Hi friend's, please i need help to resolve a citroen xsara 2001, dash is vdo with 93C66 eeprom, and bsi valeo with nec mcu 780949 , the dash show 999999Km, customer replaced original dash due lighting fault to one of scrap yard,if you put original dash back it shows same 999999km. please can someone help me to resolve this? car is 2001. HDI
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16th January, 2020, 09:03 PM #1Member
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HELP!!! citroen xsara valeo bsi,vdo dash MILEAGE 999999KM
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16th January, 2020, 09:35 PM #2DK Veteran
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Hello to all. Did you change km in dash and bsi, or you put new dash and then have 999999? In most cases 93c66 in dash is bad data, you need to do 0 km in BSI and good working file for dash. If you connected on resistor mattix in BSI chek resistor, you can break them.
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16th January, 2020, 09:44 PM #3Member
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bsi.jpg
customer has putted new dash and when this heppened to both dashes, i have tried to do 0km in bsi but maybe my try was bad,and had no luck with dash km change.so asking for help (picture of my try bsi 0km)
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16th January, 2020, 10:09 PM #4DK Veteran
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Hello to all. You have to read and write 93c66 in x16 bit.
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16th January, 2020, 10:23 PM #5Member
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how to read x16 bit with vvdi prog? where is no such of option.after read you can view it in 8 16 32 bits
dash.jpg
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16th January, 2020, 10:24 PM #6DK Veteran
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Hello to all. try like this, check for problems in bsi close to nec processor, 4 resistor matrix where you connect your A0 to A7 wires.
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16th January, 2020, 10:29 PM #7Member
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okey i will give a try tommorow! will inform after
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17th January, 2020, 01:37 PM #8Member
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now it doesnt show odo at all it shows -------- and no speed ---
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17th January, 2020, 02:03 PM #9DK Veteran
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Hello to all. Did you check bsi for damage around mcu? Where do you connect to bsi?
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17th January, 2020, 02:21 PM #10Member
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no damage in bsi and no faults in bsi
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17th January, 2020, 02:30 PM #11DK Veteran
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Hello to all. ---------- this mean that you dont have connection from dash to bsi.
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17th January, 2020, 02:33 PM #12DK Veteran
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The other thing is eeprom in dash, orientation or dameged tracks. Or eeprom itself.
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17th January, 2020, 02:59 PM #13Member
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even dash lights up without ignition... it might be resistor matrix problem?
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17th January, 2020, 03:03 PM #14DK Veteran
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Hello to all. Yes this is what I am talking about, if dash is on when acc is off you have problems in bsi resistors matrix and pins of mcu.
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17th January, 2020, 03:20 PM #15Member
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so i think bsi is dead,because resistort matrix is good,pins not lifted
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