Page 1
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]
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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]
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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]
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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]
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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]
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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]
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8 Manufacturer Discretionary
9 GM UART / ALDL (SAE J2740) (8192 bit/s)
10 Unused (or unknown)
11 Object Detection CAN Bus 12 Chassis High-Speed CAN Bus + (500Kbps)
13 Chassis High-Speed CAN Bus - (500Kbps)
14 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
Honda 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
[ECU PINOUTS ALL BRANDS]
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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
Hyundai OBD2 connector pinout
Pin Number Description
1 Gearbox diagnostic
2 ABS diagnostic, BUS+ Line
3 Manufacturer Discretionary
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284), ABS/ASR diagnostic
7 Engine and gearbox diagnostic ISO 9141-2 / ISO 14230-4 K Line
8 ABS diagnostic
9 Cruise-control diagnostic
10 SAE J1850 Bus - (PWM-only)
11 Manufacturer Discretionary
[ECU PINOUTS ALL BRANDS]
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12 Airbag diagnostic
13 Manufacturer Discretionary
14 CAN Low (ISO 15765-4 and SAE J2284) VSS (vehicle speed)
15 ISO 9141-2 / ISO 14230-4 L Line (Optional)
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A
Infinity OBD2 connector pinout
Pin Number Description
1 CHECK
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 Ignition ON
9 ABS
10 SAE J1850 Bus - (PWM-only)
11 Adjust Switch
12 SCI TX
13 SCI RX
[ECU PINOUTS ALL BRANDS]
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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
KIA OBD2 connector pinout
Pin Number Description
1 Gearbox diagnostic
2 ABS diagnostic, BUS+ Line
3 Manufacturer Discretionary
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284), ABS/ASR diagnostic
7 Engine and gearbox diagnostic ISO 9141-2 / ISO 14230-4 K Line
8 ABS diagnostic
9 Cruise-control diagnostic
10 SAE J1850 Bus - (PWM-only)
11 Manufacturer Discretionary
12 Airbag diagnostic
13 Manufacturer Discretionary
14 CAN Low (ISO 15765-4 and SAE J2284) VSS (vehicle speed)
15 ISO 9141-2 / ISO 14230-4 L Line (Optional)
[ECU PINOUTS ALL BRANDS]
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16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A
Lexus 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 Tachometer ECM
10 SAE J1850 Bus - (PWM-only)
11 Manufacturer Discretionary
12 Brake Actuator Assembly
13
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
Timing check - ignition advance angle adjustment or ABS slow codes
out
[ECU PINOUTS ALL BRANDS]
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Mazda OBD2 connector pinout
Pin
Number
1 Manufacturer Discretionary
2 SAE J1850 Bus + (VPW / PWM)
3
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
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)
Description
Low speed (125Kb) CAN bus. This bus is used for some IC, RFA and
other units.
Low speed (125Kb) CAN bus. This bus is used for some IC, RFA and
other units.
[ECU PINOUTS ALL BRANDS]
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16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A
Mercedes Benz OBD2 connector pinout
Pin
Number
1
2 SAE J1850 Bus + (VPW / PWM)
3 TD engine rotation speed
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284)
7
8 Manufacturer Discretionary
9 ABS, ASR, ESP, ETS, BAS diagnostic
10 SAE J1850 Bus - (PWM-only)
11 Gearbox and other transmission components (EGS, ETC, FTC)
12 All activity modules (AAM), Radio (RD), ICS…
13 AB diagnostic - safety systems
14 CAN Low (ISO 15765-4 and SAE J2284)
Description
Ignition control (EZS), air-conditioner (KLA), PTS, safety systems
(Airbag, SRS, AB) and some other
ISO 9141-2 / ISO 14230-4 K Line Engine control diagnostic
(ME/MSM/CDI)
[ECU PINOUTS ALL BRANDS]
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15
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A
ISO 9141-2 / ISO 14230-4 L Line (Optional) IC, KI, TAU, LWR
diagnostic
Mitsubishi OBD2 connector pinout
Pin
Number
1 Diagnostic control
2 SAE J1850 Bus + (VPW / PWM)
3 SWS communication line
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284)
7
8 Manufacturer Discretionary
9 ETACS
10 SAE J1850 Bus - (PWM-only)
11 ECU optimisation control
12 Manufacturer Discretionary
13 Manufacturer Discretionary
Description
ISO 9141-2 / ISO 14230-4 K Line MPI, CVT, SRS airbags and
immobilizer
[ECU PINOUTS ALL BRANDS]
Page 15
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
Nissan OBD2 connector pinout
Pin Number Description
1 CHECK
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 Ignition ON
9 ABS
10 SAE J1850 Bus - (PWM-only)
11 Adjust Switch
12 SCI TX
13 SCI RX
14 CAN Low (ISO 15765-4 and SAE J2284)
15 ISO 9141-2 / ISO 14230-4 L Line (Optional)
[ECU PINOUTS ALL BRANDS]
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16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A
Renault OBD2 connector pinout
Pin
Number
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 Manufacturer Discretionary
10 SAE J1850 Bus - (PWM-only)
11 Manufacturer Discretionary
12
13
14 CAN Low (ISO 15765-4 and SAE J2284)
Description
LS CAN Bus used for low speed CAN bus, also called as multimedia
CAN bus
LS CAN Bus used for low speed CAN bus, also called as multimedia
CAN bus
[ECU PINOUTS ALL BRANDS]
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15 ISO 9141-2 / ISO 14230-4 L Line (Optional)
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A
Subaru OBD2 connector pinout
Pin Number Description
1 Ground
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 SSM (Subaru Select Monitor) timing pulse
10 SAE J1850 Bus - (PWM-only)
11 SSM (Subaru Select Monitor) timing pulse
12 SSM to ECM signal
13 ECM to SSM signal
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]
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Toyota 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 Tachometer ECM
10 SAE J1850 Bus - (PWM-only)
11 Manufacturer Discretionary
12 Brake Actuator Assembly
13
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
Timing check - ignition advance angle adjustment or ABS slow codes
out
[ECU PINOUTS ALL BRANDS]
Page 19
Volkswagen 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]
Page 20
Volvo OBD2 connector pinout
Pin Number Description
1 Manufacturer Discretionary
2 SAE J1850 Bus + (VPW / PWM)
3 Low speed CAN - high
4 Chassis Ground
5 Signal Ground
6 CAN High (ISO 15765-4 and SAE J2284) High speed CAN
7 ISO 9141-2 / ISO 14230-4 K Line ABS, DSA, TCU AW, IMMOB, ECC
8 Manufacturer Discretionary
9 Manufacturer Discretionary
10 SAE J1850 Bus - (PWM-only)
11 ECU, Fenix 5.1 (Volvo S40 and some others), Low speed CAN - low
12 Manufacturer Discretionary
13 Cruise-control
14 CAN Low (ISO 15765-4 and SAE J2284)
15 ISO 9141-2 / ISO 14230-4 L Line Motor
16 Vehicle Battery Power: Type "A" 12V/4A, Type "B" 24V/2A
[ECU PINOUTS ALL BRANDS]
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