2006 NISSAN VERSA Workshop Service Repair Manual

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NISSAN VERSA 2006 Workshop Service Repair Manual EC-184Revision: June 2006
DTC P0101 MAF SENSOR
2007 Versa
5. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E8, F8
Harness for open or short between mass air flow sensor and IPDM

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NISSAN VERSA 2006 Workshop Service Repair Manual DTC P0101 MAF SENSOR
EC-185
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Revision: June 20062007 Versa
11 . CHECK INTERMITTENT INCIDENT
Perform EC-143, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END

DTC P0101 MAF SENSOR
EC-185
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11 . CHECK INTERMITTENT INCIDENT
Perform EC-143, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionUBS00QD8
MASS AIR FLOW SENSOR
With CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Connect CONSULT-II and select “DATA MONITOR” mode.
4. Select “MAS A/F SE-B1” and check indication under the follow-
ing conditions.
*: Check for linear voltage rise in response to engine being increased to about
4,000 rpm.
5. If the voltage is out of specification, proceed the following.
a. Check for the cause of uneven air flow through mass air flow sensor. Refer to following.
Crushed air ducts
Malfunctioning seal of air cleaner element
Uneven dirt of air cleaner element
Improper specification of intake air system parts
b. If NG, repair or replace malfunctioning part and perform step 2 to 4 again.
If OK, go to next step.
6. Turn ignition switch OFF.
7. Disconnect mass air flow sensor harness connector and reconnect it again.
8. Perform step 2 to 4 again.
9. If NG, clean or replace mass air flow sensor.
Without CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 45 (Mass air flow sensor
signal) and ground.
*: Check for linear voltage rise in response to engine being increased to about
4,000 rpm.
4. If the voltage is out of specification, proceed the following.
Condition MAS A/F SE-B1 (V)
Ignition switch ON (Engine stopped.) Approx 0.4
Idle (Engine is warmed-up to normal
operating temperature.)0.8 - 1.1
2,500 rpm (Engine is warmed-up to
normal operating temperature.)1.4 - 1.7
Idle to about 4,000 rpm 0.8 - 1.1 to 2.4*
PBIB2371E
Condition Voltage V
Ignition switch ON (Engine stopped.) Approx 0.4
Idle (Engine is warmed-up to normal
operating temperature.)0.8 - 1.1
2,500 rpm (Engine is warmed-up to
normal operating temperature.)1.4 - 1.7
Idle to about 4,000 rpm 0.8 - 1.1 to 2.4*
PBIA9564J

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NISSAN VERSA 2006 Workshop Service Repair Manual EC-186Revision: June 2006
DTC P0101 MAF SENSOR
2007 Versa
a. Check for the cause of uneven air flow through mass air flow sensor. Refer to following.
Crushed air ducts
Malfunctioning seal of air cle

Page 1356 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-187
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Revision: June 20062007 Versa
DTC P0102, P0103 MAF SENSORPFP:22680
Component DescriptionUBS00QDA
The mass air flow sensor (1) is placed in

DTC P0102, P0103 MAF SENSOR
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DTC P0102, P0103 MAF SENSORPFP:22680
Component DescriptionUBS00QDA
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 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 ModeUBS00QDB
Specification data are reference values.
On Board Diagnosis LogicUBS00QDC
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 MIL lights up.
PBIA9559J
MONITOR ITEM CONDITION SPECIFICATION
MAS A/F SE-B1 See EC-133, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
CAL/LD VALUE
Engine: After warming up
Shift lever: P or N (A/T, CVT),
Neutral (M/T)
Air conditioner switch: OFF
No loadIdle 10% - 35%
2,500 rpm 10% - 35%
MASS AIRFLOW
Engine: After warming up
Shift lever: P or N (A/T, CVT),
Neutral (M/T)
Air conditioner switch: OFF
No loadIdle 1.0 - 4.0 g·m/s
2,500 rpm 4.0 - 10.0 g·m/s
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P0102
0102Mass air flow sensor
circuit low inputAn excessively low voltage from the sensor is
sent to ECM.
Harness or connectors
(Mass air flow sensor circuit is open or
shorted.)
Intake air leaks
Mass air flow sensor
P0103
0103Mass air flow sensor
circuit high inputAn excessively high voltage from the sensor is
sent to ECM.
Harness or connectors
(Mass air flow 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.

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NISSAN VERSA 2006 Workshop Service Repair Manual EC-188Revision: June 2006
DTC P0102, P0103 MAF SENSOR
2007 Versa
DTC Confirmation ProcedureUBS00QDD
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF a

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NISSAN VERSA 2006 Workshop Service Repair Manual DTC P0102, P0103 MAF SENSOR
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Revision: June 20062007 Versa
Wiring DiagramUBS00QDE
BBWA2632E

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NISSAN VERSA 2006 Workshop Service Repair Manual EC-190Revision: June 2006
DTC P0102, P0103 MAF SENSOR
2007 Versa
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals whe

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NISSAN VERSA 2006 Workshop Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-191
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Revision: June 20062007 Versa
3. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body.
Re

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