ENGINE (J05E)/TROUBLESHOOTING
2–800
DTC: P14BC and P14BD
EN01H02127030602016134
P14BC: EGR valve controller temperature sensor 2 (Signal too low)
(EGR actuator temp. sensor 2 signal too low)
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 engine coolant temperature is low (
≤
40
C {104
F})
•
DTC is issued when failure message is received from EGR actuator unit.
<Description of malfunction>
•
EGR actuator system is malfunctioning.
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
•
When temperature of temperature sensor 2 (CPU side) inside actuator is -50
C {-58
F} or less, and this con-
dition continues for 2 second.
3.
Reset condition
•
Normal operation is restored and accelerator is not being operated.
YM5
YM6
(CAN+)
(CAN-)
NF
A
NFB
(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
Engine ECU
Resistor
SHTS021270300723
