INTAKE (J05E)
9–33
INSPECTION
EN01F02114080402009002
1.
INSPECTING THE AIR FLOW SENSOR (INSPECTING AND
ADJUSTING INTAKE AIR FLOW USING HINO-DX)
! CAUTION
The air flow sensor is one of the fundamental parts of the
"exhaust gas purification device (EGR system)." Ensure to imple-
ment inspection when storing the vehicle (12-month inspection).
NOTICE
•
An air flow sensor is adopted with this vehicle as a compo-
nent part of the exhaust gas purification system.
•
Replace with a new air flow sensor if the inspection result of
this method is not within the specified range.
•
Before implementing the "EGR solenoid valve operation
check by using the HINO-DX," inspect this air flow sensor.
(1)
Before inspection, clean the air cleaner element or replace with a
new one. Prepare a new air flow sensor aside from the one
mounted to the vehicle.
(2)
Mount the HINO-DX.
(3)
Measure the intake air volume at NMR (see the following) by
using the "air flow sensor mounted to the vehicle" in accordance
with "measurement of intake air volume" of the HINO-DX.... (A)
NOTICE
NMR (No Load Maximum Revolution)
(4)
Warm up the engine fully first. After confirming the safety of sur-
roundings, depress the accelerator fully with the engine at idle to
stabilize the revolution. (Keep depressing down on the accelera-
tor.)
Read the "engine revolution (r/min.)" and "intake air volume (g/
sec)" from the computer screen.
(5)
Stop the engine and put the starter key at the LOCK position.
Separate the air flow sensor connector and remove the air flow
sensor from the intake pipe.
(6)
After mounting the prepared new air flow sensor, connect the con-
nector securely.
(7)
By using the new air flow sensor, measure the intake air volume
as in the step (3) above.... (B)
CONNECTOR
AIR FLOW
SENSOR
SHTS021270800049
