RM38N0EC _51 Engine / Hybrid System _111785 M20C-FKS, M20D-FKS ENGINE CONTROL _0503273 MASS AIR FLOW METER G

M20C-FKS, M20D-FKS ENGINE CONTROL  MASS AIR FLOW METER  ON-VEHICLE INSPECTION  


PROCEDURE

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

HINT:

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

Click hereEngine / Hybrid System>M20C-FKS, M20D-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 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.

Start the engine.


iii.

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 (shift lever in N, engine warmed up and A/C off) 1.5 to 3.3 gm/sec
3000 rpm (shift lever in N, engine warmed up and A/C off) 8.0 to 13.0 gm/sec


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

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

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>MASS AIR FLOW METER>INSPECTION



Hide 22204 2.CLEAN 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.
A489842C01
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 Mass Air Flow Meter Sub-assembly
*a Air Blow Gun
*b 10 mm (0.394 in.)
*c Airflow Hole


Clean the mass air flow meter sub-assembly.

NOTICE:
·

Do not contact the 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 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 mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION