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      01-02-2021, 09:25 AM   #1
bimmerer5
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understanding the wiring diagrams

hi,

can anyone help with a step by step how to perform the below described tests?
sorry I am not native english...
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      01-02-2021, 04:07 PM   #2
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Originally Posted by bimmerer5 View Post
hi,

can anyone help with a step by step how to perform the below described tests?
sorry I am not native english...
It's asking you to measure the resistance across the module and put the value in the block in the left.
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      01-03-2021, 08:28 AM   #3
bimmerer5
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shall I understand that the probe + of digital meter goes to pin1 ( U_HR) and the negative probe goes to T_MRV wire?
and this will measure the resistance of control valve
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      01-03-2021, 08:17 PM   #4
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Originally Posted by bimmerer5 View Post
shall I understand that the probe + of digital meter goes to pin1 ( U_HR) and the negative probe goes to T_MRV wire?
and this will measure the resistance of control valve
Yes, although the polarity measuring the resistance shouldn't matter.
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      01-04-2021, 12:08 AM   #5
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thanks for assistance
I think I found were the problem comes from, the resistance of this valve is around
4 MOhm that is far more then the value specified by ISTA diagnostic , range between 2.9 - 3.9 Ohm
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      01-07-2021, 02:45 PM   #6
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Quote:
Originally Posted by bimmerer5 View Post
thanks for assistance
I think I found were the problem comes from, the resistance of this valve is around
4 MOhm that is far more then the value specified by ISTA diagnostic , range between 2.9 - 3.9 Ohm
Sounds like it might be it!
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