This cable can not work if your car uses a protocol/bussystem like VPW, PWM or CAN-bus. Terminal K = Bus of communication * Terminal L = Ignition for waking up car computing system (ECU: Engine Control Unit) * Existed 3 different protocols with same OBD2 connector incl. ISO/KWP, VPW, PMW * This K/L Diagnostic interface & cables work on ISO/KWP (Key Word Protocol) launched after 1996 only. * Supported also ISO9141 protocol/OBDII Plug: J1962 16-Pin Male /USB Port enabled