Nissan Qashqai J11. Manual - part 303

 

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Nissan Qashqai J11. Manual - part 303

 

 

P0112, P0113 IAT SENSOR

ECM-189

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

ECM

N

P

O

P0112, P0113 IAT SENSOR

DTC Description

INFOID:0000000010702912

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (The intake air temperature sensor circuit is open or shorted.)
• Intake air temperature sensor

FAIL-SAFE

Not applicable

PERFORM DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 5 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

ECM-189, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010702913

1.

CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect mass air flow (MAF) sensor (intake air temperature sensor is built-in) harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between MAF sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0112

IAT SEN/CIRCUIT-B1
(Intake air temperature sensor 1 circuit low 
bank 1)

An excessively low voltage from the sensor is sent to ECM.

P0113

IAT SEN/CIRCUIT-B1
(Intake air temperature sensor 1 circuit high 
bank 1)

An excessively high voltage from the sensor is sent to ECM.

+

Ground

Voltage

MAF sensor

Connector

Terminal

F73

2

Ground

Approx. 5 V

ECM-190

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0112, P0113 IAT SENSOR

3.

Check the continuity between MAF sensor harness connector and ECM harness connector.

4.

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

Is the inspection result normal?

YES

>> Perform trouble diagnosis for power supply circuit.

NO

>> Repair or replace malfunctioning part.

3.

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 MAF sensor harness connector and ECM harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace malfunctioning part.

4.

CHECK INTAKE AIR TEMPERATURE SENSOR

Refer to 

ECM-190, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mass air flow (MAF) sensor (intake air temperature sensor is built-in). Refer to 

EM-147,

"Removal and Installation"

.

Component Inspection

INFOID:0000000010702914

1.

CHECK INTAKE AIR TEMPERATURE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect mass air flow sensor harness connector.

3.

Check resistance between mass air flow sensor terminals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mass air flow sensor (intake air temperature sensor is built-in). Refer to 

EM-147,

"Removal and Installation"

.

+

−

Continuity

MAF sensor

ECM

Connector

Terminal

Connector

Terminal

F73

2

F15

35

Existed

+

−

Continuity

MAF sensor

ECM

Connector

Terminal

Connector

Terminal

F73

1

F15

20

Existed

MAF sensor

Condition

Resistance

+

−

Terminal

1

2

Tempera-
ture [

°

C (

°

)] 

25 (77)

1.80 - 2.20 k

Ω

P0117, P0118 ECT SENSOR

ECM-191

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

ECM

N

P

O

P0117, P0118 ECT SENSOR

DTC Description

INFOID:0000000010702915

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (The engine coolant temperature sensor circuit is open or shorted.)
• Engine coolant temperature sensor

FAIL-SAFE

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 5 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

ECM-191, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010702916

1.

CHECK ENGINE COOLANT TEMPERATURE SENSOR POWER SUPPLY-1

1.

Turn ignition switch OFF.

2.

Disconnect engine coolant temperature (ECT) sensor harness connector.

3.

Turn ignition switch ON.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0117

ECT SEN/CIRC
(Engine coolant temperature sensor 1 cir-
cuit low)

An excessively low voltage from the sensor is sent to ECM.

P0118

ECT SEN/CIRC
(Engine coolant temperature sensor 1 cir-
cuit high)

An excessively high voltage from the sensor is sent to ECM.

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Combustion 
control mode

Stratified charge 
combustion 
control at start-
ing

No stratified charge combustion at starting (cold start).

Idle speed con-
trol

Stops feedback control of idle speed and controls with specified speed.

Recovery speed 
control at decel-
erating

Stops recovery speed control by the fuel cut at decelerating and controls with specified speed.

Idle neutral con-
trol

Stops idle neutral control.

Others

Engine speed will not rise more than 1,800rpm due to the fuel cut.

ECM-192

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0117, P0118 ECT SENSOR

4.

Check the voltage between ECT sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK ENGINE COOLANT TEMPERATURE SENSOR POWER SUPPLY-2

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECT sensor harness connector and ECM harness connector.

4.

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

Is the inspection result normal?

YES

>> Perform trouble diagnosis for power supply circuit.

NO

>> Repair or replace malfunctioning part.

3.

CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECT sensor harness connector and ECM harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace malfunctioning part.

4.

CHECK ECT SENSOR

Refer to 

ECM-192, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ECT sensor. Refer to 

CO-53, "Exploded View"

.

Component Inspection

INFOID:0000000010702917

1.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect engine coolant temperature sensor harness connector.

3.

Remove engine coolant temperature sensor.

+

Ground

Voltage

ECT sensor

Connector

Terminal

F137

1

Ground

Approx. 5 V

+

−

Continuity

ECT sensor

ECM

Connector

Terminal

Connector

Terminal

F137

1

F15

31

Existed

+

−

Continuity

ECT sensor

ECM

Connector

Terminal

Connector

Terminal

F137

2

F15

25

Existed

 

 

 

 

 

 

 

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