P0045: Dc Motor Terminal Open Circuit Or Dc Motor Coil Open Circuit; Dtc: P0045 - Hino Motors HINO 155 series Workshop Manual

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DTC: P0045

P0045: DC motor terminal open circuit or DC motor coil open circuit

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 target 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.
<Description of malfunction>
• –
2. DTC set condition
(1) DTC detection condition
• Starter key "ON".
• DTC P259F detected.
• Battery voltage is in the range of 10 V 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
When 1st, 2nd and 3rd conditions simultaneously form in the following matrix:
Motor terminal or
coil disconnection
Condition of motor
ENGINE (J05E)/TROUBLESHOOTING
Power
supply block
Micro
CAN I/F
computer
block
EEPROM
Terminal U Output Batt. Voltage
≤ 1 V (Condition (a))
Terminal V
≤ 1 V (Condition (b))
Terminal W
(a) or (b)
open circuit
LEA
Moter driver I/F block
High side
Low side FET
Over current
protection block
P/S (U, V, and W)
Position sensor
P/S (U+, V+, and W+)
I/F block
Details (Reference)
1st 2nd
≤ 1 V (Condition (c))
Output Batt. Voltage
≤ 1 V (Condition (d))
(c) or (d)
EN01H02127030602016028
DC Brushless
motor
MOTOR (U)
MOTOR (V)
MOTOR (W)
Position sensor
(Hall IC)
P/S (POWER)
P/S (GND)
SHTS021270300116
3rd
≤ 1 V (Condition (e))
≤ 1 V (Condition (f))
Output Batt. Voltage
(e) or (f)