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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > help!pwm cant work.



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      02-18-2013, 03:16 AM   #1
diddlkiss
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help!pwm cant work.

hey guys
my pwm kit has some error,I carefully check each connector.
when I check the flow Nozzle,its cant open!
I know its Hall-effect sensors,but its dont work.
any advise
thanks!
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      02-18-2013, 04:51 PM   #2
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      02-18-2013, 04:55 PM   #3
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Quote:
Originally Posted by diddlkiss View Post
hey guys
my pwm kit has some error,I carefully check each connector.
when I check the flow Nozzle,its cant open!
I know its Hall-effect sensors,but its dont work.
any advise
thanks!

I'm not sure I follow. The pic you posted is of the FAV (fast acting valve). The hall effects sensor is something completely different and is a part of the flow sensor.

When you apply 12v and Ground to the two parallel blade terminals on the FAV connector, do you hear a click?

Shiv
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      02-18-2013, 06:12 PM   #4
diddlkiss
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Quote:
Originally Posted by shiv@vishnu View Post
I'm not sure I follow. The pic you posted is of the FAV (fast acting valve). The hall effects sensor is something completely different and is a part of the flow sensor.

When you apply 12v and Ground to the two parallel blade terminals on the FAV connector, do you hear a click?

Shiv
hey shiv
I m very glad to see your reply
because means vishnu new works published
Yes
I hear the sound from the relay
But it can not be opened.
In front of it, everything is normal.
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      02-20-2013, 01:44 AM   #5
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Quote:
Originally Posted by shiv@vishnu View Post
I'm not sure I follow. The pic you posted is of the FAV (fast acting valve). The hall effects sensor is something completely different and is a part of the flow sensor.

When you apply 12v and Ground to the two parallel blade terminals on the FAV connector, do you hear a click?

Shiv
The solenoid valve is still not working.
I carefully checked each wire.
I remove the solenoid valve to try to use a 12v circuit connection
He is normal, and can be turned on or off.
I also measured the electromagnetic valve - relay-procede
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      02-20-2013, 01:36 PM   #6
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Bypass the resistor. Attempt a direct 12v connection. Remember these are Positive +opening valves. I thought mine was bad as well. Until I applied a direct 12v current and it actuated correctly.

It took me some time to figure if it worked. Took me back to the ecu and then I determined how this was engineered. Think about what line was tapped off the harness.

I hafta say tho Shiv, the bench test your guys provided wasn't correct.
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      02-20-2013, 01:39 PM   #7
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Also if I'm not mistaken that entire valve can be disassembled, iirc. I took one of them completely apart.
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      02-21-2013, 03:58 AM   #8
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Quote:
Originally Posted by 335xi Kevo View Post
Also if I'm not mistaken that entire valve can be disassembled, iirc. I took one of them completely apart.
I use the time it has been more than six months, until last week, I found that I started to check every connection no turning lights on my instrument., They do not have any problems.
I've tried to solenoid valve separation, to give him a 12v power supply and grounding line, I noticed that in fact the grounding line should be connected to procede.
As long as I connect it to procede, it can not open properly, has a magnetic.
If you give it a separate grounding line, it can work.
I do not know what I can do.
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      02-21-2013, 04:03 AM   #9
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Quote:
Originally Posted by 335xi Kevo View Post
Also if I'm not mistaken that entire valve can be disassembled, iirc. I took one of them completely apart.
its like the pic
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      02-21-2013, 04:11 AM   #10
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Quote:
Originally Posted by 335xi Kevo View Post
Also if I'm not mistaken that entire valve can be disassembled, iirc. I took one of them completely apart.
The question now is 12v is normal
But to procede the grounding line does not work.
I found a piece of magnet, put it on top, the valve is open state, I want to use control tank line to control valve.
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