ENGINE (J05E)/TROUBLESHOOTING
2–121
DTC: P003A
EN01H02127030602016027
P003A: Initialization failure (VNT actuator initialize error)
INFORMATION
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
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.
Item
Details (Reference)
1. Initialization failure
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
POWER
(12V)
Power
supply block
CAN I/F
block
EEPROM
Micro
computer
LEA
Moter driver I/F block
High side
Low side FET
GND
CAN-H
CAN-L
Target position
information and
diagnosis result data
communication
terminal
MOTOR (U)
P/S (POWER)
DC Brushless
motor
Position sensor
(Hall IC)
P/S (GND)
P/S (U, V, and W)
P/S (U+, V+, and W+)
Over current
protection block
Position sensor
I/F block
MOTOR (V)
MOTOR (W)
SHTS021270300111