ENGINE CONTROL SYSTEM (J08E)
4–1179
Check the injection quantity and the rotational fluctuation.
1.
Start the engine.
2.
Select [Injection quantity] from the [Data Monitor] menu and mea-
sure the amount of fuel consumption.
3.
Select [Engine speed] from the [Data Monitor] menu and measure
the rotational fluctuation.
NO
YES
14
Inspect injector [Hino-DX]
Select
Engine
SAPH16F010300923
Measurement conditions
Engine speed: 1,500 r/min No-load,
T/M shift lever: Neutral position, A/C off and
Air compressor un-operating.
Engine coolant temperature: more than 80
C {176
F}
E
n
gi
n
e
Ne
(r
p
m
)
NE Rotational fluctuation
@1,500 rpm (measurement by Hino-DX)
SAPH16F010300924
Standard values
Type of
MT
Allison 2200
Allison 2500
Allison 3500
Q (mm
3
/st)
5.0q
6.0q
Ne (r/min)
26
Do the measurements meet the standard values?
(Do the injection volume and the rotational fluctuation meet their standard values?)
•
You forgot to press the DPR switch.
•
Replace the DPR filter and the burner
nozzle and clean the igniter.
•
After DPR manual regeneration, the
diagnosis procedure will be complete.
Perform "After-inspection work" of INFOR-
MATION section.
Replace the injector.
Perform "After inspection work" of INFOR-
MATION SECTION.
Summary of Contents for 238
Page 201: ...ENGINE CONTROL SYSTEM J08E 4 978 Harness disconnection or short circuit ...
Page 215: ...ENGINE CONTROL SYSTEM J08E 4 992 Malfunction of sensor 2 Malfunction of engine ECU ...
Page 301: ...ENGINE CONTROL SYSTEM J08E 4 1078 8 Estimated failure factors Malfunction of engine ECU ...
Page 709: ...DEF SCR SYSTEM DCU 5 143 8 Estimated failure factors DEF pump pressure sensor malfunction ...
