Nissan Qashqai J11. Manual — part 420
ECK-240
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR
P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR
DTC Logic
INFOID:0000000010289827
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECK-240, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010289828
1.
CHECK LOW PRESSURE EGR VALVE AND HIGH PRESSURE EGR VALVE
Visually check low pressure EGR valve and high pressure EGR valve for chipping.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK ECM HARNESS CONNECTOR CONNECTIONS
Check ECM harness connector connection.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK LOW PRESSURE EGR VALVE AND HIGH PRESSURE EGR VALVE HARNESS CONNECTOR
CONNECTIONS
Check low pressure EGR valve and high pressure EGR valve harness connector connection.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK LOW PRESSURE EGR VALVE AND HIGH PRESSURE EGR VALVE POSITION SENSOR CIR-
CUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0409
EGR VALVE POSITION SEN CIRC
(Exhaust gas recirculation sensor
“A” circuit)
• 1.DEF: SIGNAL INCOHERENCE
• A Voltage of EGR position sensor
remains more than 4.8 V.
• A Voltage of EGR position sensor
remains less than 0.35 V.
• Harness or connectors
(High pressure EGR volume control valve
position sensor circuit is open or shorted.)
(Low pressure EGR volume control valve
position sensor circuit is open or shorted.)
• High pressure EGR volume control valve
position sensor
• Low pressure EGR volume control valve
position sensor
• ECM
P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR
ECK-241
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
ECK
N
P
O
2.
Check low pressure EGR valve and high pressure EGR valve position sensor circuit for open and short.
HIGH PRESSURE EGR VOLUME CONTROL VALVE
LOW PRESSURE EGR VOLUME CONTROL VALVE
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
DTC CONFIRMATION PROCEDURE
1.
Erase DTC.
2.
Perform DTC confirmation procedure again. Refer to
Is the DTC P0409 displayed again?
YES
>> GO TO 6.
NO
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
6.
CHECK LOW PRESSURE EGR VALVE MOTOR AND HIGH PRESSURE EGR VALVE MOTOR
ECK-241, "Component Inspection (EGR Volume Control Valve Motor)"
Is the inspection result normal?
YES
>> Replace high pressure EGR valve position sensor and low pressure EGR valve position sensor.
NO
>> Replace error-detected parts.
Component Inspection (EGR Volume Control Valve Motor)
INFOID:0000000010289829
1.
CHECK LOW PRESSURE EGR VALVE MOTOR AND HIGH PRESSURE EGR VALVE MOTOR
1.
Turn ignition switch OFF.
2.
Disconnect low pressure EGR valve and high pressure EGR valve harness connector.
3.
Check resistance between low pressure EGR valve and high pressure EGR valve terminals as follows.
HIGH PRESSURE EGR VOLUME CONTROL VALVE
+
-
Continuity
ECM
High pressure EGR volume
control valve
Connector
Terminal
Connector
Terminal
F80
69
F60
6
Existed
70
3
75
1
+
-
Continuity
ECM
Low pressure EGR volume
control valve
Connector
Terminal
Connector
Terminal
F80
65
F34
1
Existed
66
2
79
3
High pressure EGR volume
control valve
Condition
Resistance (Approx.)
+
-
Terminal
2
5
Temperature
°
C (
°
F)
23 (73)
2.4
Ω
ECK-242
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
P0409 EGR VOLUME CONTROL VALVE POSITION SENSOR
LOW PRESSURE EGR VOLUME CONTROL VALVE
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace low pressure EGR valve or high pressure EGR valve.
Low pressure EGR volume
control valve
Condition
Resistance (Approx.)
+
-
Terminal
5
6
Temperature
°
C (
°
F)
20 (68)
1.69
Ω
P0470 EXHAUST GAS PRESSURE SENSOR
ECK-243
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
ECK
N
P
O
P0470 EXHAUST GAS PRESSURE SENSOR
DTC Logic
INFOID:0000000010289830
DTC DETECTION LOGIC
NOTE:
If DTC P0470 is displayed with DTC P0651, and P2263, perform the trouble diagnosis for DTC P0651,
and P2263. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECK-243, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010289831
1.
CHECK ECM HARNESS CONNECTOR CONNECTIONS
1.
Turn ignition switch OFF.
2.
Check ECM harness connector connection F80.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK EXHAUST GAS PRESSURE SENSOR 1 HARNESS CONNECTOR CONNECTIONS
Check exhaust gas pressure sensor harness connector connection F110.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK EXHAUST GAS PRESSURE SENSOR 1 POWER SUPPLY CIRCUIT
Check the power supply of the exhaust gas pressure sensor 1.
Is the inspection result normal?
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0470
TBN UPSTR PRS SEN CIRC
(Exhaust pressure sensor “A” circuit)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH
• An excessively low voltage from the sensor is
sent to ECM.
• An excessively high voltage from the sensor
is sent to ECM.
• Exhaust gas pressure sensor
1
• Turbocharger
• Exhaust manifold
• Exhaust tube
• ECM
+
-
Continuity
Exhaust gas pressure sensor 1
Connector
Terminal
F110
3
Ground
Existed
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