Nissan Note [1357/1872] Dtc p0102 p0103 maf sensor

Nissan Note [1357/1872] Dtc p0102 p0103 maf sensor
DTC P0102, P0103 MAF SENSOR
EC-1357
[HR (WITHOUT 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
BBS004M3
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.
TER-
MINAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
32 P
ECM relay
(Self shut-off)
[Engine is running]
[Ignition switch: OFF]
For a few seconds after turning ignition
switch OFF
0-1.0V
[Ignition switch: OFF]
More than a few seconds after turning igni-
tion switch OFF
BATTERY VOLTAGE
(11 - 14V)
45 G Mass air flow sensor
[Ignition switch: ON]
Engine stopped
Approximately 0.4V
[Engine is running]
Warm-up condition
Idle speed
1.0 - 1.3V
[Engine is running]
Warm-up condition
Engine is revving from idle to about 4,000
rpm
1.0 - 1.3 to Approximately 2.4V
(Check for linear voltage rise in
response to engine being
increased to about 4,000 rpm.)
52 LG
Sensor ground
(Mass air flow sensor)
[Engine is running]
Warm-up condition
Idle speed
Approximately 0V
105 G Power supply for ECM [Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)

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