EDC15P+
Content
Images
The ECU images below are intended to get an idea and to show of which ECU it is. Furthermore, they could help if the question of the arrangement of the components is in the room after too fast disassembly or desoldering. The most frequently asked question in this context is:
"Where is Pin 1?". The photos shown can not cover all of the ECU revisions, so they should be seen as examples.
Top
Bottom
Connector
Circuit board top
Circuit board bottom
Processor position
EEPROM position
Pin assignment
| Slot | Pin | Description | Comment |
|---|---|---|---|
| T81 | 1 | Ignition | KL15 (Switched power) |
| T81 | 2 | Ignition | KL15 (Switched power) |
| T81 | 4 | Ground/GND | KL31 (Vehicle ground) |
| T81 | 5 | Ground/GND | KL31 (Vehicle ground) |
| T81 | 6 | CAN-Low | High-Speed-CAN (500 kbit/s) (Not for diagnostic) |
| T81 | 7 | CAN-High | High-Speed-CAN (500 kbit/s) (Not for diagnostic) |
| T81 | 16 | K-Line | |
| T81 | 37 | Power | KL30 (Permanent power) |
Memory
Hardware:
| Hardware | Name |
|---|---|
| µController | B59388 |
| EEPROM | ST24C04 |
Layout:
| Type | method R/W | Memory starting from | Memory size (Byte) | Comment |
|---|---|---|---|---|
| Flash | ext.Prog | 0x0 | 0x80000 | 512KB |
| EEPROM | ext.Prog | 0x0 | 0x200 | 512Byte |
EEPROM dump setup
In order to catch data losses, the data is stored redundantly.
OMI function:
//Only supported when ECU use WFS3.
unsigned int getOmi_1(void)
{
return dump[0x1B0];
}
unsigned char getOmi_2(void)
{
return dump[0x1DE];
}
...
//omi On -> omiByte = 0x73;
//omi Off -> omiByte = 0x60;
void setOmi_1(unsigned char omiByte)
{
dump[0x1B0] = omiByte;
}
void setOmi_2(unsigned char omiByte)
{
dump[0x1DE] = omiByte;
}
WFS-Code:
//Only supported when ECU use WFS3.
unsigned short getWFSLogin_1(void)
{
return dump[0x12F] * 0x100 + dump[0x12E];
}
unsigned short getWFSLogin_2(void)
{
return dump[0x161] * 0x100 + dump[0x160];
}
Mileage of engine control unit:
//Some ECUs do not use this, then the bytes always have the value 0x00.
unsigned long getKM_1(void)
{
return ( ((dump[0x1C2] & 0x0F ) * 0x1000000) + dump[0x1C1] * 0x10000 + dump[0x1C0] * 0x100 + dump[0x1BF] ) * 10; //unit meter
}
unsigned long getKM_2(void)
{
return ( ((dump[0x1F0] & 0x0F ) * 0x1000000) + dump[0x1EF] * 0x10000 + dump[0x1EE] * 0x100 + dump[0x1ED] ) * 10; //unit meter
}
Example dump download