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
Front door finisher
Exploded View
Mirror cover
Front door finisher
Step lamp
Arm rest finisher
Main power window and door lock/ unlock switch finisher
Front door grip cover
Seat memory switch (if equipped)
Inside release handle escutcheon
Inside release handle
Flat head screws
&nbs ...
Parking brake switch signal circuit
Description
Transmits the parking brake switch signal to the
combination meter.
Component Function Check
1.COMBINATION METER INPUT SIGNAL
Select "METER/M&A" on CONSULT.
Monitor "PKB SW" of "DATA MONITOR" while
applying and releasing the parking brake.
> ...
Signal buffer system
System Diagram
System Description
IPDM E/R reads the status of the oil pressure switch and transmits the
oil pressure switch signal to BCM via
CAN communication.
IPDM E/R receives the rear window defogger status signal from BCM
via CAN communication and transmits
it to ECM via ...