Volvo V60 P3 (2016) – Airbag Control Module, Wiring Harness and Programming
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@Usturmaca you should adress SRS-U300716 first. All other errors are most probably follow up errors because of low voltage.
Check fuse 18 behind the glove box.
Also check the continuity between that fuse and pin 43 (red/green cable) at the SRS module connector.
Also take a really close look at the connectors and pins at the SRS module for bent pins and loose connections.
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@T5-T6-Schnappi I have one more question: Is the connector shown in this picture the large one or the small one? Also, could you please tell me the part numbers of the two connectors that plug into the SRS airbag control module?
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@Usturmaca the picture is the smaller connector (C2).
Identifying the part numbers is super confusing as the connectors are made of several separate parts. If you're willing to try identifying the numbers, you can take a look here The big connector is called "4/9 C1" and has a 50 and 25 pole connector in it's housing. The small connector is called "4/9 C2" and consists of two 26 pole connectors in one housing. The terminals are "Type C" , but I can't tell you which ones exactly.Always disconnect the battery and wait for at least 15 minutes before you are working on the SRS system, and never use a multimeter/Ohmmeter on any detonator circuit when the detonator is still connected!
As additional information. The SRS module has two 12V inputs. One from fuse 18 (SRS/OWS) behind the glove box (pin 43 on the SRS) "Circuit B", and one from fuse 20 (ECM/TCM/SRS) in the engine compartment (pin 42 on the SRS) "Circuit A".
Do you have any U-codes in other modules or just SRS-codes?
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I would like to briefly explain the situation.
I live in Germany, and this is my personal vehicle, which I use myself.
One day, the car displayed a “Battery Low” warning, followed by several other warning messages related to the ESC, airbag system, and seat belts. I immediately went to have the battery replaced.
After installing the new battery, the workshop told me that they were unable to clear the fault codes and that I needed to take the car to a Volvo dealership. So I took my vehicle to Volvo.
My car stayed at the Volvo dealership for approximately 10 days. After that, they called me and said they had still not been able to identify the problem and would need more time to continue diagnosing it. They also informed me that the costs had already reached €400 and asked whether I wanted them to continue. I decided not to proceed.
Afterwards, I removed the SRS control module myself. I found someone in Berlin who repairs these units and sent it to him.
Before the repair, none of the diagnostic software could communicate with the SRS module. In VIDAsh, the module was showing in red.
The module was repaired and sent back to me. I reinstalled it and connected the diagnostic software. However, when I tried to clear the fault codes using VDASH, they would not disappear.
I then performed an SRS Crash Mode reset and selected the option to clear the DTCs. Most of the fault codes disappeared, but one remained. It was related to the resistance in the right front passenger seat belt.
I then removed the pins from the SRS module connector again to check the connections and measure the resistance. However, during this process, I may have accidentally damaged or disturbed some of the pin connections.
After reconnecting everything, even more fault codes appeared, and I started getting the errors I am currently experiencing.
Unfortunately, I have not been able to find anyone in Germany who is willing to properly investigate and work on this issue. Nobody seems interested in dealing with it.
I would really appreciate it if someone could help me diagnose and resolve this problem. Thank you very much for your time and support.
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@T5-T6-Schnappi I measured the pins, and they are receiving 12V. The pins are in good condition. Currently, there are 5 fault codes showing. The fuses are all fine, but I replaced them anyway.
SRS-B00101B Passenger Frontal Stage 1 Deployment Control . General Electrical Failures. Circuit resistance above threshold.
SRS-B00791B Driver Seatbelt Pretensioner "B" Deployment Control. General Electrical Failures. Circuit resistance above
threshold.
SRS-B00821B Passenger Seatbelt Load Limiter Deployment Control . General Electrical Failures. Circuit resistance above
threshold.
SRS-B11A081 Left side restraints pressure sensor. Bus Signal / Message Failures. Invalid serial data received.
SRS-U300716 Control Module Input Power ""B"". General Electrical Failures. Circuit voltage below threshold. -
@Usturmaca Wenn auf beiden 12V Leitungen was ankommt und du trotzdem den U-Fehler hast, ist wahrscheinlich dein Steuergerät intern kaputt. Das gleiche gilt für die anderen Fehler. Wenn die Leitungen in Ordnung sind, sind das interne Fehler. Leider finde ich deine Teilenummer in keinem meiner Kataloge um zu sagen ob die Nummer ersetzt wurde bzw. ob noch andere Nummern kompatibel mit deinem Wagen wären. Im Prinzip brauchst du ein passendes, gebrauchtes SRS Modul und musst die Software von deinem jetzigen Modul dann mittels Vdash klonen.
Oder du fragst die Firma die das Teil schon mal repariert hat, ob sie nochmal reinschauen. -
Volvo part number: P31451752
Bosch number: 0 285 013 274When I purchase a unit with these part numbers, I will back up the software from my old unit and then transfer it to the replacement unit once it arrives.
I would really appreciate it if you could explain which menus I need to use and in what order I should perform these steps.
Thank you very much for your help!
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@Usturmaca Your SRS needs to be cloned "on the bench" then. Sorry. You will need to find someone who has the required tools and knowledge for this.
After this has been done, you need to do the SRS configure procedure. See here -
@T5-T6-Schnappi Thank u for help
