Inspection Procedure: P0404 - Hino Motors HINO 155 series Workshop Manual

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INSPECTION PROCEDURE: P0404

1
Check the DTC detected (Engine ECU)
Has a DTC other than P0404 been detected?
Go to diagnosis procedure of a related DTC.
2
Inspect the EGR valve
Was any failure found?
Remove foreign substances and clean the
valve.
Replace the EGR valve if it is damaged.
Perform "After-inspection work" of INFOR-
MATION section.
ENGINE (J05E)/TROUBLESHOOTING
1. Set the starter key to the "LOCK" position.
Connect the vehicle to HINO DX Ⅱ .
2.
3. Set the starter key to the "ON" position.
4. Select [Engine] and check if P0404 has been detected.
SHTS021270300461
YES
1. Check if the link joining the actuator and valve unit is disconnected
or damaged due to incursion of foreign substances.
2. Check if there is soot obstructing the exhaust gas passageway
inlet or outlet.
YES
NO
Go to step 2.
NO
Go to step 3.