Inspection Procedure: P0489 And P0490 - Hino Motors HINO 155 series Workshop Manual

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INSPECTION PROCEDURE: P0489 and P0490

1
Check the DTC detected 1 (Engine ECU)
Has a DTC other than DTC of this inspection been detected?
Go to diagnosis procedure of a related DTC.
2
Inspect the EGR valve connector
Was any failure found?
Connect securely, repair if needed.
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 any DTC other than DTC of this
inspection has been detected.
SHTS021270300493
YES
1. Check the connection of the EGR valve connector (looseness and
poor contact).
YES
NO
Go to step 2.
NO
Go to step 3.