- Support for ecu serial #10267
- A customer's V3.6 ecu suddendly lost serial number, seems to be in a kind of limp mode (10° and 0.65 lambda at any load/rpm).
- VemsTune is now displaying that Serial is unknown-0.
Granting (by info sent in priv),
Do you have ISP cable (Parport DSUB25 or USB-ISP ?) Will need to follow
http://vems.hu/vt/help/v3/general/bootloader_upgrade.html
If considering bootloader upgrade, (so that internal BOD can be disabled) highly recommended:
PLEASE CHECK THAT v3/10267 has reset chip at the atmega128/pin20 reset, eg
- mcp121 or mcp131 (U26 position)
- or mcp809 or max809 (U10 position)'''
See GenBoard/VerThree/Schematic eg
- Support required for VEMS EGT amplifier
Engine off, ambient sensor temp, I'm getting 2.5 volts out of Pin6 (0-5V output, 1V/233.3C).
Thus getting 580°C instead of 20°C.
Tested Pin7 DVM output (1V/100°C) and getting 0.7 volts (and not 6 volts, roughly corresponding to Pin6 2.5 volts).
EGT sensor is K type yellow-red wires:
- yellow = green (plus wire) to board GND
- red = white (minus wire) to the board cathode on corner