Have yet to see this work on my truck. The manual and the sticker says I have it. Of course I'm in a state where rain is rare so I don't have much opportunity to test this. What mode is this suppose to work in?

 

ya, i have the same question. My explorer supposedly had this option too. I'm wondering that is what they call being able to adjust the timing of the wipers.

 

I have yet to see any service manual with diagnostic routines or operation descriptions about speed sensitive wipers. The only thing you will find is about variable intermittent operation.
It would appear they have been calling it speed sensitive for a long time and it may simply be a trademark name for variable speed intermittent.

 

I have a vehicle with speed sensitive wipers. Basically (if I understand the question) if I have my wipers on normal operation (not intermittent) while driving down the road over 5 MPH and I come to a stop, such as at a traffic light, the wipers go from normal operation to intermitent. If my wipers are on high speed then the option is cancelled out. This is what I believe to be speed sensitive. They work hand-in-hand with the speed of your vehicle.

 

I found better information in the previous year service manual than from the 07 manual...

The INTERVAL wiper speed is activated with grounds controlled by the multi-function switch inputs to the windshield wiper motor module. The windshield wiper motor module then activates the windshield wiper run/park relay coil and switches voltage through the windshield wiper high/low relay. The high/low relay remains deactivated supplying the voltage to the wiper motor low speed input and activates the windshield wiper motor. When the windshield wiper motor module receives the grounded input, the motor continues to operate until the Hall-effect sensor senses magnetism, which turns off the run/park sense output to the windshield wiper run/park software, deactivating the relay and disconnecting voltage to the wiper motor. The windshield wipers remain parked until the windshield wiper motor module completes a time-out and then repeats the intermittent windshield wiper cycle.

The windshield wiper motor module responds to the windshield wiper control commands by interpreting inputs from the PCM system. The speed dependent wipers will compensate for the extra moisture that accumulates on the windshield at higher speeds, except when the multi-function switch is in the INT 1 position. At higher speeds, the speed dependent feature shortens the delay between wipes when using the variable interval wipers. Delays will automatically adjust at speeds between 16 and 105 km/h (10 and 65 mph).

The windshield washer is activated by the internal wiper motor modules when they receive a ground from the multi-function switch between the washer inputs. Depending on the correct ground, the internal wiper motor module activates the windshield washer relays (internal) by grounding the relay coil. When the relay is activated, it connects voltage to the washer pump, which is grounded through the harness.

The windshield wiper motor defaults to its SOFTWARE SAFE mode when the run/park sensor does not sense the Hall-effect sensor magnet inside the wiper motor. This can be caused by obstruction of windshield wipers or binding linkage. The windshield wiper motor will continue to operate in a HI/LO speed condition for a period of 60 seconds.

 

Does anyone know where the Hall-effect sensor magnet is because now i wont sleep till i find it! lol

 

My guess is that it uses the vehicle speed sensor (VSS) at each wheel that reports back to the PCM. Those sensors are Hall-Effect sensors. I can't image that the wiper motors created a strong enough field to measure an appreciable waveform.

 

And here I thought they spoke english in OK.