Nissan Frontier D22. Instruction — part 447
DTC P0405, P0406 EGRT SENSOR
EC-891
[VG33E]
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EC
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.
PROCEDURE FOR DTC P0405
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Verify that engine coolant temperature is less than 50
°C
(122
°F).
If the engine coolant temperature is above the range, cool
the engine down.
4.
Start engine and let it idle for at least 8 seconds.
5.
If 1st trip DTC is detected, go to
EC-894, "Diagnostic Procedure"
.
With GST
●
Follow the procedure “With CONSULT-II”.
PROCEDURE FOR DTC P0406
CAUTION:
Always drive vehicle at a safe speed.
With CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Confirm that EGR valve is not lifting.
If the result is NG, perform trouble diagnosis for DTC P1402. Refer to
3.
Select “DATA MONITOR” mode with CONSULT-II.
4.
Read “EGR TEMP SEN” at about 1,500 rpm while holding the
EGR valve in full open position by hand.
Voltage should decrease to less than 1.5V.
If the result is NG, go to
EC-894, "Diagnostic Procedure"
If the result is OK, go to following step.
5.
Turn ignition switch OFF and wait at least 5 seconds.
6.
Turn ignition switch ON.
7.
Check the output voltage of “THRTL POS SEN” (at closed throt-
tle position) and note it.
8.
Start engine.
9.
Maintain the following conditions for at least 5 consecutive seconds.
10. If 1st trip DTC is detected, go to
EC-894, "Diagnostic Procedure"
.
Overall Function Check
UBS00DKF
Use this procedure to check the overall function of the EGR temperature sensor. During this check, a 1st trip
DTC might not be confirmed.
SEF174Y
ENG SPEED
1,600 - 2,400 rpm (A/T)
1,800 - 2,600 rpm (M/T)
COOLAN TEMP/S
Above 70
°C (158°F)
B/FUEL SCHDL
6 - 9 msec
THRTL POS SEN
X
− (X + 0.82) V
X = Voltage value measured at step 7
Selector lever
Suitable position
SEF201Y
EC-892
[VG33E]
DTC P0405, P0406 EGRT SENSOR
PROCEDURE FOR DTC P0406
With GST
1.
Start engine and warm it up to normal operating temperature.
2.
Confirm that EGR valve is not lifting. If NG, perform trouble diag-
nosis for DTC P1402. Refer to
.
3.
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 1.5V.
4.
EC-894, "Diagnostic Procedure"
If OK, perform trouble diagnoses for DTC P0400 and P1400.
Refer to P0400
SEF360Q
SEF362Q
DTC P0405, P0406 EGRT SENSOR
EC-893
[VG33E]
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Wiring Diagram
UBS00DKG
BBWA0506E
EC-894
[VG33E]
DTC P0405, P0406 EGRT SENSOR
Diagnostic Procedure
UBS00DKH
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 ter-
minal 2 and engine ground. Refer to the 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
EC-895, "Component Inspection"
OK or NG
OK
>> GO TO 5.
NG
>> Replace EGR temperature sensor.
AEC660A
Voltage: Approximately 5V
SEF263W
Continuity should exist.
SEF264W
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