Nissan Tiida C11. Manual - part 620

EC-1130

< COMPONENT DIAGNOSIS >

[K9K]

P0110 IAT SENSOR

P0110 IAT SENSOR

Description

INFOID:0000000001162577

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:0000000001162578

DTC DETECTION LOGIC

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

EC-1180, "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:0000000001162579

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

 Check ground connection E15. Refer to Ground inspection in 

GI-58, "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 3.

NO

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

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 mass air flow sensor harness connector and ECM harness connector.

4.

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

Is the inspection result normal?

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

F31

1

Ground

Approx. 5V

Mass air flow sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F31

2

F10

30

Existed

P0110 IAT SENSOR

EC-1131

< COMPONENT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

YES

>> GO TO 4.

NO

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

4.

CHECK INTAKE AIR TEMPERATURE SENSOR 

Refer to 

EC-1131, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001162580

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).

Condition

Resistance (

Ω

)

10

°

C (50

°

F)

3,714 

±

 161

20

°

C (68

°

F)

2,448 

±

 95

30

°

C (86

°

F)

1,671 

±

 58

EC-1132

< COMPONENT DIAGNOSIS >

[K9K]

P0115 ECT SENSOR

P0115 ECT SENSOR

Description

INFOID:0000000001162581

The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies
a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature
input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance
of the thermistor decreases as temperature increases.

DTC Logic

INFOID:0000000001162582

DTC DETECTION LOGIC

NOTE:
• 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.

• If the DTC is present:
- Cooling fan motor is always operate.
- Air conditioner is not operate.

Diagnosis Procedure

INFOID:0000000001162583

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Check ground connection E15. Refer to Ground inspection in 

GI-58, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ENGINE COOLANT TEMPERATURE SENSOR SUPPLY CIRCUIT

1.

Disconnect engine coolant temperature sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between engine coolant temperature sensor connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK ENGINE COOLANT TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between engine coolant temperature sensor harness connector and ECM harness
connector.

DTC No.

Trouble diagnosis name

Possible cause

P0115

ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT
• CC.0: Short circuit to ground
• CO.1: Open circuit or short circuit to +12V
• 1.DEF: Micro-breaks
• 2.DEF: Signal incoherence

• Harness or connectors

(Engine coolant temperature sensor cir-
cuit is open or shorted.)

• Engine coolant temperature sensor

Engine coolant temperature sensor

Ground

Voltage

Connector

Terminal

F6

3

Ground

Approx. 5V

Engine coolant temperature sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F6

2

F10

33

Existed

P0115 ECT SENSOR

EC-1133

< COMPONENT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK ENGINE COOLANT TEMPERATURE SENSOR 

Refer to 

EC-1133, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace engine coolant temperature sensor.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001162584

1.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check resistance between engine coolant temperature sensor terminals 2 and 3 under the following condi-
tions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace Engine coolant temperature sensor.

Terminal

Condition

Resistance (

Ω

)

2 and 3

25

°

C (77

°

F)

2,252 

±

 112.16

50

°

C (112

°

F)

810 

±

 39

80

°

C (176

°

F)

283 

±

 8