Toyota Corolla Cross: M20a-fks Spark Plug

 ECUB Circuit Short to Ground or Open (B242F14)

DESCRIPTION The headlight ECU sub-assembly operates using the power source voltage input from the IGR terminal and ECUB terminal. The power source voltage of the ECUB terminal is supplied when the main body ECU (multiplex network body ECU) turns the ECUB power supply relay (H-LP LH relay and H-LP R

 Power Back Door does not Operate Using Outside Switch

DESCRIPTION The No. 1 power back door control switch signal is sent to the multiplex network door ECU. If the power back door does not operate using the No. 1 power back door control switch, a No. 1 power back door control switch circuit malfunction is a possible cause. WIRING DIAGRAM CAUTION / N