Toyota Yaris: Mass Air Flow Meter / Inspection
INSPECTION
PROCEDURE
1. INSPECT MASS AIR FLOW METER
| (a) Perform a visual check for any foreign matter on the temperature sensor (thermistor) of the mass air flow meter shown in the illustration. OK: There is no foreign matter. If the result is not as specified, replace the mass air flow meter. | |
| (b) Measure the resistance according to the value(s) in the table below. Standard Resistance: | Tester Connection | Condition | Specified Condition | | D23-4 (THA) - D23-2 (E2G) | -20°C (-4°F) | 13.6 to 18.4 kΩ | | D23-4 (THA) - D23-2 (E2G) | 20°C (68°F) | 2.21 to 2.69 kΩ | | D23-4 (THA) - D23-2 (E2G) | 60°C (140°F) | 0.49 to 0.67 kΩ | If the result is not as specified, replace the mass air flow meter. |
| | *a | Component without harness connected (Mass Air Flow Meter) | | |
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...
INSTALLATION PROCEDURE 1. INSTALL MASS AIR FLOW METER (a) Install the mass air flow meter to the air cleaner cap sub-assembly with the 2 screws. NOTICE:
If the mass air flow meter has been struck or dropped, replace it...
Other information:
DESCRIPTION If warm air blows from the registers regardless of the temperature setting of the air conditioning system, the following factors may be the cause. Symptom Factor No cool air comes out (Blower control is normal)
Compressor with pulley assembly malfunction
Refrigerant pressure is extremely high or low
Refrigerant volume (low)
Clogged cooler condenser assembly fins
Cooling fan system malfunction
Mechanical locking of damper and damper link
No...
DTC CHECK / CLEAR DTC CHECK (a) Check for DTC(s). Chassis > Four Wheel Drive > Trouble Codes (b) Check the details of the DTCs. NOTICE:
Make sure to clear the DTCs after repair.
Display Item Description Test Failed Shows the malfunction judgment results during the current trip...
Categories

Smart key
Auxiliary key
Key code number plate
To use the auxiliary key, press the knob and pull out the auxiliary key
from the smart key.

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