ENGINE (J05E)/TROUBLESHOOTING
2–501
P0406: Valve position sensor magnet lost (EGR actuator position sensor signal too high)
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 is turned "ON".
•
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
•
The condition that the magnetic flux of the position sensor is less than 35kA/m remains for 1 second or more.
3.
Reset condition
•
After normal status is resumed and accelerator opening is fully closed.
4.
Indication, warning or system control regulation when the DTC is set.
•
MIL: ON
•
SVS light: OFF
•
Fuel injection limit
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
SHTS021270300465