problem ECU or BSI PEUGEOT 406 HDI 90CH

[mecanodiag]

sorry it's my first post

[mecanodiag]

hello everybody I need your help I have a problem with a 406 HDI 90, the engine does not start the preheating indicator lights up, the diag indicates that there is no communication BSI between the ECU and the ECU does not answer
ECU is Siemens SID 801
VF38ERHYF81561148
dam 9521
if the problem come from BSI how I should do well to check before changing it because I, have another BSI who come from a different car
thank you waiting your reponce

[gepakg]

inside this bsi spi eprom 95040,simple copy them from original to used one and check that should work...

regards Gepa

hello everybody I need your help I have a problem with a 406 HDI 90, the engine does not start the preheating indicator lights up, the diag indicates that there is no communication BSI between the ECU and the ECU does not answer
ECU is Siemens SID 801
VF38ERHYF81561148
dam 9521
if the problem come from BSI how I should do well to check before changing it because I, have another BSI who come from a different car
thank you waiting your reponce

[ricards99]

i dont think problem in bsi, search why ecu dont answer, may be ecu power problem,

[highline]

Hello
The problem is very often the BSI ECU. But you can create a duplicate copy if you are a new or used BSI. Trade the eeprom or the MCU with interem E2.
Marco

[mecanodiag]

thank all, i want to know hom give the power for ecu ?? is the BSI ?? because in shema of autodata there is 4 or 5 cable give +12v to the ECU when switch on but when i teste i found 0v how give the 12v to this cable the BSI ??

[highline]

Hello
The start release comes from the BSI, as might trouddem concerns the tension but he did not stratet.
Marco

[BeianM]

thank all, i want to know hom give the power for ecu ?? is the BSI ?? because in shema of autodata there is 4 or 5 cable give +12v to the ECU when switch on but when i teste i found 0v how give the 12v to this cable the BSI ??

You need to consult the wiring diagram. Is there not a fuse & relay to do this from the ign.

[PAB]

Can you check with pp planet if the ecu is Blocket ??

[Albanais]

Check your earthpoints near the bsi, than check the contacts if there is some corrosion inside the pins and repair them. Eaven if your bsi is dead one you must have communication with

[Ashraf6119]

Hi

Check the wiring under Drivers Carpet near Accelerlator Pedal.

Also do you have Airbag Light staying ON

Ash

[EssexTech]

There is a relay called a double relay. Usually brown in colour 1920 7L is the number(not totally sure) and it will stop your vehicle starting

[racin-snake]

the bitron relay should be on the bulkhead or next to battery its brick red and has 11 pins
controls feed to pump and ecm

[mecanodiag]

Greetings and thank you all for your response I redo a new control with the diag PP2000, there is still no communication between the BSI and the ECM, the ECM does not answer, I checked all the fuses and the 2 cable that communicates between the BSI and ECM

The BSI is locked and the ECM again how to unlock the BSI?
I would test another BSI can you tell me how because I am a newbie

thanks

[Albanais]

Greetings and thank you all for your response I redo a new control with the diag PP2000, there is still no communication between the BSI and the ECM, the ECM does not answer, I checked all the fuses and the 2 cable that communicates between the BSI and ECM

The BSI is locked and the ECM again how to unlock the BSI?
I would test another BSI can you tell me how because I am a newbie

thanks

Be carefull because swaping (changer) the bsi will cause you poblems with your cluster(compteur de kilometres). If you can find a same car swap bsi together + cluster, or when puting back the connector dont connect the clusters one. Pm me if you need more details, im working for citron?ll?,mdr