HINO J05E Engine 2018 P0045 Trouble Code Solution

Here is the troubleshooting guide on how to solve HINO J05E engine 2018 P0045 DC Motor Terminal Open Circuit or DC Motor Coil Open Circuit.

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Technical Description:

1) The VNT actuator moves the nozzle vane steplessly by the LEA(Linear Electric Actuator) to control the turbo speed and boost pressure.

2) The LEA has a sensor to detect the movement of the actuator, always monitoring the target and actual value of the nozzle vane opening.

3) Wiping operation is performed while the engine is stopped for the purpose of removing soot and oil coming out from the range of vane operation and checking the turbo mechanical operating range for abnormality.

Description of Malfunction:

1) None

DTC Set Condition:

1) DTC Detection Condition:

a) Starter key “ON”.
b) DTC P259F detected.
c) Battery voltage is in the range of 10 to 16 V
d) The engine is stopped, or the engine speed remains at 500 r/min or more for 5 seconds or more.

2) Judgement Criteria:

a) Motor terminal or coil disconnection

Reset Condition:

1) After restoration to normal condition and starter key “LOCK” Indication, Warning or System Control Regulation When The DTC Is Set:

1) MIL: ON

2) SVS light: OFF

3) Engine output is restricted.

Symptoms On The Vehicle The DTC Is Set:

1) Symptoms On The Vehicle Due To Backup Control (Fail Safe Function):

a) Engine output is insufficient.

2) Symptoms On The Vehicle Due To Malfunction:

a) None

Pre-Inspection Work:

1) Check that the battery voltage is in the normal range.

After-Inspection Work:

1) Clear all past DTCs.

2) Check that no DTC is detected after test drive.

Possible Causes:

1) Faulty contact in VNT controller connector

2) LEA internal disconnection

3) Controller internal disconnection

More case for HINO please refer to:HINO Trouble Repair

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