Nissan Frontier D22. Instruction — part 298
DTC P0405, P0406 EGRT SENSOR
EC-295
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Overall Function Check
UBS00D6Z
Use this procedure to check the overall function of the EGR temperature sensor. During this check, a 1st trip
DTC might not be confirmed.
PROCEDURE FOR MALFUNCTION B
With GST
1.
Start engine and warm it up to normal operating temperature.
2.
Run engine at idle for at least 2 minutes.
3.
Confirm that EGR valve is not lifting.
If NG, perform trouble diagnosis for DTC P1402.
Refer to
4.
Check voltage between ECM terminal 63 (EGR temperature
sensor signal) and ground at about 1,500 rpm with EGR valve
lifted up to the full position by hand.
Voltage should decrease to less than 1.0V.
5.
If NG, go to
EC-297, "Diagnostic Procedure"
If OK, perform trouble diagnoses for DTC P0400 and P1400.
Refer to
SEF360Q
SEF362Q
EC-296
[KA24DE]
DTC P0405, P0406 EGRT SENSOR
Wiring Diagram
UBS00D70
AEC006B
DTC P0405, P0406 EGRT SENSOR
EC-297
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Diagnostic Procedure
UBS00D71
1.
CHECK POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect EGR temperature sensor harness connector.
3.
Turn ignition switch ON.
4.
Check voltage between terminal 1 and ground with CONSULT-II
or tester.
OK or NG
OK
>> GO TO 2.
NG
>> Repair harness or connectors.
2.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check harness continuity between EGR temperature sensor terminal 2 and engine ground.
Refer to Wiring Diagram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the harness for open or short between EGR temperature sensor and ECM.
>> Repair open circuit or short to ground or short to power in harness or connector.
4.
CHECK EGR TEMPERATURE SENSOR
Refer to
EC-298, "Component Inspection"
OK or NG
OK
>> GO TO 5.
NG
>> Replace EGR temperature sensor.
SEF345V
Voltage
: Approximately 5V
SEF263W
Continuity should exist.
EC-298
[KA24DE]
DTC P0405, P0406 EGRT SENSOR
5.
CHECK INTERMITTENT INCIDENT
EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
Component Inspection
UBS00D72
EGR TEMPERATURE SENSOR
Check resistance change and resistance value.
<Reference data>
Removal and Installation
UBS00D73
EGR TEMPERATURE SENSOR
EM-13, "OUTER COMPONENT PARTS"
SEF643Q
EGR temperature
°C (°F)
Voltage [V]
Resistance M
Ω
0 (32)
4.56
0.62 - 1.05
50 (122)
2.25
0.065 - 0.094
100 (212)
0.59
0.011 - 0.015
SEF068XB
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