8
Reference for Connector Pinouts and Cable Signal Mappings
78
Keysight AP1200A Multi-Protocol Vehicle Network Interface User Guide
AP1200A-MUL DB-25F to OBD-II Cable Connector Pinouts and
Signal Mapping
These two cables have the same pinouts and signal mappings, as they differ only
in the physical construction of the OBD-II connector.
DB-25 Connector Pinout
shows the pinout of the DB-25 connector.
Table 8-11
DB-25 Connector Pinout
Pin Number
Name
Description
1
N/C
No connection
2
N/C
No connection
3
N/C
No connection
4
N/C
No connection
5
MS CAN H
Medium Speed CAN channel, high
6
MS CAN L
Medium Speed CAN channel, low
7
ISO L
ISO 9141-2 L-Line
8
ISO9141/K/LIN1
ISO 9141-2 K-Line / LIN channel 1
9
N/C
No connection
10
N/C
No connection
11
N/C
No connection
12
N/C
No connection
13
GND
Ground
14
HS CAN 1 H
High Speed CAN channel 1, high
15
HS CAN 1 L
High Speed CAN channel 1, low
16
HS CAN 2 H
High Speed CAN channel 2, high
17
HS CAN 2 L
High Speed CAN channel 2, low
18
N/C
No connection