Toyota Corolla Cross: Steering Knuckle

 Catalyst System Efficiency Below Threshold Bank 1 (P042000)

MONITOR DESCRIPTION The ECM uses air fuel ratio sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air fuel ratio sensor (sensor 1), sends pre-catalyst information to the ECM. The second sensor, the air fuel ratio sensor

 Blower Motor Circuit

DESCRIPTION The blower motor with fan sub-assembly is operated by signals from the air conditioning amplifier assembly. Blower motor speed signals are transmitted in accordance with changes in the duty ratio. If the airflow volume is low or the blower speed cannot be changed, the following factors