HINO 600 Series 15MY DCU P202E DEF Injector Abnormality Repair

This instruction show you guide on how to diagnostics and repair HINO 600 series truck 15MY DCU Doser 500K P202E abnormality in DEF injector.

Preparations:

Nexiq USB2 Diagnostic Adapter

2024.03 HINO Diagnostic Explorer DX3/DX2 Diagnostic Software Free Download

HINO Trucks EPC Electronic Parts Catalog 2018 2016 Free Download

 

 

Procedures:

Step 1:Inspect the DEF pipe (pressure line) between the DEF pump and the DEF injector

Was any failure found?

Yes,replace the DEF pipe

Perform “After-inspection work” of INFORMATION section

No,go to step2

 

Step 2:Inspect DEF injector (1)

NOTICE

Prepare a beaker or similar, plus a larger measuring vessel for measuring the DEF to be injected, before perform this inspection.

 

(If the vessel is small, there is dispersion at the time of injection from the injector, and the measuring quantity decreases.)

 

1.Set the starter switch to the “LOCK” position.

2.Remove the DEF injector from the muffler.

 

HINT

Refer to the workshop manual “SELECTIVE CATALYTIC REDUCTION (SCR)” in the chapter “EMISSION CONTROL (J08E)” (S5-CJ08E11* or S5-UJ08E11*) for removal and installation of the DEF injector.

3.Connect the vehicle to HINO DXⅡ.

4.Set the starter switch to the “ON” position.

5.Select [DCU].

6.Select [Inspection Menu] on HINO DXⅡ menu and check the operation of the DEF injector.

<Inspection procedure>

(1) Select [Inspection Menu].

(2) Select [DEF solution addition test].

(3) Perform addition test as instructed on the HINO DXⅡ screen.

(Perform all three patterns)

 

NOTICE

When the DEF tank temperature is -5 °C (23 °F) or lower, perform warm-up to raise it to 10 °C (50 °F) or higher.

Is operation normal?

Yes,procedure completed.DEF crystal clogging is considered resolved.

Perform “After-inspection work” of INFORMATION section

No,go to step3

 

 

Step 3:Inspect the DEF injector (2)

1.Set the starter switch to the “LOCK” position.

2.Replace DEF injector with a new one. (Do not install it on the muffler.)

3.Perform step 2 again.

 

Is operation normal?

Yes,new injector installed in the muffler,procedure completed.

After installing the injector,idle the engine (for about 10 mins) and on the menu [Data monitor setting] check if the DEF pressure is stable between 800kPa (116psi) and 1051kPa(152psi)

Perform “After-inspection work” of INFORMATION section

 

No,Replace the DEF pipe (pressure pipe).After replacing the pipe,idle the engine (for about 10 min) and on the menu[Data monitor setting] check if the DEF pressure is stable between 800kPa(116psi) and 1051kPa(152psi).

Perform “After-inspection work” of INFORMATION section.

HINO DX2 software