DEF SCR SYSTEM (DCU)
5–326
1.
Check the installation of the engine coolant temperature sensor is
properly installed.
2.
Make sure there is no dirt or damage to the engine coolant tem-
perature sensor.
NO
YES
1.
Set the starter switch to the "ON" position.
2.
Select [Engine].
3.
Select [Engine coolant temperature] from [Data Monitor] on the
menu.
4.
When the engine coolant temperature (actual measured value) is
50
C {122
F}, check if the temperature output by the coolant tem-
perature sensor is 50
C {122
F}.
3
Inspect the engine coolant temperature sensor
Engine coolant temperature sensor 1
SAPH16F020400222
Was any failure found?
Clean the engine coolant temperature sensor
and install it properly. If damaged, replace
the engine coolant temperature sensor.
Perform "After-inspection work" of INFOR-
MATION section.
Go to step 4.
4
Check the engine coolant temperature sensor output signal [Hino-DX]
SAPH16F020400223
Standard values
Engine coolant temperature sensor output value:
50
C {122
F}
Do the measurements meet the standard value?
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 ...
