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Wipers run at low speed on low and gh speed setting. 2013

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Wipers run at low speed...
Wipers run at low speed on low and High speed setting. 2013 Buick Enclave. had wiper motor replaced already. Dealer check body control module and other electrical circuits and could not find anything wrong
Submitted: 2 years ago.Category: Buick
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Answered in 9 hours by:
9/16/2015
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago
Chris (aka- Moose)
Chris (aka- Moose), Buick Technician
Category: Buick
Satisfied Customers: 49,949
Experience: 16 years of experience
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Since the motor has been replaced and the BCM checked out fine. That means they would of also verified the multifunction switch signal to the BCM is good. Why they stopped there with there diag makes no sense, so it makes me wonder if there diag steps were even accurate. If it was then the wiper speed control relay is the next part that could be to blame.

You want a excellent 5 star answer & I would like to be rated the same for providing it. Consider I don't know your skill level & I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies. Try your best to respond with good detail so I can do the same. I normally log in at 3pm and work late. A rating is required. Your rating me, what I type. I am not an employee of this website, nor have control over the fees or the time it took to get a response. If you rate negative or not at all you still paid, but I get nothing. I want you pleased with me and my efforts, so let me know if your experience here has come up short.

Thanks Chris

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Customer reply replied 2 years ago
My wife drives the car to the nursing home a lot to help care for her mother. I haven't been able to check anything on it. I did switch the the low and high speed relay in the fuse box under the hood which make no difference if that's what your are referring to.
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

That indicates the BCM check out, possibly was not confirmed there was no issue with the BCM. Do you have a diagnostic tool and understand wire diagrams and electrical testing?

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Customer reply replied 2 years ago
I do have a electric tester with a oms meter. I can test and read these but not an expert.
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

Great look over the wire diagram below.

https://dl.dropboxusercontent.com/u/90220402/13buickenclave.pdf

At the multifunction switch, see the wipers to high and OHM test across the tan/black and light green. You should get no resistance. Let me know those results.

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Customer reply replied 2 years ago
Do I have to take the trim off of the bottom of the steering wheel and leave everything connected. Also I read in other places to disarm the air bag. Is this necessary or any danger of it going off.
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

I have never had an air bag accidentally go off being I often have to do electrical testing in the steering column, though if your worried disconnect the battery prior to working and yes the steering column shrouds need to be removed.

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Customer reply replied 2 years ago
When I test these wires does the key need to be on or the wiring harness disconnected? The no resistance u spoke of would it be the same to use the audible like when you touch the test leads together.
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

The meters audible tone just responds with the presence of continuity it does not tell you if there is resistance, so it is not accurate for this test.

The key is off, the connector can be back probed or the connector removed and those pins tested on the switch.

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Customer reply replied 2 years ago
There was no resistance. It read 0.0 I had no idea it was going to be that hard to get to or connect.
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

Multi function switch is good with those results. Remove the wiper speed control relay. Pin 86 must be a ground when commanding the wipers on high with the key on, if its not then the BCM is bad.

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Customer reply replied 2 years ago
R u talking about the 2 relays on the right front fender well. If so which one and how do I test it. Could you call me(###) ###-####
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

Sorry I can not show you diagrams over the phone.

Use the link below, you remove the relay and OHM test this pin to ground to see if there is no resistance.

https://dl.dropboxusercontent.com/u/90220402/wiperhigh.png

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Customer reply replied 2 years ago
I have the high speed relay out. Which pin is #86
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

There should be a pin chart on the bottom or side of the relay.

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Customer reply replied 2 years ago
I was making sure I was making a good connection. The meter never changed. It stayed on 1.0 I had the key on & the wipers on high position
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

That reading indicates teh BCM is not sending a ground to the relay meaning the BCM is to blame.

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Customer reply replied 2 years ago
Could I jump it to a ground to see if it works on high. Which wire going to the motor is high. Could I run 12 volts to it with a toggle switch for high. Is the body control module easy to replace or expensive. I've already spent $470 on this car with no success. Am I through with the dash so I can resemble it. That's why I wanted to talk to you on the phone
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

According to the diagram the dark green wire to the wiper motor is powered to achieve high speed.

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Customer reply replied 2 years ago
Where is the bcm located. Can I replace it myself or do I need it reprogrammed at a dealer.
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

The BCM is under the left side of the dash and requires a dealer equivalent diagnostic tool to program it.

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Customer reply replied 2 years ago
If I run 12 volts to the dark green wire connection will the wipers run at high speed with a direct connection. Can you guarantee if I have the BCM replaced will it make the wipers operate normal on high speed. It's a lot of expense just to guess at.
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

Based on your tests results if done correct then I am 90% confident its the BCM. I can never gaurantee it, being I am not there. I am using your eyes and hands.

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Customer reply replied 2 years ago
If I wanted to test just the wiper motor with the wires disconnected and ground the black ground which terminal or wire color could I run 12volts to just to see if the motor is good at high speed.
Buick Mechanic: Chris (aka- Moose), Buick Technician replied 2 years ago

Its apparent the assistance I am providing is not of benefit, being this has gone on almost a month now. I feel its best to opt out and let someone else try to help you.

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Buick Mechanic: Gary, Buick Technician replied 2 years ago
Gary
Gary, Buick Technician
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Satisfied Customers: 17,505
Experience: 15 years master GM tech and mater ASE tech
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new expert here did you still need help ?

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