" has an ECU that takes the sensor input and controls the wipers. It takes the place of the circuit that is built into our OEM stalk or the Prius, etc. ones with the intermittent fronts. This means that your stalk alone will not do the intermittent thing. You would either need the Auto Wiper ECU, or could use the Lexus stalk and use the auto position for your module. The "sensitivity" ring is just a potentiometer connected to pins 7 and 8, so you could use that in place of the pot on your board. It goes from 0 to 3.2K ohms.

[Lil Abner]

Originally Posted by CTScott

The "sensitivity" ring is just a potentiometer connected to pins 7 and 8, so you could use that in place of the pot on your board. It goes from 0 to 3.2K ohms.

I like that idea. But with only 0-3.2K ohms, you might need something to multiply the resistance up to around 100K or so?

[toy_toronto]

Originally Posted by CTScott

+S is the feedback from the cam switch, which tells the circuit in the stalk when it is OK to drop power and have the wiper land in the correct place. You can try connecting pin 2 to pin 3, which is what happens when you tap the stalk for mist mode.

When I tried this (i.e. short blue and blk wires), it seemed to work at first and wiper did "park" but after trying it a couple of times I began to notice that the jump wires I was using got very hot then everything died. I had to replace two fuses, I blew fuses #3 (WIP, 25A) and #15 (AM1, 25A). I don't think I'm going to try that again, lol.

On another note, I got the Lexus EWDs last night and have bad news about your stalk. The RX330 with the "rain-sensing wipers" has an ECU that takes the sensor input and controls the wipers. It takes the place of the circuit that is built into our OEM stalk or the Prius, etc. ones with the intermittent fronts. This means that your stalk alone will not do the intermittent thing. You would either need the Auto Wiper ECU, or could use the Lexus stalk and use the auto position for your module. The "sensitivity" ring is just a potentiometer connected to pins 7 and 8, so you could use that in place of the pot on your board. It goes from 0 to 3.2K ohms.

Thanks for looking into it Scott and going through the EWD for me. At any rate the eBay seller offered a refund the cost of the stalk and I'll be shipping it back shortly.

I googled "rain-sensing wipers" and came accross this site and I might just try it. It is listed as compatible with the Yaris.

Rain Tracker

Yaris Hot Side Switching

Rain Tracker Wiring Diagram


Perhaps this could be a better option than getting the intermittent stalk?


-toy

[CTScott]

Originally Posted by toy_toronto

When I tried this (i.e. short blue and blk wires), it seemed to work at first and wiper did "park" but after trying it a couple of times I began to notice that the jump wires I was using got very hot then everything died. I had to replace two fuses, I blew fuses #3 (WIP, 25A) and #15 (AM1, 25A). I don't think I'm going to try that again, lol.



Thanks for looking into it Scott and going through the EWD for me. At any rate the eBay seller offered a refund the cost of the stalk and I'll be shipping it back shortly.

I googled "rain-sensing wipers" and came accross this site and I might just try it. It is listed as compatible with the Yaris.

Rain Tracker

Yaris Hot Side Switching

Rain Tracker Wiring Diagram


Perhaps this could be a better option than getting the intermittent stalk?


-toy

Before I found the EWD, I found a lot of people discussing how to disable the rain sensing function and switch the Lexus ones to normal intermittent.

[toy_toronto]

Originally Posted by toy_toronto

I googled "rain-sensing wipers" and came accross this site and I might just try it. It is listed as compatible with the Yaris.

Rain Tracker
Yaris Hot Side Switching
Rain Tracker Wiring Diagram

Perhaps this could be a better option than getting the intermittent stalk?

I went ahead and ordered the sensor due to lack of (cheap) Prius stalks on eBay.

Pretty impressed with the sensor control system so far --I'll post up a short youtube demo shortly.

Edit: YT clip here. http://www.yarisworld.com/forums/showthread.php?t=35960


-toy

[JoeSimons]

Thanks your share!I need these things!