Vehicle ODO meter mileage correction

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Warning! Modification of a digital odometer for fraudulent purposes is against the law! ,This is for education or repair purpose only.


This how to is aimed at individuals who have replaced there digital gauge clusters and would like to match their odometer to the actual mileage of their vehicle. I will be focusing on the Shogun and RAIDER 150 panel with the solid PCB in this example.

This modification is a little on the technical side. You should be proficient at soldering and have a general understanding of electronics, programming and hexadecimal math.



Required Tools:
  • Flat head screwdriver
  • Soldering Iron and solder
  • De-soldering tools: Copper braid or a solder-vacuum
  • Pliers
  • A pen
  • Personal computer with a serial port
  • Microwire serial programmer (schematic included)
  • Serial programming software 
First the HARDWARE


You can just solder parts by parts on the db9 female connector, making pcb is optional for we will only use this interface once, follow the schematic above and you should be fine. Just a note of caution. U3 is not interchangeable nor cannot be replaced by ordinary 78L05, use the part as designated on the schematic drawing.




As seen on the photo, (sorry for this blurred image). After checking each and every component is soldered properly to each other, you can apply GLUE stick to secure the component not to touch each other.

Second the SOFTWARE

many eeprom programming software are available fordownload all over the internet, i do tried some and i find it easier for this job using PONYPROG 2000 which is available for free download at their site. configuring the device is easy. PONY PROG download


SCREENSHOT of the software













here the actual data seen was from a speedometer panel board, i can tell the hardware is working by giving me a bit of data.


Connecting the interface on the target board














again by following the schematic, just solder your wire on each pin accordingly, from pin 1 to pin 8 correctly. (no need to dismantle the IC on board the PCB). solder the wire first before connecting the interface on your PC communication port.

Configuring your INTERFACE with PONY PROG first before hitting the READ button.

From the Set Up menu, choose Interface Setup.

You should have the I/O port set as:
  1. Serial
  2. SI Prog I/O
  3. Which ever port you connected you programmer to.
  4. Leave all the check boxes unchecked.
Click OK!

From the chipset dropdown, choose MicroWire 16 eeprom and the 9346 chip. (L46r)


HIT read!!!


the actual odometer reading of this panel was 3009.0 km..

With the data came up, after encoding the hex actually stand the same odometer reading posted.  make sense.
Looking at the memory dump from your odometer chip, the lines we are interested in are 000040 to 000060.
TRY this link....for the conversion..(have no permission to repost it here)

HEX CONVERSION

ahhh, you want an easier conversion..i guess you have to download such software that can convert it like perhaps....this

TACHOSOFT

their latest software includes cars, bikes, ATV's odometer and corresponding eeprom part number.

Comments

  1. Achala ArunaluAugust 7, 2015 at 4:33 AM

    Would love to try this

    ReplyDelete
  2. UnknownNovember 29, 2019 at 1:26 PM

    Hi, you say that U3 cannot be replaced by 78L05. Why not? All we need is 5V correct?

    ReplyDelete
    Replies
    1. UnknownDecember 5, 2019 at 1:42 AM

      I think Sagev is rigth, look at quiescent current of both (LM2936Z-5 AND 78L05).

      Delete

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