Description
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 greater air flow, 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
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0102
3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0103-I
4.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0103-II
Diagnosis Procedure
Regarding Wiring Diagram information
1.INSPECTION START
Confirm the detected DTC.
2.CHECK INTAKE SYSTEM
Check the following for connection.
3.CHECK GROUND CONNECTION
4.CHECK MAF SENSOR POWER SUPPLY CIRCUIT
5.DETECT MALFUNCTIONING PART
Check the following.
6.CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
7.CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
8.CHECK MASS AIR FLOW SENSOR
9.CHECK INTERMITTENT INCIDENT
Component Inspection
1.CHECK MASS AIR FLOW SENSOR-I
With CONSULT
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
Without CONSULT
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
2.CHECK FOR THE CAUSE OF UNEVEN AIR FLOW VIA THE MASS AIR FLOW SENSOR
Check for the cause of uneven air flow via the mass air flow sensor. Refer to the following.
3.CHECK MASS AIR FLOW SENSOR-II
With CONSULT
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
Without CONSULT
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
4.CHECK MASS AIR FLOW SENSOR-III
With CONSULT
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
Without CONSULT
*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.
Rear-facing child restraint installation using the seat belts
WARNING
The three-point seat belt with Automatic
Locking Retractor (ALR) must be used when
installing a child restraint. Failure to use the
ALR mode will result in the child restraint
not being properly secured. The restraint
could tip over or be loose and cause injury
to a child in a sudden ...
NISSAN Vehicle Immobilizer System keys
You can only drive your vehicle using the Intelligent
Keys which are registered to the NISSAN
Vehicle Immobilizer System components in your
vehicle.
The mechanical key can be used for all the locks.
Never leave the keys in the vehicle.
Additional or replacement keys:
If you still have a key ...
Audio unit
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
...