Inspection Procedure Followed When "Exhaust Gas After Treatment System Maintenance Requirement Light" Light Up - Hino S5-LJ05E04A Workshop Manual

11–28
INSPECTION PROCEDURE FOLLOWED WHEN "EXHAUST GAS AFTER
TREATMENT SYSTEM MAINTENANCE REQUIREMENT LIGHT" LIGHT UP
NORMAL TRAVELING
EXHAUST GAS AFTER TREATMENT
SYSTEM MAINTENANCE
REQUIREMENT LIGHT LIGHT UP
RECEIVING THE VEHICLE
FOR SAFETY CHECK
CONNECT HINO-DX
1. CHECKING THE
CURRENT CONDITION
2. DIAGNOSIS
ENGINE INSPECTION
As a damage in the engine may degrade DPR performance, first check condition of the engine.
Injection system inspection: Fuel injection quantity at idling speed and at idling-up speed
Fuel system inspection: Clogging in the fuel filter
Air intake system inspection: Clogging in the air filter element; air flow meter inspection
EGR system inspection: Connect HINO-DX to run the forced driving mode and check opening followability.
VNT inspection: Connect HINO-DX to run the forced driving mode and check nozzle opening followability.
Exhaust brake operation check: Check a difference in injection quantity between in ON mode and in OFF
mode. (Refer to Page 11-32)
Fuel addition valve system:
Check that connectors are not disconnected, exhaust gas is not emitted and fuel or water is not leaking.
Fuel shutoff valve system: Check that connectors are not disconnected and fuel is not leaking.
< Engine inspection found normal >
If normal manual regeneration is not complete, check and clean the fuel addition valve.
(Refer to Page 11-52, 53)
3. FORCED REGENERATION
4. FORCED REGENERATION
COMPLETION
5. DIAGNOSIS
6. MEASUREMENT OF
BACK PRESSURE
The display will be cleared by HINO-DX.
COMPLETION
EXHAUST (J05E)
<Checking a fault code against HINO-DX>
PAST FAULT CHECK
DPR STATE MONITOR CHECK
(If the engine has a past fault history, inspect the engine before inspecting DPR.)
<Forced regeneration by way of HINO-DX>
Execution of manual regeneration
Confirm the combustible doesn't exist near the exhaust pipe.
(Regeneration is not complete and
the malfunction indicator light comes on.)
<Check the back pressure sensor value while raising
the engine revolution up to the no load maximum revolution.>
Monitor the back pressure value of the back pressure sensor.
Monitor the engine revolution.
EN01F02127100402002004
FILTER CLEANING
SHTS021271000042