STEPS 1:
- Pin Tx = Low (70 ms)
- Pin Tx = High (120 ms)
- Set Baudrate = 10400 bps
- Wake Up with send to ECU code = FE 04 72 8C
- ECU Response with code = 0E 04 72 7C
- Send Initialise code = 72 05 00 F0 99
- ECU Response = 02 04 00 FA
- Repeat point 1 if there is no response from the ECU. And continue the next Steps if there is a response from the ECU
STEPS 2:
- Send Request ECM ID = 72 05 71 00 18
- ECU Response (eg) = 02 0F 71 00 01 02 32 0F 01 00 00 00 00 00 39
- Send Request data table 11 = 72 05 71 11 07
- ECU Response data table 11 (eg) = 02 19 71 11 00 00 00 00 FF 0A AA 0A FF B2 FF FF 79 00 00 00 80 53 09 F1 5C
- If the ecu response data in table 11 is = 02 05 71 11 77
- then continue to request data table 17. Send to ECU = 72 05 71 17 01
- ECU will respond to data table 17 (eg) = 02 18 71 17 00 00 00 00 FF 0A FF FF FF FF 79 00 00 80 8D 00 00 00 00 D3
All processes are carried out for a maximum of 2 seconds otherwise the ECU will sleep again. For that, do step 1 and step 2 sequentially
DESCRIPTION:
- Request = 72 AA BB CC CS
- 72 = Request Header Code
- AA = Number of Bytes (including the Checksum)
- BB = Query Table
- CC = Table
- CS = Checksum
CHECKSUM
- Usually to make a data table can be started from 00 to FF. With code 72 05 71 ZZ CS
- Where ZZ = data table 00 to FF and CS = Checksum
- The formula checksum = 100 - (sumbyte and FF)
- For example the data request Table 13 = 72 05 71 13 CS Then the checksum value = 100 - ((72 + 05 + 71 + 13) AND FF) , result CS = 05
- So the data request table 13 = 72 05 71 13 05