Hino Motors HINO 195 series User Manual

ENGINE (J05E)/TROUBLESHOOTING 2–483
DTC: P0402
EN01H02127030602016075
P0402: EGR high flow
INFORMATION
1. Technical description
• EGR valve is a butterfly type.
• EGR valve opening is controlled by engine speed and amount of intake air.
• EGR valve opening is adjusted by engine ECU and CAN communication.
• EGR valve will not operate when coolant temperature is low (≤ 40 C {104 F}).
• Engine ECU calculates the actual EGR rate based on information from the boost pressure sensor, engine speed
sensor, intake manifold temperature sensor, and air flow sensor.
• Engine ECU compares the actual EGR rate and the theoretical EGR rate stored in the ECU memory.
<Description of malfunction>
• EGR rate may be over-applied.
E7Q
(E2)
E7P
(THG)
(THIA)
XZJ
10mA 10mA
YM5 YM6
(CAN+) (CAN-)
NFA NFA
(CANH) (CANL)
Y4K
Y4J
(GND)
#XG #XV
(CANH) (CANL)
Z90
Y2E
Z90
$4
Y4J
X36
(E)
(+B) (+B)
X36
(L)
Y2E
NAT
Actuator power
relay
EGR
actuator
VNT
controller
Resistor
Intake air
temperature sensor
(air flow sensor built in)
$XW
(PC2S)
(E1)
X85
XZG
Z70
$XV
(PCR1)
(VC1)
(E2)
(PCR2)
(VC2)
(E) (THW)
Z72
XZH
(VC2) (PCR2) (E2) (VC) (PCR1) (E1) (PC1S)
XG2
Z6R
EBJ EBH EBN EBM EBL EBK
J0L
XCV X71 XCT Z65
J0M
(VC)
(PIM)
(E)
(FC)
(E2G)
(+B)
(E2)
X72
(THA)
X4K
(VG)
ZJP
(E4)
X0G
(PIM)
Z5G X66
ZJQ
(E5)
X28
(THW) (EVG)
XMH
(VAF)
X2U
(THA)
X8210mA
10mA
10mA
15mA 5mA
10mA 200mA 200mA
15mA 15mA 2mA 2mA
10mA
15mA 15mA
15mA
Common rail
pressure sensor
Boost pressure
sensor
Intake manifold
temperature
sensor
Engine ECU
Coolant temperature
sensor
Body earth
SHTS021270300452

Hino Motors HINO 195 series Specifications

General

Brand	Hino Motors
Model	HINO 195 series
Category	Trucks
Language	English