Peugeot 308 - Error with BSI - F527 (Malfunction coded immobilizer)

Hi,

Before creating a topic, I looked around at the forum and did not find a solution or the topic stopped suddenly ...

The car went out suddenly without warning at the traffic lights, and it does not start, but only turns. A car from a Polish showroom, the other owner has not had any fumbling before.

After connecting the diagbox:

The main error and the cause is the one from BSI:

F527 Fault, coded immobilizer: transponder recognized but
engine management ECU blocked

The keys are recognized, the immo is deactivated when the key is inserted

In addition to this error, a lot of additional ones pop up from the section: injection / ignition, but I think it's the communication fault

and communication error in the ABS department:

U1308 Fault - No communication with the engine control ECU.


What I did:

I bought a fresh ECU and downloaded all "old ECU" to the one I bought and the result is identical, fuses checked, etc. but as it was, it is - the flap.

Rotten connector at ECU or abs, rotten can.

Thanks for the hint, I will check it soon, maybe it will be possible today and I will write the results.

Immo will not turn off the car when it is on.
You have no communication with the engine ECU and this is the reason, i.e. no power supply, a fault in the installation on the communication side or a damaged engine ECU.

Ok, I understand that I need to check the cables for the damaged ECU, I wrote that I bought a second one and copied the "old" ECU for fresh without a result. Besides, if you managed to connect the ecu to bdm100, then both drivers are ok.

I tend to check the installation, but I wonder how best to do it, physically or with instruments? Begin at the engine or dashboard side. I have not checked the installation "electrically" before and I do not have a device other than a multimeter I know that lexi has the option of a multimeter and an oscilloscope, but for this you also need additional accessories

I have only given you the possible reasons.
You have communication with BSI and communication with the engine calculator is with BSI via the ABS / ESP controller.
Enter the letter designation of the engine or VIN number, whether the car has ESP or only ABS, it will send you a diagram.
You have to disconnect the battery and check the transitions between the BSI and the engine ECU - this can be done with a gauge.
It is best to start with the measurement of BSI - ABS / ESP, and then ABS / ESP - engine calculator.
Since you do not write anything about the problem with ABS, it is rather a problem in the ABS / ESP part - engine calculator.

VF34C5FWC55235805

I cannot start the car and I would like to start by solving this blockade, the abs / esp communication error also appeared. All the tips I will get are use the car has been standing for over two months

So I would start by checking the plugs on the ABS / ESP controller, then checking the wires between BSI and ABS / ESP.
In the attachments there are diagrams and locations of elements and plugs from the diagrams.
Remember to disconnect the battery before disconnecting any controller in the car - do not disconnect / connect the plugs of the drivers under the power supply.
I understand that there is only a problem with communication with the engine ECU and with ABS / ESP.

Hi,

In a moment I start checking the installation, we'll see what comes out of it ...

Added after 2 [hours] 25 [minutes]:

Unfortunately the connections are fine I checked the connections in the picture that connect ecu, bsi, esp. I checked with a sound multimeter, disconnected the sockets and an example to the appropriate pubs in ecu, esp, bsi and there was always sound. I will examine the sockets and connectors, I will assemble everything and see because I noticed that the esp plug lock was broken, maybe it did not go all the way. I'll let you know

Unfortunately the connections are fine I checked the connections in the picture that connect ecu, bsi, esp. I checked with a sound multimeter, disconnected the sockets and an example to the appropriate pubs in ecu, esp, bsi and there was always sound. I will examine the sockets and connectors, I will assemble everything and see because I noticed that the esp plug lock was broken, maybe it did not go all the way. I'll let you know

Check the power to the ABS / ESP controller.
You can make a bridge on the ABS / ESP controller plug, i.e. give two jumpers on the CAN line so as to bypass the ABS / ESP controller. As you can see in the diagram, this driver communicates to the engine controller.

Hi,

Buddy, and how do you see that the power supply goes there on this diagram because I do not understand. Of course I can check with the meter where it gives 12v after ignition? And then connect it directly to the battery? I can only rummage on Saturdays so during the week I collect info on what might be wrong.

best regards

Hi,

I checked the compression, unfortunately it was missing in two cylinders, The head was removed and sent for planning. As it will be assembled, I would like to try to bypass the donesp power supply, as my colleague gra1 wrote, but I don't know which cables to make jumpers on.

best regards

After two months of testing, you have found that there is no compression, successful. In my opinion, leave this electronics alone, put this engine together, set the timing correctly, erase all errors, and then we will take care of the electronics, if necessary.

Tomorrow I will know at what stage the head is or inserted, etc.

Hello, Col. Well, just like Kol molasses wrote. After two months of testing, you have found that there is no compression, successful. In my opinion, leave this electronics alone, put this engine together, set the timing correctly, erase all errors, and then we will take care of the electronics, if necessary. what the bar looks like probably fafrocel. if the timing has skipped, a few gilding wheels are waiting for you.

Moderated By T5:

VF34C5FWC55235805 which is the designation of the 5FW engine and this means 1.6 VTi. Since when does the VTi engine have a belt? Unless the accessory belt, but it has nothing to timing.
3.1.11. Don't post messages that add nothing to the discussion. They are misleading, dangerous or do not solve the user's problem.
Warning.

You have successfully resolved this error:
9527 Coded immobilizer defect ......
because I have the same problem?

Hey,

The head was made and the compression returned, unfortunately it did not fire. I took the electronics to the magician and he fired - hard but fire. The magician said something was wrong with the timing and variable phase system. It was as complex as it should be and as always, but he didn't have the power and that's it. I don't have the car anymore.

I had a similar adventure with the 307 1.6hd and it could just go out while driving.
After connecting to the Lexia, he did not show anything interesting, he turned the key but did not start, he was able to light and drive and then again the grave.
After looking a bit like a needle in a haystack, it turned out that the shaft position sensor plug did not touch and when there were connections, it worked when there was no smoking. After cleaning and shortening as it should, the problems disappeared, and not one rummaged around and wondered what was Paul's sucking up.