Toyota Yaris: Mass Air Flow Meter / On-vehicle Inspection

1. Turn off all electrical loads, such as the air condition, etc.
2. Check that the coolant temperature is 75 °C (167 °F) or more.
3. Put the Shift Lever in the N position.

Components

C..

Removal

REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the mass air flow meter removal/installation are shown below...

Other information:

Toyota Yaris XP210 (2020-2026) Owner's Manual: Tire Pressure Monitoring System (If equipped)

The Tire Pressure Monitoring System (TPMS) monitors the air pressure of all four tires. If the air pressure of one or more tires is too low, the system warns the driver by indicating the tire pressure monitoring system warning light in the combination meter and operating a beep sound...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Fail-safe Chart

FAIL-SAFE CHART If any of the following DTCs are stored, the engine stop and start ECU enters fail-safe mode to preserve vehicle operability. DTC Component Fail-safe Operation Fail-safe Deactivation Condition P033562 Open in engine speed signal circuit Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control All of the following conditions are met for 10 seconds: Normal communication with ECM Engine speed 500 rpm or higher Engine speed (communication signal) 500 rpm or higher Difference between engine speed from pulse signal and engine speed from communication signal is less than 100 rpm P055500 P05552A Vacuum sensor assembly Brake booster assembly Vacuum hose (brake booster hose) Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control One of the following conditions is met: Vacuum changes while the brake pedal is depressed Vacuum changes a specified number of times while the vehicle is being driven faster than a certain vehicle speed P055511 P055515 Vacuum sensor assembly circuit Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control Sensor output is within standard range P060629 Engine stop and start ECU Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control Pass condition detected and ignition switch turned to ON P060B1C P060B49 P060B71 Analog to digital converter (Engine stop and start ECU) Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control Pass condition detected and ignition switch turned to ON P061519 ST NO...