Has 16 teeth altogether, 8 on the upper row and 8 on the bottom. Which OBD2 protocol is supported by my vehicle?Ĭan examine OBD2 connector pins to find out which protocol is supported by your The metallic contacts inside the pins are 4, 5, 7, 15, (plus 16).Ħ in a connector with material contacts 4, 5, 6, 14 and 16 then it’s an ISO 15765 CAN protocol. If the connector has pin 7 and an optional pin 15 then it could be ISO 9141 or ISO 14230 KWP2000.Material contacts inside pins 2, 4, 5, and 16 but there’s no PIN 10 then it’s a The connector with metallic pins 2, 4, 5, 10 and 16 then it’s a J1850 PWM protocol. The easiest way to identify an OBD2 protocol is to look at the alignment and availability of the pins. Note: Pin 4 (chassis), 5(signal ground), and 16 (Vehicle Battery Positive) are must-haves for any protocols.
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