Check The Dtc Detected 2 (Engine Ecu) - Hino Motors HINO 155 series Workshop Manual

3
Inspect the EGR valve power supply
+B
Do the measurements meet the standard value?
Replace the EGR valve, and go to step 4.
4

Check the DTC detected 2 (Engine ECU)

Has DTC (P0489 or P0490) been detected?
Replace the engine ECU.
Perform "After-inspection work" of INFOR-
MATION section.
ENGINE (J05E)/TROUBLESHOOTING
1. Set the starter key to the "LOCK" position.
2. Disconnect the EGR valve connector.
E
3. Set the starter key to the "ON" position.
4. Use the electrical tester to measure the voltage between the termi-
nals of the EGR valve vehicle side connector.
SHTS021270300494
Starter key: ON
YES
1. Set the starter key to the "ON" position.
2. Select [Engine] and check if the DTC (P0489 or P0490) has been
detected.
SHTS021270300495
YES
Measurement Tester
conditions connections
EGR valve vehicle
side connector
+B – E
Check the wire harness (actuator power sup-
ply and ground) and battery voltage.
Repair or replace parts as needed.
Perform "After-inspection work" of INFOR-
MATION section.
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.
2–539
Standard values
10 – 16 V
NO
NO