Nissan Note [1724/1872] Dtc p0100 maf sensor

Nissan Note [1724/1872] Dtc p0100 maf sensor
EC-1724
[K9K]
DTC P0100 MAF SENSOR
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
BBS0042M
1. CHECK AIR FILTER
Check that air filter is not obsstructed.
Yes or No
Yes >> Repair.
No >> GO TO 2.
2. CHECK INTAKE AIR DUCT
Check that intake air duct is not obsstructed.
Yes or No
Yes >> Repair.
No >> GO TO 3.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION
DATA
(DC Voltage)
50 L
Sensor power supply
(Mass air flow sensor)
[Ignition switch: ON] Approximately 5.0V
60 Y Mass air flow sensor
[Ignition switch: ON] Approximately 0.36V
[Engine is running]
Warm-up condition
Idle speed
Approximately 1.7V
[Engine is running]
Warm-up condition
Engine speed: 2,500 rpm.
Approximately 2.2V
70 G
Mass air flow sensor
ground
[Engine is running]
Warm-up condition
Idle speed
Approximately 0.3V
104 P ECM relay (self-shutoff)
[Ignition switch ON]
[Ignition switch OFF]
For a few seconds after turning ignition
switch OFF
Approximately 1.4V
[Ignition switch OFF]
More than a few seconds after turning igni-
tion switch OFF
BATTERY VOLTAGE
(11 - 14V)
109
110
G
G
Power supply for ECM [Ignition switch ON]
BATTERY VOLTAGE
(11 - 14V)

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