Audi OBD2 User Manual

Audi OBD2 connector pinout

Pin Number Description
1 IGN; Switched to +12V when the ignition is on
2 SAE J1850 Bus + (VPW / PWM)
3 Manufacturer Discretionary
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284)
7 ISO 9141-2 / ISO 14230-4 K Line
8 Manufacturer Discretionary
9 Manufacturer Discretionary
10 SAE J1850 Bus - (PWM-only)
11 Manufacturer Discretionary
12 Manufacturer Discretionary
13 Manufacturer Discretionary
14 CAN Low (ISO 15765-4 and SAE J2284)
15 ISO 9141-2 / ISO 14230-4 L Line (Optional)
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A

[ECU PINOUTS ALL BRANDS]

Acura OBD2 connector pinout

Pin Number Description
1 Manufacturer Discretionary
2 SAE J1850 Bus + (VPW / PWM)
3 Manufacturer Discretionary
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284)
7 ISO 9141-2 / ISO 14230-4 K Line
8 Manufacturer Discretionary
9 SCS (Service Check System) - diagnostic codes
10 SAE J1850 Bus - (PWM-only)
11 Manufacturer Discretionary
12 Programming out
13 Input/Output for VTM-4 and immobilizer control
14 CAN Low (ISO 15765-4 and SAE J2284)
15 ISO 9141-2 / ISO 14230-4 L Line (Optional)
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A

[ECU PINOUTS ALL BRANDS]

BMW OBD2 connector pinout

Pin
Number

1 Switched +12V Ignition Signal
2 Unused (or unknown)
3 Ethernet RX+
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284) (500Kbps)
7 ISO 9141-2 / ISO 14230-4 K Line (10.4Kbps)

8
9 TD (Tachometer Display) Signal / Engine RPM Signal

10 Unused (or unknown)
11 Ethernet RX­12 Ethernet TX+
13 Ethernet TX­14 CAN Low (ISO 15765-4 and SAE J2284) (500Kbps)
15 ISO 9141-2 / ISO 14230-4 L Line (10.4Kbps) (Optional)
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A

Description

Secondary K Line for Body/Chassis/Infotainment Modules Ethernet Enable
(via 510 Ohm, 0.6 Watt resistor to battery voltage)

[ECU PINOUTS ALL BRANDS]

Chrysler OBD2 connector pinout

Pin Number Description
1 Unused (or unknown)
2 SAE J1850 VPW Bus + (10.4Kbps)
3 CCD Bus +
4 Chassis Ground
5 Signal Ground

6

7

8 Unused (or unknown)
9 SCI B Trans (RX) (SAE J2610) (7812.5bps, 62.5Kbps, 125.0Kbps)
10 Unused (or unknown)
11 CCD Bus ­12 SCI B Engine (RX) (SAE J2610) (7812.5bps, 62.5Kbps, 125.0Kbps)
13 Unused (or unknown)

14

• CAN High (ISO 15765-4 and SAE J2284) (500Kbps)

• SCI A Engine (RX) (SAE J2610) (7812.5bps, 62.5Kbps, 125.0Kbps)

• ISO 9141-2 / ISO 14230-4 K Line (10.4Kbps)

• SCI A Engine (TX) (SAE J2610) (7812.5bps, 62.5Kbps, 125.0Kbps)

• SCI A Trans (TX) (SAE J2610) (7812.5bps, 62.5Kbps, 125.0Kbps)

• SCI B Engine (TX) (SAE J2610) (7812.5bps, 62.5Kbps, 125.0Kbps)

• CAN Low (ISO 15765-4 and SAE J2284) (500Kbps)

• SCI A Trans (RX) (SAE J2610) (7812.5bps, 62.5Kbps, 125.0Kbps)

[ECU PINOUTS ALL BRANDS]

15
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A

• ISO 9141-2 / ISO 14230-4 L Line (10.4Kbps) (Optional)

• SCI B Trans (TX) (SAE J2610) (7812.5bps, 62.5Kbps, 125.0Kbps)

Ford OBD2 connector pinout

Pin
Number

1

2 SAE J1850 PWM (Ford SCP) Bus + (41.6Kbps)

3

4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284) (500Kbps)
7 ISO 9141-2 / ISO 14230-4 K Line (10.4Kbps)

8

9 Battery Power (Switched) (vehicle battery power available via the ignition

Description

• Infotainment CAN High

• Ignition Control (activates low current switching device to power ignition
current)

• DCL +

• Medium-Speed CAN High (125Kbps, 250Kbps)

• UBP Network #1 (9600bps)

• Infotainment CAN Low

• Trigger Signal (multiple module trigger input controlled through the
communication link to initiate / terminate an event)

[ECU PINOUTS ALL BRANDS]

switch or ignition control [Pin 1])

10 SAE J1850 PWM (Ford SCP) Bus - (41.6Kbps)

• DCL -

11

12 Flash EEPROM
13
14 CAN Low (ISO 15765-4 and SAE J2284) (500Kbps)

15 Unused by Ford
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A

• Medium-Speed CAN Low (125Kbps, 250Kbps)

• UBP Network #2 (9600bps)

• FEPS — ECU Programming Voltage

• Flash EEPROM

GM OBD2 connector pinout

Pin Number Description
1
2 SAE J1850 VPW Bus + (10.4Kbps)

3 Object Detection CAN Bus +
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284) (500Kbps)
7 ISO 9141-2 / ISO 14230-4 K Line (10.4Kbps)

• Single-Wire CAN (SAE J2411 / GMW3089) (33.3Kbps)

• GM UART / ALDL (SAE J2740) (8192 bit/s)

[ECU PINOUTS ALL BRANDS]