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takeda · 04-30-2006, 03:01 PM

I am really happy that i am answering my self. Although i am waiting for an expert here...

thus, from the FAQ in this section i read

There are three basic OBD-II protocols in use, each with minor variations on the communication pattern between the on-board diagnostic computer and the scanner console or tool. While there have been some manufacturer changes between protocols in the past few years, as a rule of thumb, Chrysler products and all European and most Asian imports use ISO 9141 circuitry. GM cars and light trucks use SAE J1850 VPW (Variable Pulse Width Modulation), and Fords use SAE J1850 PWM (Pulse Width Modulation) communication patterns.

Is the bold typed a fact? if so BMW uses RSR232, ISO9141 circuitry.

Sorry for posting and reposting i am about to pick up an engines and mechanical parts, and i want to proceed with caution to the correct choise................................

thanks again

04-30-2006, 03:01 PM	#6
takeda Newbie Join Date: Apr 2006 Posts: 21	I am really happy that i am answering my self. Although i am waiting for an expert here... thus, from the FAQ in this section i read There are three basic OBD-II protocols in use, each with minor variations on the communication pattern between the on-board diagnostic computer and the scanner console or tool. While there have been some manufacturer changes between protocols in the past few years, as a rule of thumb, Chrysler products and all European and most Asian imports use ISO 9141 circuitry. GM cars and light trucks use SAE J1850 VPW (Variable Pulse Width Modulation), and Fords use SAE J1850 PWM (Pulse Width Modulation) communication patterns. Is the bold typed a fact? if so BMW uses RSR232, ISO9141 circuitry. Sorry for posting and reposting i am about to pick up an engines and mechanical parts, and i want to proceed with caution to the correct choise................................ thanks again