Nissan Qashqai J11. Manual - part 509

EC9-192

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0095 IAT SENSOR 2

P0095 IAT SENSOR 2

DTC Logic

INFOID:0000000010309100

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DIAGNOSIS PROCEDURE

NOTE:
DTC P0095 can not duplicate.

>> Proceed to 

EC9-192, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010309101

1.

CHECK ECM HARNESS CONNECTOR CONNECTION

1.

Turn ignition switch OFF.

2.

 Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK INTAKE AIR TEMPERATURE SENSOR 2 HARNESS CONNECTOR CONNECTION

1.

Turn ignition switch OFF.

2.

 Check turbocharger boost sensor (with intake air temperature sensor 2) harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK INTAKE AIR TEMPERATURE SENSOR 2

Refer to 

EC9-193, "Component Inspection (Intake Air Temperature Sensor 2)"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace error-detected parts.

4.

CHECK INTAKE AIR TEMPERATURE SENSOR 2 CIRCUIT FOR OPEN AND SHORT

Check intake air temperature sensor 2 circuit for open and short.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0095

AIR TEMP SEN/CIRC
(Intake air temperature sen-
sor 2 circuit bank 1)
• 1.DEF: VOLTAGE TOO 

LOW

• 2.DEF: VOLTAGE TOO 

HIGH

• 3.DEF: IMPLAUSIBLE 

SIGNAL

• Signal voltage from the intake air 

temperature sensor 2 remains 4.9 V 
or more for 1 second or more.

• An excessively low voltage from the 

intake air temperature sensor 2 is 
sent to ECM.

• ECM receives an abnormal signal.

• Harness or connectors

(Intake air temperature sensor 2 circuit is 
open or shorted.

• Intake air temperature sensor 2

P0095 IAT SENSOR 2

EC9-193

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE UPSTREAM TEMPERATURE SENSOR 

Refer to 

EC9-193, "Component Inspection (Low Pressure EGR Volume Control Valve Upstream Temperature

Sensor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace error-detected parts.

Component Inspection (Intake Air Temperature Sensor 2)

INFOID:0000000010309102

1.

CHECK INTAKE AIR TEMPERATURE SENSOR 2

1.

Disconnect turbocharger boost sensor (with intake air temperature sensor 2) harness connector.

2.

Check resistance between turbocharger boost sensor (with intake air temperature sensor 2) harness con-
nector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace turbocharger boost sensor (with intake air temperature sensor 2).

Component Inspection (Low Pressure EGR Volume Control Valve Upstream Temper-
ature Sensor)

INFOID:0000000010309103

1.

CHECK LOW PRESSURE EGR TEMPERATURE SENSOR

1.

Disconnect low pressure EGR temperature sensor harness connector.

2.

Check resistance between low pressure EGR temperature sensor terminals under the following condi-
tions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace low pressure EGR temperature sensor.

+

-

Continuity

ECM

Turbocharger boost sensor 

(with Intake air temperature 

sensor 2)

Connector

Terminal

Connector

Terminal

F82

59

F121

3

Existed

81

1

86

2

Turbocharger boost sensor

(with intake air temperature sensor 2)

Condition

Resistance

+

-

Terminals

2

1

Temperature

°

 C (

°

F)

20 (68)

2.499 – 2.583 k

Ω

Low pressure EGR temperature sen-

sor

Condition

Resistance

+

-

Terminal

1

2

Temperature

°

 C (

°

F)

20 (68)

57.094 – 65.836 k

Ω

EC9-194

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0100 MAF SENSOR

P0100 MAF SENSOR

DTC Logic

INFOID:0000000010309104

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 2 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC9-194, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309105

1.

CHECK MASS AIR FLOW SENSOR POWER SUPPLY CIRCUIT

Check the power supply of the mass air flow sensor.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble diagnosis for power supply circuit.

2.

CHECK MASS AIR FLOW SENSOR CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check mass air flow sensor circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0100

AIR FLOW SENSOR CIRCUIT
(Mass or volume air flow “A” cir-
cuit)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH

• An excessively low voltage from the sensor 

is sent to ECM for 2 seconds or more.

• An excessively high voltage from the sensor 

is sent to ECM for 2 seconds or more.

• Harness or connectors

(Mass air flow sensor circuit is open or 
shorted.)

• Mass air flow sensor

+

-

Voltage

Mass air flow sensor

Connector

Terminal

F91

3

Ground

5.0 V

+

-

Continuity

ECM

Mass air flow sensor

Connector

Terminal

Connector

Terminal

F82

78

F91

4

Existed

82

2

P0100 MAF SENSOR

EC9-195

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

3.

CHECK MASS AIR FLOW SENSOR 

Refer to 

EC9-195, "Component Inspection (Mass Air Flow Sensor)"

.

Is the inspection result normal?

YES

>> Replace error-detected parts.

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

Component Inspection (Mass Air Flow Sensor)

INFOID:0000000010309106

1.

CHECK MASS AIR FLOW SENSOR

1.

Disconnect mass air flow sensor harness connector.

2.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mass air flow sensor.

Mass air flow sensor

Resistance

+

-

Terminal

3

4

2 – 10 k

Ω