ENGINE (J05E)/TROUBLESHOOTING
2–553
DTC: P04DA
EN01H02127030602016086
P04DA: EGR feedback failure
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.
2.
DTC set condition
(1)
DTC detection condition
•
Starter key "ON".
•
DPR auto-regeneration is inactive.
•
Engine coolant temperature is 30
C {86
F} or more.
•
Engine speed of 500 r/min or more.
•
Exhaust brake is not actuated.
•
EGR valve opening is more than 0 %.
•
Atmospheric pressure is 75 kPa or more.
(2)
Judgement criteria
•
The threshold value of EGR feedback amount continues for 30 seconds or more.
E7Q
(E2)
E7P
(THG)
(THIA)
XZJ
10mA
10mA
YM5
YM6
(CAN+)
(CAN-)
NF
A
NF
A
(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
(V
G)
ZJP
(E4)
X0G
(PIM)
Z5G
X66
ZJQ
(E5)
X28
(THW)
(EV
G)
XMH
(V
AF)
X2U
(THA)
X82
10mA
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 temper
ature
sensor
Body earth
SHTS021270300507