ENGINE (J05E)/TROUBLESHOOTING2–538
INSPECTION PROCEDURE: P0489 and P0490
1. Set the starter key to the "LOCK" position.
2. Connect the vehicle to HINO DX Ⅱ .
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.
1. Check the connection of the EGR valve connector (looseness and
poor contact).
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. Go to step 2.
2
Inspect the EGR valve connector
Was any failure found?
Connect securely, repair if needed.
Perform "After-inspection work" of INFOR-
MATION section.
Go to step 3.
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