P003A: Initialization Failure (Vnt Actuator Initialize Error); Dtc: P003A - Hino Motors HINO 155 series Workshop Manual

DTC: P003A

P003A: Initialization failure (VNT actuator initialize error)

INFORMATION
POWER
(12V)
GND
CAN-H
CAN-L
Target position
information and
diagnosis result data
communication
terminal
1. Technical description
• The VNT actuator moves the nozzle vane steplessly by the LEA (Linear Electric Actuator) to control the turbo speed
and boost pressure.
• The LEA has a sensor to detect the movement of the actuator, always monitoring the reading and actual value of
the nozzle vane opening.
• 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.
2. DTC set condition
(1) DTC detection condition
• Starter key "ON".
• The battery voltage is in the range of 10 to 16 V.
• The engine is stopped, or the engine speed remains at 500 r/min or more for 5 seconds or more.
(2) Judgement criteria
Item
1. Initialization failure
3. Reset condition
• After normal operation is restored and the starter key is turned "LOCK".
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
• Engine output is restricted.
ENGINE (J05E)/TROUBLESHOOTING
Power
supply block
Micro
CAN I/F
computer
block
EEPROM
When the amount of operation after power has been turned ON is larger than HI
range, or when the Hall IC output does not become constant after 5 seconds
has elapsed
LEA
Moter driver I/F block
High side
Low side FET
Over current
protection block
P/S (POWER)
P/S (U, V, and W)
Position sensor
P/S (U+, V+, and W+)
I/F block
P/S (GND)
Details (Reference)
2–121
EN01H02127030602016027
DC Brushless
motor
MOTOR (U)
MOTOR (V)
MOTOR (W)
Position sensor
(Hall IC)
SHTS021270300111