This DTC is stored when LIN communication between the rear power window regulator motor LH and main body ECU (cowl side junction block LH) stops for 10 seconds or more.
DTC B1249 is stored when communication between the double lock door control relay and main body ECU (cowl side junction block LH) stops for more than 10 seconds.
This DTC is stored when LIN communication between the rear power window regulator motor RH and main body ECU (cowl side junction block LH) stops for 10 seconds or more.