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
NOTE: If DTC P0101 is displayed with other DTC, first perform the trouble diagnosis for other DTC.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test.
2.PERFORM DTC CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at safe speed.
NOTE:
Diagnosis Procedure
1.CHECK INTAKE SYSTEM
Check the following for connection.
2.CHECK GROUND CONNECTION
3.CHECK MASS AIR FLOW (MAF) SENSOR POWER SUPPLY CIRCUIT
4.DETECT MALFUNCTIONING PART
Check the following.
5.CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
6.CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
7.CHECK INTAKE AIR TEMPERATURE SENSOR
Check intake air temperature sensor.
8.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Check EVAP control system pressure sensor.
9.CHECK MAF SENSOR
Check MAF sensor
10.CHECK INTERMITTENT INCIDENT
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.
*: 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
Service data and specifications (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specification
CAUTION:
Use only Genuine NISSAN CVT Fluid
NS-2. Never mix with other fluid.
Using CVT fluid other than Genuine
NISSAN CVT Fluid NS-2 will deteriorate in driveability and CVT durability,
and may damag ...
Power supply and ground circuit
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
1.CHECK FUSES
Check that the following fuses of the AV control unit are not blown.
2.POWER SUPPLY CIRCUIT CHECK
Disconnect AV control unit connectors M152 and M156.
Check voltage between the AV control unit connectors M152
an ...
Hazard switch
Exploded View
Hazard switch
Cluster lid D
Removal and Installation
REMOVAL
Remove cluster lid D. Refer to IP-18, "Removal and Installation".
Disconnect the harness connector from the hazard switch.
Remove the hazard switch.
INSTALLATION
Installation is in the reverse order o ...