DEF SCR SYSTEM (DCU)
5–286
1.
Set the starter switch to the "ON" position.
2.
Select [Engine coolant temperature] from [Data Monitor] on the
menu.
3.
When the engine coolant temperature (actual measured value) is
50
C {122
F}, check if the temperature output by the engine cool-
ant temperature sensor is 50°C {122
F}.
NO
YES
4
Check the coolant temperature sensor output signal [Hino-DX]
SAPH16F020400195
Standard values
Engine coolant temperature sensor output value:
50
C {122
F}
Do the measurements meet the standard value?
Go to step 5.
Replace the engine coolant temperature sen-
sor.
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 ...
