Nissan Qashqai (2007-2010). Manual — part 454

P0101 MAF SENSOR

EC-1335

< COMPONENT DIAGNOSIS >

[K9K]

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EC

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Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness for open or short between IPDM E/R and mass air flow sensor
• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK MASS AIR FLOW SENSOR POWER SUPPLY CIRCUIT-II

Check the voltage between mass air flow sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E7, F121
• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

8.

CHECK MASS AIR FLOW SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between mass air flow sensor harness connector and ECM harness connector.

2.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 9.

9.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E6, F123
• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

10.

CHECK MASS AIR FLOW SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between mass air flow sensor harness connector and ECM harness connector.

Mass air flow sensor

Ground

Voltage

Connector

Terminal

E15

4

Ground

Battery voltage

Mass air flow sensor

Ground

Voltage

Connector

Terminal

E15

5

Ground

Approx. 5V

Mass air flow sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E15

2

F85

30

Existed

EC-1336

< COMPONENT DIAGNOSIS >

[K9K]

P0101 MAF SENSOR

2.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> GO TO 11.

11.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E7, F121
• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

12.

CHECK MASS AIR FLOW SENSOR

Refer to

EC-1364, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Replace mass air flow sensor.

13.

CHECK INTERMITTENT INCIDENT

Refer to

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001089001

1.

CHECK MASS AIR FLOW SENSOR

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Turn ignition switch ON.

4.

Check the voltage between mass air flow sensor harness connector.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mass air flow sensor.

Mass air flow sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E15

6

F85

35

Existed

Mass air flow sensor

Voltage

Connector

Terminal

E15

2

(Mass air flow sensor

ground)

6

(Mass air flow sensor sig-

nal)

0.3 - 0.7V

P0110 IAT SENSOR

EC-1337

< COMPONENT DIAGNOSIS >

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P0110 IAT SENSOR

Description

INFOID:0000000001089055

The intake air temperature sensor is built into mass air flow sensor. The sensor detects intake air temperature
and transmits a signal to the ECM.
The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical
resistance of the thermistor decreases in response to the temperature rise.

DTC Logic

INFOID:0000000001115064

DTC DETECTION LOGIC

NOTE:
• If DTC P0110 is displayed with DTC P0641, first perform trouble diagnosis for DTC P0641. Refer to

EC-1393, "DTC Logic"

.

• Conditions for applying the diagnostic procedure to the stored DTCs:

The DTC is declared present after the ignition has been switched on for at least 10 seconds.

Diagnosis Procedure

INFOID:0000000001089004

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Check ground connection E17. Refer to Ground inspection in

GI-41, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT-II

1.

Disconnect mass air flow sensor (with intake air temperature sensor) harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between mass air flow sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E6, F123
• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between mass air flow sensor harness connector and ECM harness connector.

DTC No.

Trouble diagnosis name

Possible cause

P0110

INTAKE AIR TEMPERATURE SENSOR CIRCUIT
• CC.0: Short circuit to ground
• CO.1: Open circuit or short circuit to +12V
• 1.DEF: Micro-breaks

• Harness or connectors

(Intake air temperature sensor circuit is
open or shorted.)

• Intake air temperature sensor

Mass air flow sensor

Ground

Voltage

Connector

Terminal

E15

1

Ground

Approx. 5V

EC-1338

< COMPONENT DIAGNOSIS >

[K9K]

P0110 IAT SENSOR

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connector E6, F123
• Harness for open or short between ECM and mass air flow sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK INTAKE AIR TEMPERATURE SENSOR

Refer to

EC-1364, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace mass air flow sensor (with intake air temperature sensor).

7.

CHECK INTERMITTENT INCIDENT

Refer to

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001089003

1.

CHECK INTAKE AIR TEMPERATURE SENSOR

Check resistance between mass air flow sensor terminals 1 and 2 under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mass air flow sensor (with intake air temperature sensor).

Mass air flow sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E15

2

F85

30

Existed

Condition

Resistance (

Ω

)

10

°

C (50

°

F)

3,714

±

161

20

°

C (68

°

F)

2,448

±

95

30

°

C (86

°

F)

1,671

±

58