T373A & T373B User Manual
2.4 Interface Definition
The T373 has an OBD II connector. It contains power supply and interfaces of
CAN bus, K-line, L-line, J1850 bus, multi-functions input and immobilizer. The
sequence and definition of the OBD II connector are shown in following figure:
Description of OBD II Connections:
PIN Description
PIN Description
1
Not connect
9
Not connect
2
Bus positive line of SAE J1850
10
Bus negative line of SAE J1850
3
Not connect
11
Not connect
4
Ground
12
Engine cut line(Optional)
5
Ground
13
Multi-functions input(Optional)
6
CAN_H line of ISO 15765-4
14
CAN_L line of ISO 15765-4
7
K line of ISO 9141-2 and ISO
14230-4
15
L line of ISO 9141-2 and ISO
14230-4
8
Not connect
16
External DC power input, 8-32V
8
7
6
5
4
3
2
1
9 10 11 12 13 14 15 16
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