Nissan Primera P12. Instruction — part 230
DTC P0101 MAF SENSOR
EC-105
[YD (WITH EURO-OBD)]
C
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A
EC
Wiring Diagram
EBS013KZ
MBWA0644E
EC-106
[YD (WITH EURO-OBD)]
DTC P0101 MAF SENSOR
Diagnostic Procedure
EBS013L0
1.
CHECK INTAKE SYSTEM
1.
Check air cleaner for clogging.
2.
Check the following for connection and cracks.
–
Air duct
–
Vacuum hoses
–
Intake air passage between air duct and intake manifold
OK or NG
OK
>> GO TO 2.
NG
>> Reconnect or repair the parts.
2.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten engine ground screws. Refer to
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace ground connections.
3.
CHECK MAFS POWER SUPPLY CIRCUIT
1.
Disconnect mass air flow sensor harness connector.
2.
Turn ignition switch ON.
3.
Check voltage between mass air flow sensor terminal 5 and
ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
MBIB0915E
MBIB0636E
Voltage: Battery voltage
MBIB0988E
DTC P0101 MAF SENSOR
EC-107
[YD (WITH EURO-OBD)]
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EC
4.
CHECK MAFS GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between mass air flow sensor terminal 4 and ECM terminal 73.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK MAFS INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between mass air flow sensor terminal 3 and ECM terminal 54. Refer to Wiring
Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
Continuity should exist.
Continuity should exist.
EC-108
[YD (WITH EURO-OBD)]
DTC P0101 MAF SENSOR
6.
CHECK EGR VOLUME CONTROL VALVE FUNCTION
With CONSULT-II
1.
Reconnect all harness connectors disconnected.
2.
Remove EGR volume control valve from cylinder head.
3.
Turn ignition switch ON.
4.
Perform “EGR VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Check that EGR volume control
valve shaft moves smoothly forward and backward according to the valve opening.
NOTE:
When installing the EGR volume control valve, make sure that the shaft is in the same position before
checking.
Without CONSULT-II
1.
Reconnect all harness connectors disconnected.
2.
Remove EGR volume control valve from cylinder head.
3.
Turn ignition switch ON and OFF.
4.
Check that EGR volume control valve shaft moves smoothly for-
ward and backward according to the ignition switch position.
NOTE:
When installing the EGR volume control valve, make sure that
the shaft is in the same position before checking.
OK or NG
OK
>> GO TO 7.
NG
>> Check EGR volume control valve and its circuit. Refer to
EC-213, "Diagnostic Procedure"
.
7.
CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to
EC-118, "Component Inspection"
.
OK or NG
OK
>> GO TO 8.
NG
>> Replace mass sir flow sensor (with intake air temperature sensor).
8.
CHECK TURBOCHARGER BOOST SENSOR
Refer to
EC-181, "Component Inspection"
.
OK or NG
OK
>> GO TO 9.
NG
>> Replace turbocharger boost sensor.
SEF819Y
SEF560W
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