OBD II Pin assignments
08-31-2006, 07:47 AM
#2
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The OBD-II specification provides for a standarized hardware interface—the female 16-pin (2x8) J1962 connector. Unlike the OBD-I connector, which was sometimes found under the hood of the vehicle, the OBD-II connector is always located on the driver's side of the passenger compartment near the center console. SAE J1962 defines the pinout of the connector as:
The OBD-II specification provides for a standarized hardware interface—the female 16-pin (2x8) J1962 connector. Unlike the OBD-I connector, which was sometimes found under the hood of the vehicle, the OBD-II connector is always located on the driver's side of the passenger compartment near the center console. SAE J1962 defines the pinout of the connector as:
- -
- Bus positive Line of SAE-J1850
- -
- Chassis ground
- Signal ground
- CAN high (ISO 15765-4 and SAE-J2234)
- K line of ISO 9141-2 and ISO 14230-4
- -
- -
- Bus negative Line of SAE-J1850
- -
- -
- -
- CAN low (ISO 15765-4 and SAE-J2234)
- L line of ISO 9141-2 and ISO 14230-4
- Battery voltage
Last edited by dewmanshu; 04-20-2008 at 07:35 PM.
08-31-2006, 11:15 PM
#3
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Yup thats correct and pretty much covers the 3 protocols Your trucks uses SAE J1850 VPW (Variable Pulse Width Modulation)
Pin 2 - J1850 Bus+
Pin 4 - Chassis Ground
Pin 5 - Signal Ground
Pin 14 - CAN Low
Pin 16 - Battery Power
Pin 9 is the mystery pin witch is a UART line for seiral data...
Pin 2 - J1850 Bus+
Pin 4 - Chassis Ground
Pin 5 - Signal Ground
Pin 14 - CAN Low
Pin 16 - Battery Power
Pin 9 is the mystery pin witch is a UART line for seiral data...
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