Toyota Corolla Cross: Intuitive Parking Assist System

 A/C Switch Indicator does not Turn On

DESCRIPTION If none of the switch indicators on the air conditioning control assembly illuminate, the following factors may be the cause. Symptom Factor A/C switch indicator does not illuminate Air conditioning amplifier assembly malfunction Air conditioning control

 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