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S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
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blind spot syst. service requiredViews : 5394 Replies : 18Users Viewing This Thread : |
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Feb 15th, 2015, 14:09 | #11 | |
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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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Feb 15th, 2015, 16:10 | #12 | |
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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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Feb 16th, 2015, 06:43 | #13 | |
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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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Feb 16th, 2015, 18:09 | #14 | |
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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 |
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Feb 16th, 2015, 20:03 | #15 | |
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Apr 16th, 2019, 18:06 | #16 |
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Blue module
Hi. Can I ask where was the module with the corroded pin?
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Apr 16th, 2019, 20:51 | #17 |
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It is the green mirror plug just behind the door panel under the mirror inside the car ..
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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. |
Apr 17th, 2019, 13:25 | #19 | |
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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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