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Old Feb 15th, 2015, 14:09   #11
Clan
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Originally Posted by forumoto View Post
-----------------------------------------------------------------------------
you need to check continuity by unplugging the bliss camera and rear door module

[should i check continuity only on the LIN line, if yes, the front right door camera LIN line is connected to the PDM, so how do i check that, looking on the wiring diagram that i have i cannot see the complete wiring diagram routing between the front camera and the rear right door] If you have this schematic please share with me and pinpoint which wires i must emphasize on critically when checking continuity....

.. check for shorts to Live and shorts to earth ..
In which lines or only the LIN


also when connected check the digital signals on the wire ..
[ which of the tool can be use to check for this digital signals, Is Voltmeter okay for this work or i must use the scan tool]

a LED with a 400 ohm resistor in series is ideal for testing this you can see it flashing fast when there is data on the wire .

[ This LED you re talking about, can you show me some example online that is build in serials with resistors. I can make my own home type, Now after this LED being ready where should it be connected at, is it at the front passenger door camera harness after unplugging it or is there any different place, would i be carrying any test related to the camera at the driver side as well]



https://www.mediafire.com/?nebgeq8pm8x5rwf

Hope the above diagram is what i need to build in other to make the check with the LED and resistor
Quote of your message:
the green/white wire goes from the passenger door module to the rear door module and on its way goes to the Passenger BLIS Camera too . It is all the same wire

[the green/white wire goes from the passenger door module to the rear door module and on its way goes to the Passenger BLIS Camera too . It is all the same wire

The LIN line goes separately to this 2 modules, i mean the right passenger front door camera and the rear right door, but all meet at the PDM

that is

Rear Right module LIN moves from pin 20 to the PDM pin 20 in the C1 connector
And the front passenger right side camera LIN also moves from pin 4 to the PDM pin 4 in the C2 connector of same Controller(PDM)

Now you were line the green/white wire goes from the passenger door to the rear door module and TO ITS WAY GOES TO THE PASSENGER BLIS CAMERA{ this statement sound as if there is a joint of wire connecting the same wire that goes to the right rear door module to the front camera... }
It really is a lot more simple than it appears . You only need to concentrate om this Green/white LIN wire .
The green/white stripe wire is the LIN data communication wire , it sends and receives control messages from the door module to the Camera and rear door ..
The fault codes indicate a problem with the signal on this wire .

The LIN wire comes from Pin 20 on the door module , the LIN wire from BLISS camera and Rear door module both come in to connect at the PDM at pin 20 ..

you need to determine first if there is a digital signal on this data wire .. it is a 12v signal rapidly switching on/off .. an oscilloscope is the best way of looking at it . but if you get a small LED with a series resistor of about 400 ohms , connect its negative to earth and use the positive to probe the LIN wire you should make out a rapid flickering if the signal is there ..
the fault code indicates the signal is faulty ..

If your basic continuity checks on teh LIN wire is ok , you have to assume the PDM is not sending it out or sending out an incorrect signal .

Another problem may be the BLIS or Rear door module is corrupting the signal , so disconnect the LIN from first the rear door module and see if BLIS works , Then disconnect it from the Mirror camera and see if the rear door works ..

My feeling is the PDM is faulty ..
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Old Feb 15th, 2015, 16:10   #12
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Originally Posted by Clan View Post
It really is a lot more simple than it appears . You only need to concentrate om this Green/white LIN wire .
The green/white stripe wire is the LIN data communication wire , it sends and receives control messages from the door module to the Camera and rear door ..
The fault codes indicate a problem with the signal on this wire .

The LIN wire comes from Pin 20 on the door module , the LIN wire from BLISS camera and Rear door module both come in to connect at the PDM at pin 20 ..

you need to determine first if there is a digital signal on this data wire .. it is a 12v signal rapidly switching on/off .. an oscilloscope is the best way of looking at it . but if you get a small LED with a series resistor of about 400 ohms , connect its negative to earth and use the positive to probe the LIN wire you should make out a rapid flickering if the signal is there ..
the fault code indicates the signal is faulty ..

If your basic continuity checks on teh LIN wire is ok , you have to assume the PDM is not sending it out or sending out an incorrect signal .

Another problem may be the BLIS or Rear door module is corrupting the signal , so disconnect the LIN from first the rear door module and see if BLIS works , Then disconnect it from the Mirror camera and see if the rear door works ..

My feeling is the PDM is faulty ..
----------------------------------------------------------------

Quote from your previous message:
The LIN wire comes from Pin 20 on the door module , the LIN wire from BLISS camera and Rear door module both come in to connect at the PDM at pin 20 ..


[Looking on Mitchell data,

the rear right door LIN line and the Front right door camera LIN do not meet at same point point in the PDM, but from your message as if they meet at the same point, please re-cross check to me sure.. because i am seeing two different harness that is C1 and C2, and they all have different pinning point at which this LIN line from this two controllers meet in at the PDM
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Old Feb 16th, 2015, 06:43   #13
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Originally Posted by Clan View Post
It really is a lot more simple than it appears . You only need to concentrate om this Green/white LIN wire .
The green/white stripe wire is the LIN data communication wire , it sends and receives control messages from the door module to the Camera and rear door ..
The fault codes indicate a problem with the signal on this wire .

The LIN wire comes from Pin 20 on the door module , the LIN wire from BLISS camera and Rear door module both come in to connect at the PDM at pin 20 ..

you need to determine first if there is a digital signal on this data wire .. it is a 12v signal rapidly switching on/off .. an oscilloscope is the best way of looking at it . but if you get a small LED with a series resistor of about 400 ohms , connect its negative to earth and use the positive to probe the LIN wire you should make out a rapid flickering if the signal is there ..
the fault code indicates the signal is faulty ..

If your basic continuity checks on teh LIN wire is ok , you have to assume the PDM is not sending it out or sending out an incorrect signal .

Another problem may be the BLIS or Rear door module is corrupting the signal , so disconnect the LIN from first the rear door module and see if BLIS works , Then disconnect it from the Mirror camera and see if the rear door works ..

My feeling is the PDM is faulty ..
----------------------------------------------------------

So what will you say if after testing all this and yet still the camera does not WARM UP, what does it means...
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Old Feb 16th, 2015, 18:09   #14
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Quote:
Originally Posted by Clan View Post
It really is a lot more simple than it appears . You only need to concentrate om this Green/white LIN wire .
The green/white stripe wire is the LIN data communication wire , it sends and receives control messages from the door module to the Camera and rear door ..
The fault codes indicate a problem with the signal on this wire .

The LIN wire comes from Pin 20 on the door module , the LIN wire from BLISS camera and Rear door module both come in to connect at the PDM at pin 20 ..

you need to determine first if there is a digital signal on this data wire .. it is a 12v signal rapidly switching on/off .. an oscilloscope is the best way of looking at it . but if you get a small LED with a series resistor of about 400 ohms , connect its negative to earth and use the positive to probe the LIN wire you should make out a rapid flickering if the signal is there ..
the fault code indicates the signal is faulty ..

If your basic continuity checks on teh LIN wire is ok , you have to assume the PDM is not sending it out or sending out an incorrect signal .

Another problem may be the BLIS or Rear door module is corrupting the signal , so disconnect the LIN from first the rear door module and see if BLIS works , Then disconnect it from the Mirror camera and see if the rear door works ..

My feeling is the PDM is faulty ..
------------------------------------------------------------

Congratulation, I have access to the car today and carried out all we discussed, firstly on the green white wire and lo and behold to my surprise, there was no communicatioin in the c2-pin4 from the pdm to the rcm, so when I try to probe that wire, I got to a point to see that one junction connector has water intrusion and rusted the LIN pin that link to the other side, after opening the check, I repair the open circuit, and that got the error away from the panel and now the bliss light flashes and all is well now,

Thank you very much in million times, May the good LORD bless you always
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Old Feb 16th, 2015, 20:03   #15
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------------------------------------------------------------

Congratulation, I have access to the car today and carried out all we discussed, firstly on the green white wire and lo and behold to my surprise, there was no communicatioin in the c2-pin4 from the pdm to the rcm, so when I try to probe that wire, I got to a point to see that one junction connector has water intrusion and rusted the LIN pin that link to the other side, after opening the check, I repair the open circuit, and that got the error away from the panel and now the bliss light flashes and all is well now,

Thank you very much in million times, May the good LORD bless you always
a good result :-)
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Old Apr 16th, 2019, 18:06   #16
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Hi. Can I ask where was the module with the corroded pin?
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Old Apr 16th, 2019, 20:51   #17
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Hi. Can I ask where was the module with the corroded pin?
It is the green mirror plug just behind the door panel under the mirror inside the car ..
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Old Apr 17th, 2019, 11:43   #18
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Cheers Clan. I've checked continuity from the mirror to the green plug. Then both sides of the green plug,all good. After speaking to volvo this morning seemingly it's common for the module in the door to fail. 31343469 part number. £270 from volvo or £100 2nd hand. Worried it might need coded to the car though.. might just stick a piece of black tape over the blis light in the meantime.

Last edited by Argyllt6; Apr 17th, 2019 at 11:49.
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Old Apr 17th, 2019, 13:25   #19
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Originally Posted by Argyllt6 View Post
Cheers Clan. I've checked continuity from the mirror to the green plug. Then both sides of the green plug,all good. After speaking to volvo this morning seemingly it's common for the module in the door to fail. 31343469 part number. £270 from volvo or £100 2nd hand. Worried it might need coded to the car though.. might just stick a piece of black tape over the blis light in the meantime.
It is pretty obvious if water has got in the green connector , blue/green crystallised material like dry salt on the pins and socket .
Its not common for the module to fail they are guessing , they need to diagnose it and prove what the problem is .
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