Toyota Corolla Cross: Transponder Key Ecu

 IG2 Signal Circuit Short to Auxiliary Battery (P253012)

DESCRIPTION The hybrid vehicle control ECU compares the IGP signal to the IG control status signal sent from the certification ECU (smart key ECU assembly) to detect a stuck on malfunction of the IGP signal. HINT: If DTC P253012 is stored, the ignition switch will turn off (READY off). DTC

 Steering Lock System Missing Message (B278187,B278196,B278211,B278215,B279F1C)

DESCRIPTION As this DTC is not normally output, it may be due to noise in the LIN communication system, etc. DTC No. Detection Item DTC Detection Condition Trouble Area Note B278196 Steering Lock System Component Internal Failure Noise in the LIN communication sys