ENGINE (J05E)/TROUBLESHOOTING
2–119
1.
Warm up the engine. (Coolant temperature: 80
C {176
F} or
more)
2.
Turn OFF the devices that place load on the engine, such as the
air conditioner and PTO.
<Inspection procedure>
- Adjust the engine revolution to 980 r/min by using the idling volume.
(For vehicles without the idling volume, adjust the engine revolution
to 980 r/min by using [Data monitor and Active test] for the diagnostic
system.)
- Select [Engine] on the screen of the diagnostic system.
- Select [Injection quantity] from [Data monitor and Active test].
- Turn ON/OFF the exhaust brake switch, and check the difference
between the injection quantity of the injector while the exhaust brake
is working and the injection quantity when the exhaust brake is not
actuated.
NO
YES
5
Inspect the exhaust brake valve
SHTS021270300109
Measurement conditions
Standard values
• Engine revolution: 980 r/
min
• Engine coolant tempera-
ture:
80
C {176
F} or more
• Turn OFF the air condi-
tioner, PTO, and other
devices that place load on
the engine.
10
–
18 mm
3
/st
Is the measured value within the standard values? (There shall be a change in the injection quan-
tity between while the exhaust brake is working and when it is not actuated.)
Go to step 6.
Adjust the butterfly opening of the exhaust
brake. (Refer to the service manual.)