6 Pin Diagnostic Connector Diagram. Generally light and medium duty trucks use obdii ports whereas heavy duty trucks use 6 pin or 9 pin ports. Resistance values for both networks should be 60ohms 3ohms checking voltages j1939 h1939.
Volvo and mack trucks with obdii ports use a different more heavy duty cable. Obd 2 universal iso 15765 4 can sae j1850 pwm sae j1850 vpw iso 9141 2 iso 14230 4 and sae j1939 diagnostic cable pinout status. J1939 h1939 500k baud network test the resistance between pins c d at the diagnostic connector.
Harness connector guide jbus connectors obdii connector class 1 6 vehicles obdii hd connector mack volvo 6 pin 9 pin black 9 pin green 9 pin locking nut mount 16 pin obdii 16 pin obdii hd 2 0 part no.
50098 50101 50102 51521 black 51522 green 50100 50099. J1939 h1939 500k baud network test the resistance between pins c d at the diagnostic connector. Unlike the obd i connector which was found under the hood of the vehicle the obd ii connector is located on the driver s side of the passenger compartment near the center console. Resistance values for both networks should be 60ohms 3ohms checking voltages j1939 h1939.
