OBD-II to dual DB9 pinout

This guide is applicable to the following device / devices:

Mini

TMU CM4

CAN-FD Pro

CAN-FD Pro +IP67 casing

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This guide provides detailed pinout information for the OBD-II to dual DB9 adapter cable. Use this reference to understand the pin assignments, connector configurations, and signal routing for connecting your AutoPi device to external systems via DB9 connectors.

The following is the size and dimensions:

Pinout

AutoPi function	OBD-II Connector	DB9 CH1	DB9 CH2
Power	Pin 16	Pin 1 (Power)	Pin 1 (Power)
GND	Pin 5	Pin 3 + Pin 6 (GND)	Pin 3 + Pin 6 (GND)
MS CAN Low	Pin 11	Pin 2 (CAN1 Low)	NC
MS CAN High	Pin 3	Pin 7 (CAN1 High)	NC
HS CAN Low	Pin 14	NC	Pin 2 (CAN2 Low)
HS CAN High	Pin 6	NC	Pin 7 (CAN2 High)
HAT Pin 11	Pin 9	Pin 4 (LIN1)	NC
HAT Pin 12	Pin 12	Pin 9 (LIN1 VBat)	NC
HAT Pin 5	Pin 1	NC	Pin 4 (LIN2)
HAT Pin 8	Pin 2	NC	Pin 9 (LIN2 VBat)

info

This adapter cable can be bought through AutoPi shop: OBD-II to dual DB9 adapter cable.