DESCRIPTION If the collision door lock release function does not operate normally, or an open or short in the GSW input circuit of the main body ECU (multiplex network body ECU) is detected, DTC B1243 will be stored.    DTC No.   Detection Item   DTC Detection Condition   Trouble Area     B1243   GS
   
   
 
	
   TERMINALS OF ECU CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)     *1   Main Body ECU (Multiplex Network Body ECU)   -   -    (a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Click here    (b) Co