DEF SCR SYSTEM (DCU)
5–330
1.
Set the starter switch to the "LOCK" position.
2.
Disconnect the intake manifold temperature sensor connector.
3.
Use the electrical tester to measure the resistance between the
terminals of the intake manifold temperature sensor.
NO
YES
1.
Replace NOx sensor 2 with a new sensor.
2.
Set the starter switch to the "ON" position.
3.
Select [DCU] and check if P2212 has been detected in [Fault Infor-
mation].
NO
YES
9
Inspect the Intake manifold temperature sensor unit
THG
E2
SAPH16F020400227
Measurement
conditions
Tester
connections
Standard values
Starter switch:
LOCK
Intake manifold
temperature
sensor
THG
–
E2
20
C {68
F}:
7.336
–
5.794 k
50
C {122
F}:
2.435
–
2.41 k
Do the measurements meet the standard value?
Go
to
step
10.
Replace the Intake manifold temperature
sensor.
Perform "After-inspection work" of INFOR-
MATION section.
10
Inspection of the NOx sensor 2 [Hino-DX]
Select
DCU
SAPH16F020400228
Has DTC P2212 been detected?
Replace the DCU.
Perform "After-inspection work" of INFOR-
MATION section.
NOx sensor 2 is faulty. Install a new NOx sen-
sor 2.
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 ...
