Nissan Tiida C11. Manual - part 538

EC-802

< COMPONENT DIAGNOSIS >

[MR18DE]

P0102, P0103 MAF SENSOR

1.

Turn ignition switch OFF.

2.

Check for the cause of uneven air flow through mass air flow sensor. Refer to following.

-

Crushed air ducts

-

Malfunctioning seal of air cleaner element

-

Uneven dirt of air cleaner element

-

Improper specification of intake air system parts

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK MASS AIR FLOW SENSOR-II

With CONSULT-III

1.

Repair or replace malfunctioning part.

2.

Start engine and warm it up to normal operating temperature.

3.

Connect CONSULT-III and select “DATA MONITOR” mode.

4.

Select “MAS A/F SE-B1” and check indication.

*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.

Without CONSULT-III

1.

Repair or replace malfunctioning part.

2.

Start engine and warm it up to normal operating temperature.

3.

Check the voltage between ECM harness connector terminals as follows.

*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 4.

4.

CHECK MASS AIR FLOW SENSOR-III

With CONSULT-III

1.

Turn ignition switch OFF.

2.

Disconnect mass air flow sensor harness connector and reconnect it again.

3.

Start engine and warm it up to normal operating temperature.

4.

Connect CONSULT-III and select “DATA MONITOR” mode.

5.

Select “MAS A/F SE-B1” and check indication.

*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.

Without CONSULT-III

1.

Turn ignition switch OFF.

2.

Disconnect mass air flow sensor harness connector and reconnect it again.

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1

Ignition switch ON (Engine stopped.)

Approx. 0.4V

Idle (Engine is warmed-up to normal operating temperature.)

0.9 - 1.1V

Idle to about 4,000 rpm

0.9 - 1.1V to Approx. 2.4V*

(+)

(–)

Condition

Voltage

Connector

Terminal

Connector

Terminal

F11

45

(MAF sensor)

F11

52

Ignition switch ON (Engine stopped.)

Approx. 0.4V

Idle (Engine is warmed-up to normal operat-
ing temperature.)

0.9 - 1.1V

Idle to about 4,000 rpm

0.9 - 1.1V to Approx. 2.4V*

Monitor item

Condition

MAS A/F SE-B1

MAS A/F SE-B1

Ignition switch ON (Engine stopped.)

Approx. 0.4V

Idle (Engine is warmed-up to normal operating temperature.)

0.9 - 1.1V

Idle to about 4,000 rpm

0.9 - 1.1V to Approx. 2.4V*

P0102, P0103 MAF SENSOR

EC-803

< COMPONENT DIAGNOSIS >

[MR18DE]

C

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EC

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3.

Start engine and warm it up to normal operating temperature.

4.

Check the voltage between ECM harness connector terminals as follows.

*: Check for linear voltage rise in response to engine being increased to about 4,000 rpm.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Clean or replace mass air flow sensor.

(+)

(–)

Condition

Voltage

Connector

Terminal

Connector

Terminal

F11

45

(MAF sensor)

F11

52

Ignition switch ON (Engine stopped.)

Approx. 0.4V

Idle (Engine is warmed-up to normal operat-
ing temperature.)

0.9 - 1.1V

Idle to about 4,000 rpm

0.9 - 1.1V to Approx. 2.4V*

EC-804

< COMPONENT DIAGNOSIS >

[MR18DE]

P0112, P0113 IAT SENSOR

P0112, P0113 IAT SENSOR

Description

INFOID:0000000001161772

The intake air temperature sensor is built-into mass air flow sensor
(1). 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.

<Reference data>

*: These data are reference values and are measured between ECM terminal 46
(Intake air temperature sensor) and 55.

DTC Logic

INFOID:0000000001161773

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 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

>> Go to 

EC-805, "Diagnosis Procedure"

.

NO

>> INSPECTION END

PBIA9559J

Intake air temperature

°

C (

°

F)

Voltage*

V

Resistance

k

Ω

25 (77)

3.3

1.800 - 2.200

80 (176)

1.2

0.283 - 0.359

SEF012P

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P0112

Intake air tempera-
ture sensor circuit 
low input

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

• Harness or connectors

(The sensor circuit is open or shorted.)

• Intake air temperature sensor

P0113

Intake air tempera-
ture sensor circuit 
high input

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

P0112, P0113 IAT SENSOR

EC-805

< COMPONENT DIAGNOSIS >

[MR18DE]

C

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Diagnosis Procedure

INFOID:0000000001161774

1.

CHECK GROUND CONNECTION

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

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

>> 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?

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-805, "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:0000000001161775

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 follows.

MAF sensor

Ground

Voltage

Connector

Terminal

F31

5

Ground

Approx. 5V

MAF sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F31

6

F11

55

Existed