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.
Servicing air conditioner
The air conditioner system in your NISSAN vehicle
is charged with a refrigerant designed with
the environment in mind.
This refrigerant does not harm the earth's
ozone layer.
Special charging equipment and lubricant is required
when servicing your NISSAN air conditioner.
Using improper refr ...
Wiring diagram
SRS AIR BAG CONTROL SYSTEM
Wiring Diagram - For Mexico
Wiring Diagram - Except Mexico
...
Wind deflector
Removal and Installation
REMOVAL
Open the glass lid.
Remove the side screw (A) to release the wind deflector side
arms (1). : Front
Disconnect and release the inner blind (1) slide clip from wind
deflector.
: Front
Remove the front screws (A), then remove wind deflector ...