Rear Wiper Intermittent Delay Timer Mod

[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