STEPS 1:

1. Pin Tx = Low (70 ms)
2. Pin Tx = High (120 ms)
3. Set Baudrate = 10400 bps
4. Wake Up with send to ECU code = FE 04 72 8C
5. ECU Response with code = 0E 04 72 7C
6. Send Initialise code = 72 05 00 F0 99
7. ECU Response = 02 04 00 FA
8. 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:

1. Send Request ECM ID = 72 05 71 00 18
2. ECU Response (eg) = 02 0F 71 00 01 02 32 0F 01 00 00 00 00 00 39
3. Send Request data table 11 = 72 05 71 11 07
4. 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
5. If the ecu response data in table 11 is = 02 05 71 11 77
6. then continue to request data table 17. Send to ECU = 72 05 71 17 01
7. 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