Hino 238, Workshop Manual

Page: 182 / 919

ENGINE CONTROL SYSTEM (J08E) 4–959
1. Connect the diesel throttle connector.
2. Connect the vehicle to Hino-DX.
3. Set the starter switch to the "ON" position.
4. Select [Check functions] from the menu and check the operation of
the diesel (intake) throttle valve.
! CAUTION
•
Make sure the engine is stopped; otherwise, the engine may
be damaged.
<Inspection procedure>
(1) Select [Check functions].
(2) Select [Intake throttle valve check].
(3) Click [Check start].
(4) Select [Valve UP].

Check the operation of the throttle valve.
(5) Select [Valve DOWN].

Check the operation of the throttle valve.
HINT
• The throttle valve opening position changes of around 10 %
per step between 0
–
100 %.
NO YES
1. Warm-up the engine (engine coolant temperature: 60

C {140

F}
or more)
2. Stop the engine.
3. Select [Engine] and check if P2100 has been detected in [Fault
Information].
NO YES
(4)
(5)
(3)
(1)
(2)
SAPH16F010300743
Is the throttle valve operating normally?
Go to step 6. Replace the diesel throttle valve.
Perform "After-inspection work" of INFOR-
MATION section.
6
Check the DTC detected (Engine ECU) [Hino-DX]
Select
Engine
SAPH16F010300744
Has DTC P2100 been detected?
Replace the engine ECU.
Perform "After-inspection work" of INFOR-
MATION section. Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.