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New energy commercial vehicle OBD interface, Shaanxi Automobile Heavy Truck, JAC, FAW Jiefang, XCMG, Dongfeng

Author:F-Diesel Date:August 21, 2025 3:38 AM Tag:[ OBD , CAN high and CAN low pinout , power CAN bus pin mapping , vehicle CAN bus pin assignment ]
This knowledge base introduces or describes the Comprehensive OBD pin definition guide for various Tebajia system vehicle models, detailing Vehicle CAN (CAN1) and Power CAN (CAN2) high/low pin assignments, baud rates, and exact connector locations. Includes multiple OBD port layouts under driver and co-driver seats.

Table of contents

1、OBD pin definition for various models

         1.1.There is an OBD cover in front of the main driver's seat

         1.2.In the maintenance compartment below the main driver's seat

         1.3.OBD interface below the main driver's seat

2、Connect to TCU

         2.1.One OBD port each under the driver's and co-driver's seats

 

1、 OBD pin definition for various models

 

 

 Tip:The definition is only applicable to the Tebajia system

 

 

Vehicle CAN (CAN1_500k) H: 3

Power CAN (CAN2_500k) H: 6

Vehicle CAN (CAN1) L: 11

Power CAN (CAN2) L: 14

 

Location: There is an OBD cover in front of the main driver's seat

 

 

Vehicle CAN (CAN1_250k) H: 6

Power CAN (CAN2_500k) H: 11

Vehicle CAN (CAN1) L: 14

Power CAN (CAN2) L: 12

 

 

1.2 In the maintenance compartment below the main driver's seat

Vehicle CAN (CAN1_500k) H: 1

Power CAN (CAN2_500k) H: 6

Vehicle CAN (CAN1) L: 9

Power CAN (CAN2) L: 14

 

1.3 Location: OBD interface below the main driver's seat

Vehicle CAN (CAN1_250k) H: 2

Power CAN (CAN2_500k) H: 3

Vehicle CAN (CAN1) L: 10

Power CAN (CAN2) L: 11

 

 

Vehicle CAN (CAN1_500k) H: 3

Power CAN (CAN2_500k) H: 6

 

2 、Connect to TCU:

 

Vehicle CAN (CAN1_500k) H: 1

Power CAN (CAN2_500k) H: 3

Vehicle CAN (CAN1) L: 9

Power CAN (CAN2) L: 11

 

2.1 Location: One OBD port each under the driver's and co-driver's seats

 

 

Vehicle CAN (CAN1_500k) H: 6

Power CAN (CAN2_500k) H: 1

Vehicle CAN (CAN1) L: 14

Power CAN (CAN2) L: 9.