Hino Motors HINO 155 series Workshop Manual page 423

5
Inspect the boost pressure sensor power supply
E
VC
Do the measurements meet the standard value?
Go to step 6.
6 Check the DTC detected (Engine ECU)
Has DTC P0237 been detected?
Replace the engine ECU.
Perform "After-inspection work" of INFOR-
MATION section.
ENGINE (J05E)/TROUBLESHOOTING
1. Connect the engine ECU vehicle side harness to the engine ECU.
2. Set the starter key to the "ON" position.
3. Use the electrical tester to measure the voltage between the termi-
nals of the boost pressure sensor vehicle side connector.
Starter key: ON
SHTS021270300346
YES
Perform engine warm up. (engine coolant temperature: 80 C {176
1.
F} or more)
2. Stop the engine.
3. Set the starter key to the "ON" position.
4. Select [Engine] and check if P0237 has been detected.
SHTS021270300347
YES
Measurement Tester
conditions connections
Boost pressure
sensor vehicle
side connector
VC – E
Replace the engine ECU.
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.
2–387
Standard values
4.75 – 5.25 V
NO
NO