Nissan Almera Tino V10. Manual — part 338
EC-178
[QG (WITH EURO-OBD)]
DTC P0102, P0103 MAF SENSOR
DTC P0102, P0103 MAF SENSOR
PFP:22680
Component Description
EBS00QIN
The mass air flow sensor is placed in the stream of intake air. It mea-
sures the intake flow rate by measuring a part of the entire intake
flow. It consists of a hot film that is supplied with electric current from
the ECM. The temperature of the hot film is controlled by the ECM a
certain amount. The heat generated by the hot film is reduced as the
intake air flows around it. The more air, the greater the heat loss.
Therefore, the ECM must supply more electric current to maintain
the temperature of the hot film as air flow increases. The ECM
detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor Mode
EBS00QIO
Specification data are reference values.
On Board Diagnosis Logic
EBS00QIP
These self-diagnoses have the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
SEC266C
MONITOR ITEM
CONDITION
SPECIFICATION
MAS A/F SE-B1
●
Engine: After warming up
●
Air conditioner switch: OFF
●
Shift lever:
N (A/T models)
Neutral (M/T models)
●
No-load
Idle
Approx. 1.0 - 1.7V
2,500 rpm
Approx. 1.5 - 2.1V
CAL/LD VALUE
●
Engine: After warming up
●
Shift lever:
N (A/T models)
Neutral (M/T models)
●
Air conditioner switch: OFF
●
No-load
Idle
10% - 35%
2,500 rpm
10% - 35%
MASS AIRFLOW
●
Engine: After warming up
●
Shift lever:
N (A/T models)
Neutral (M/T models)
●
Air conditioner switch: OFF
●
No-load
Idle
1.0 - 4.0 g·m/s
2,500 rpm
5.0 - 10.0 g·m/s
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0102
0102
Mass air flow sensor circuit
low input
An excessively low voltage from the sensor
is sent to ECM when engine is running.
●
Harness or connectors
(The sensor circuit is open or shorted.)
●
Intake air leaks
●
Mass air flow sensor
P0103
0103
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
Detected items
Engine operating condition in fail-safe mode
Mass air flow sensor circuit
Engine speed will not rise more than 2,400 rpm due to the fuel cut.
DTC P0102, P0103 MAF SENSOR
EC-179
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC Confirmation Procedure
EBS00QIQ
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR DTC P0102
With CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and wait at least 5 seconds.
4.
If DTC is detected, go to
EC-181, "Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
PROCEDURE FOR DTC P0103
With CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Wait at least 5 seconds.
4.
If DTC is detected, go to
EC-181, "Diagnostic Procedure"
.
If DTC is not detected, go to next step.
5.
Start engine and wait at least 5 seconds.
6.
If DTC is detected, go to
EC-181, "Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
SEF058Y
SEF058Y
EC-180
[QG (WITH EURO-OBD)]
DTC P0102, P0103 MAF SENSOR
Wiring Diagram
EBS00QIR
YEC440A
DTC P0102, P0103 MAF SENSOR
EC-181
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
EBS00QIS
1.
INSPECTION START
Which malfunction (P0102 or P0103) is duplicated?
P0102 or P0103
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
OK or NG
OK
>> GO TO 3.
NG
>> Reconnect the parts.
3.
RETIGHTEN GROUND SCREWS
1.
Turn ignition switch “OFF”.
2.
Loosen and retighten engine ground screws.
>> GO TO 4.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
45
R
Sensor power supply
(Mass air flow sensor)
[Ignition switch “ON”]
Approximately 5V
50
Y
Mass air flow sensor
[Engine is running]
●
Warm-up condition
●
Idle speed
1.0 - 1.7V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,500 rpm.
1.5 - 2.1V
67
B
Sensor ground
(Mass air flow sensor)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
MBIB0095E
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