Only Wireless Control Function Is Inoperative

FUNCTION DESCRIPTION

Door control receiver (built in the inner rear view mirror) received a signal from the transmitter and send it to the theft warning ECU by line. And the theft warning ECU transmits the signal multiply to multiplex network each door ECU, by which the multiplex network door ECU controls the door lock, the front controller controls the front hazard lights, and the rear J/B controls the rear hazard lights

NOTE: Multiplex function control system has a function with a large-scale body multiplex communications. First of all, inspect the communication function depending on the HOW TO PROCEED WITH TROUBLESHOOTING, and check there is no abnormality in the communication system. then finally proceed with the troubleshooting. Also, when a short circuit exists in the wire harness between the theft warning ECU and the door control receiver, diagnosis (DTC) code B1242 is output and the wireless function does not operate.

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INSPECTION PROCEDURE