After you hook up the J1922 link, you will need to change the customer parameter, Powertrain Data Links to both the J1922 and J1939..........if the ECM will not allow you to reset this parameter to this setting...........then you'll have to flash the ECM with a flash file dated Mar 99 and set the parameter then. The J1922 and J1939 was used together for a short period of time in the early 70 pin engines, After Jan 00 everything went to just J1939
C15 eng swap = ABS light on at all-times
Discussion in 'Trucks [ Eighteen Wheelers ]' started by harris2108, Oct 14, 2009.
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