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DTC P0101 MAF SENSOR
EC-963
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P0101 MAF SENSOR PFP:22680
Component Description EBS011OD
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. 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 more air, 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.
CONSULT-II Reference Value in Data Monitor Mode EBS011OE
Specification data are reference values.
ECM Terminals and Reference Value EBS011OF
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.
On Board Diagnosis Logic EBS011OG
PBIB1604E
MONITOR ITEM CONDITION SPECIFICATION
MAS AIR/FL SE*
● Engine: After warming up
● Air conditioner switch: OFF
● Shift lever: Neutral position
● No-load
Idle 1.5 - 2.0V
2,000 rpm 2.2 - 2.7V
TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION
DATA
(DC Voltage)
54 W Mass air flow sensor
[Engine is running]
● Warm-up condition
● Idle speed
1.8 - 2.3V
[Engine is running]
● Warm-up condition
● Engine speed is 2,000 rpm
2.5 - 3.0V
67 —
Sensor ground
(Sensors shield circuit)
[Ignition switch ON] Approximately 0.3V
73 B
Mass air flow sensor
ground
[Ignition switch ON] Approximately 0.3V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0101
0101
Mass air flow sensor cir-
cuit range/performance
problem
Improper voltage from the sensor is sent to
ECM compared with the driving condition.
● Harness or connectors
(The sensor circuit is open or
shorted.)
● Mass air flow sensor
● Intake air leaks
● Air cleaner
● Intake air temperature sensor
● Turbocharger boost sensor
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