RM35X0E _51 Engine / Hybrid System _078720 7GR-FKS ENGINE CONTROL _0381920 MASS AIR FLOW METER G

7GR-FKS ENGINE CONTROL  MASS AIR FLOW METER  ON-VEHICLE INSPECTION  


PROCEDURE

Hide 22204 1.INSPECT INTAKE MASS AIR FLOW METER SUB-ASSEMBLY

HINT:

Perform "Inspection After Repair" after replacing the intake mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION


a.

Read the value of Data List item "Mass Air Flow Sensor" using the GTS.

NOTICE:

Perform the inspection of the intake mass air flow meter sub-assembly while it is installed to the air cleaner cap sub-assembly (installed to the vehicle).


i.

Check and ensure the following conditions:

1.

Turn off all electrical loads, such as the air conditioning, etc.

2.

Check that the coolant temperature is 75°C (167°F) or more.

3.

Put the shift lever in the N position.



ii.

Connect the GTS to the DLC3.


iii.

Start the engine.


iv.

Turn the GTS on.


v.

According to the display on the GTS, read the Data List when the engine is running.

Powertrain > Engine > Data List
Tester Display
Mass Air Flow Sensor
50003 372 215
Standard Condition:
GTS Display Condition Specified Condition
Mass Air Flow Sensor Idling (engine warmed up) 2.6 to 3.7 gm/sec
2000 rpm (without load) 5.4 to 10.0 gm/sec
3000 rpm (without load) 10.6 to 15.8 gm/sec


If the result is not as specified, clean (air blow) the intake mass air flow meter sub-assembly.

After cleaning (air blowing) the intake mass air flow meter sub-assembly, perform an on-vehicle inspection of the intake mass air flow meter sub-assembly again and replace the intake mass air flow meter sub-assembly if the result is not as specified.

If the result is within the specified range, check the intake air temperature sensor (thermistor) resistance.

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>MASS AIR FLOW METER>INSPECTION



Hide 22204 2.CLEAN INTAKE MASS AIR FLOW METER SUB-ASSEMBLY

NOTICE:

If the mass air flow meter sub-assembly is removed and installed 10 times or more, the thread of the hole of the mass air flow meter sub-assembly may be damaged. Therefore, do not loosen the screws of the mass air flow meter sub-assembly.


a.

Remove the air cleaner cap sub-assembly.


b.
A489842
1.104,0.667 1.396,0.375 1.396,0.375 0.906,0.656 true 1.031,2.656 1.531,2.656 true 2.063,1.833 2.563,1.833 true 2.604,1.75 2.833,1.917 0.229,0.167 10 true *1 0.802,2.573 1.021,2.74 0.219,0.167 10 true *a 2.344,4.344 2.563,4.51 0.219,0.167 10 true *b 1.438,0.281 1.688,0.448 0.25,0.167 10 true *c
*1 Intake Mass Air Flow Meter Sub-assembly
*a Air Blow Gun
*b 10 mm (0.394 in.)
*c Airflow Hole


Clean the intake mass air flow meter sub-assembly.

NOTICE:
·

Do not contact the intake mass air flow meter sub-assembly with the nozzle of the air blow gun.

·

Do not insert the nozzle of the air blow gun into the airflow hole.



i.
A398469C01
0.125,0.125 0.365,0.302 0.24,0.177 10 false *a 1.313,0.24 1.552,0.406 0.24,0.167 10 false *b 1.563,0.573 1.792,0.74 0.229,0.167 10 false *c 0.688,0.906 0.927,1.083 0.24,0.177 10 false *d 0.677,1.708 0.917,1.885 0.24,0.177 10 false *e
*a Air Blow Duration
*b 3 to 6 Seconds
*c 1 Second
*d Air Blowing
*e Air Stopped


Using an air blow gun, clean the hole of the intake mass air flow meter sub-assembly by applying approximately 10 intermittent bursts of air to the airflow hole at a pressure of approximately 392 to 981 kPa (4.0 to 10.0 kgf/cm2, 57 to 142 psi).

HINT:

Apply 5 intermittent bursts of air to the airflow hole at 2 locations.




c.

Install the air cleaner cap sub-assembly.


Hide 3.PERFORM INITIALIZATION

a.

Perform "Inspection After Repair" after replacing the intake mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION