Minor annoyance solved today, posting in hopes it saves the next person some $ and aggravation. Apologies if it's in the wrong forum/area.

My 2005 S-type VDP wipers will come on normally (in manual, I don't use the auto feature), but after coming on won't turn off. They will speed up if I push the stalk up , but continue to run after moving the stalk to the off position. They will also continue to run even after the car is turned off.

Problem turned out to be a bad relay , in the fuse box under the hood. I swapped it with the fog light relay and that seemed to fix it for a few weeks until that relay went also.

Old relay was a yellow cube, Jaguar part number XR83 14B192 AA XR83-14B192-AA

New part number, purchased from Jaguar dealer is a Ford FoMoCo part in a Jaguar bag. It reads:

5M5T-14B192-BA
140672A
12V
V23074-A1001-X77

I'll post an update if the problem returns and turns out to be the switch or motor that so many others have had trouble with.

Thanks.
-H

 

So the problem has recurred. I pulled the wiper switch to test it and try to confirm/eliminate it as the weak link. However I can't find the proper wiring diagrams to identify which connections should be open and closed when the wiper is off, low, med or high speed.

Question - Has anyone tested their wiper switch and have any suggestions for what resistance or continuity I should be seeing when checking across the 5 pins on the switch?

 

Hi hijk, wondering if you ever resolved this issue as I am now dealing with a similar problem. Thanks, SS

 

His last activity on the forum was almost four years ago. Doubt you'll get a reply from him.

What year is your car? We can walk you through some troubleshooting but we need the year to get the correct wiring diagram. Have you tried swapping the wiper park relay yet with a known-good one from another system?

 

Thanks Karl, it's a 2005 S Type R and the wipers run randomly when running and parked. I changed the stalk some time ago and it seemed to stop it for a while, but this problem is back and is more prevalent. Oddly, it is the simplest troubleshooting step to swap the relay, but that seems to have worked for no one across this and other forums. I am betting it is the wiper motor and so I ordered one and it is inbound. I will post my results after I replace. Thanks for weighing in. SS

 

Huh? Are you saying you aren't planning to swap the relay for troubleshooting? Can't get much simpler than that. The only caveat, and this is more for your neighbors, is don't wear short shorts while leaning under the hood to swap the relay. If you insist on wearing short shorts (we don't judge), at least work in the garage with the door closed.

Here are a few more troubleshooting steps you can take before swapping out the motor. I do agree, there's a good chance the motor assembly is the culprit, specifically the little internal switch that provides the position feedback. See figure 13.1 here:

http://www.jagrepair.com/images/Auto...cal-2005on.pdf


1) To test the relay, swap R16 (Wiper Park) with a known-good relay of the same size. R11 (Fog Lamps) would be a good donor. Just make sure the fog lamps work properly before swapping.

2) To test the OFF command from the wiper switch and through the Front Electronic Module (FEM), place your finger on the freshly swapped known-good R16. Have a helper cycle the wiper switch on and off. You should feel R16 click. If so, that means the wiper switch, FEM, and associated wiring are good.

3) To test the Park/Run switch inside the wiper motor assembly, remove relay R16. Connect a multimeter's red lead to socket #4, black lead to ground. Set up the meter to read voltage. Connect a jumper between sockets #3 and #5. The wipers should start running. (The ignition does not need to be on.) As the wipers move up and partway back down, the meter should display battery voltage. As the wipers approach the park position, you should see 0 volts.

4) One last test of the Park/Run switch. As the wipers are approaching the park position, remove the jumper. Basically, you want to stop the wiper travel with the Park/Run switch in the Park position. Make sure the voltmeter is showing 0 volts to confirm the switch has changed from Run to Park. With the meter still connected as above (red lead at socket #4, black lead to ground), change the meter to read continuity. You should see nearly perfect continuity to ground now. Touch the test leads together to confirm the meter is reading accurately. If you have more than an ohm or two, the Park/Run switch has failed.

Ten minutes with a meter could save you a lot of grief, and prevent changing perfectly good parts.

 

Karl, Appreciate the detailed troubleshooting procedure and while replacing the wiper motor, I did run though your troubleshooting directions. It all checked out and problem has been resolved for the last few weeks. I agree it was a little *** backwards, but my guess worked out for the best this time. I cannot express enough the value of you and others taking time to provide guidance on troubleshooting. Again, thanks so much Karl.

 

So the windshield wipers quit altogether this week and I did apply the troubleshooting procedures listed above successfully. Step 4 confirmed that the Park/Run switch of the new motor in fact failed. I replaced my 4 week old Cardone motor from RockAuto under warranty is it is now operating once again.

I had a similar experience with a new replacement Bosch heater control valve that did not work. It is complete pain when this happens as one never expects a new replacement part to fail or not work. I will say that RockAuto makes it easier to replace with expedited shipping and everything done online.