Toyota Corolla Cross: Telematics System

 ECU Power Source Circuit

DESCRIPTION If the ignition switch is ON, the hybrid vehicle control ECU applies current to the MREL terminal to turn the IGCT relay on. This supplies power to the +B1 terminal. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: After the ignition switch is turned off, there may be a waitin

 Power Source Mode does not Change to ON (IG and ACC)

DESCRIPTION When the ignition switch cannot be turned to ACC or ON, interior verification may be abnormal or there may be a malfunction in the ACC relay or IG relay circuit. If interior verification cannot be performed, the certification ECU (smart key ECU assembly) may be malfunctioning or communic