Nissan Qashqai (2007-2010). Manual — part 389
P0011 IVT CONTROL
EC-1075
< COMPONENT DIAGNOSIS >
[MR20DE (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
2.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II
1.
Remove intake valve timing control solenoid valve.
2.
Provide 12V DC between intake valve timing control solenoid
valve terminals 1 and 2, and then interrupt it. Make sure that the
plunger moves as shown in the figure.
CAUTION:
Do not apply 12V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace intake valve timing control solenoid valve.
JMBIA0350ZZ
EC-1076
< COMPONENT DIAGNOSIS >
[MR20DE (WITHOUT EURO-OBD)]
P0102, P0103 MAF SENSOR
P0102, P0103 MAF SENSOR
Description
INFOID:0000000001094098
The mass air flow sensor (1) is placed in the stream of intake air. It
measures the intake flow rate by measuring a part of the entire
intake flow. The mass air flow sensor controls the temperature of the
hot wire to a certain amount. The heat generated by the hot wire is
reduced as the intake air flows around it. The more air, the greater
the heat loss.
Therefore, the electric current supplied to hot wire is changed to
maintain the temperature of the hot wire as air flow increases. The
ECM detects the air flow by means of this current change.
DTC Logic
INFOID:0000000001094099
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 10 seconds before conducting the next test.
Which DTC is detected?
P0102 >> GO TO 2.
P0103 >> GO TO 3.
2.
PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0102
1.
Start engine and wait at least 5 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Go to
EC-1080, "Diagnosis Procedure"
NO
>> INSPECTION END
3.
PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0103-I
1.
Turn ignition switch ON and wait at least 5 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Go to
EC-1080, "Diagnosis Procedure"
NO
>> GO TO 4.
4.
PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0103-II
1.
Start engine and wait at least 5 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Go to
EC-1080, "Diagnosis Procedure"
PBIA9559J
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P0102
Mass air flow sensor
circuit low input
An excessively low voltage from the sensor is sent
to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Intake air leaks
• Mass air flow sensor
P0103
Mass air flow sensor
circuit high input
An excessively high voltage from the sensor is
sent to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Mass air flow sensor
P0102, P0103 MAF SENSOR
EC-1077
< COMPONENT DIAGNOSIS >
[MR20DE (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001094100
1.
INSPECTION START
Confirm the detected DTC.
Which DTC is detected?
P0102 >> GO TO 2.
P0103 >> GO TO 3.
2.
CHECK INTAKE SYSTEM
Check the following for connection.
• Air duct
• Vacuum hoses
• Intake air passage between air duct to intake manifold
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Reconnect the parts.
3.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E21. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace ground connection.
4.
CHECK MAF SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect mass air flow (MAF) sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between MAF sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between MAF sensor harness connector and ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between MAF sensor harness connector and ECM harness connector.
MAF sensor
Ground
Voltage
Connector
Terminal
E18
5
Ground
Battery voltage
MAF sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E18
4
F8
52
Existed
EC-1078
< COMPONENT DIAGNOSIS >
[MR20DE (WITHOUT EURO-OBD)]
P0102, P0103 MAF SENSOR
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK MASS AIR FLOW SENSOR
EC-1081, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace mass air flow sensor.
8.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000001094101
1.
CHECK MASS AIR FLOW SENSOR-I
With CONSULT-III
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Start engine and warm it up to normal operating temperature.
4.
Connect CONSULT-III and select “DATA MONITOR” mode.
5.
Select “MAS A/F SE-B1” and check indication.
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
Without CONSULT-III
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Start engine and warm it up to normal operating temperature.
4.
Check the voltage between ECM harness connector and ground.
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK FOR THE CAUSE OF UNEVEN AIR FLOW THROUGH MASS AIR FLOW SENSOR
MAF sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E18
3
F8
45
Existed
Monitor item
Condition
MAS A/F SE-B1
MAS A/F SE-B1
Ignition switch ON (Engine stopped.)
Approx. 0.4V
Idle (Engine is warmed-up to normal operating temperature.)
0.9 - 1.1V
Idle to about 4,000 rpm
0.9 - 1.1V to Approx. 2.4V*
ECM
Ground
Condition
Voltage
Connector
Terminal
F8
45
(MAF sensor)
Ground
Ignition switch ON (Engine stopped.)
Approx. 0.4V
Idle (Engine is warmed-up to normal operating tempera-
ture.)
0.9 - 1.1V
Idle to about 4,000 rpm
0.9 - 1.1V to Approx. 2.4V*
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