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Nissan Juke F15. Manual - part 357

P0102, P0103 MAF SENSOR

EC-241

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

YES

>> INSPECTION END

>> GO TO 2.

CHECK FOR THE CAUSE OF UNEVEN AIR FLOW THROUGH MASS AIR FLOW SENSOR

1. Turn ignition switch OFF.

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

Crushed air ducts

Malfunctioning seal of air cleaner element

Uneven dirt of air cleaner element

Intake valve deposits

Improper specification of intake air system parts

Is the inspection result normal?

YES

>> GO TO 4.

>> GO TO 3.

CHECK MASS AIR FLOW SENSOR-II

With CONSULT

1. Repair or replace malfunctioning part.

2. Start engine and warm it up to normal operating temperature.

3. Connect CONSULT and select “DATA MONITOR” mode of “ENGINE”.

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

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 and ground.

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

Is the inspection result normal?

YES

>> INSPECTION END

>> GO TO 4.

CHECK MASS AIR FLOW SENSOR-III

With CONSULT

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

Ignition switch ON (Engine stopped.)

Approx. 0.4 V

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

0.9 - 1.2 V

2,500 rpm (Engine is warmed-up to normal operating
temperature.)

1.5 - 2.0 V

Idle to about 4,000 rpm

0.9 - 1.2 V to Approx. 2.4 V*

ECM

Condition

Voltage

Connector

−

Terminal

F25

Ignition switch ON (Engine
stopped.)

Approx. 0.4 V

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

0.9 - 1.2 V

2,500 rpm (Engine is warmed-up to
normal operating temperature.)

1.5 - 2.0 V

Idle to about 4,000 rpm

0.9 - 1.2 V to Ap-

prox. 2.4 V*

EC-242

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

P0102, P0103 MAF SENSOR

3. Start engine and warm it up to normal operating temperature.

4. Connect CONSULT and select “DATA MONITOR” mode of “ENGINE”.

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

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. Check the voltage between ECM harness connector and ground.

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

Is the inspection result normal?

YES

>> INSPECTION END

>> Clean or replace mass air flow sensor. Refer to

EM-27, "Exploded View"

Monitor item

Condition

MAS A/F SE-B1

Ignition switch ON (Engine stopped.)

Approx. 0.4 V

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

0.9 - 1.2 V

2,500 rpm (Engine is warmed-up to normal operating
temperature.)

1.5 - 2.0 V

Idle to about 4,000 rpm

0.9 - 1.2 V to Approx. 2.4 V*

ECM

Condition

Voltage

Connector

−

Terminal

F25

Ignition switch ON (Engine
stopped.)

Approx. 0.4 V

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

0.9 - 1.2 V

2,500 rpm (Engine is warmed-up to
normal operating temperature.)

1.5 - 2.0 V

Idle to about 4,000 rpm

0.9 - 1.2 V to Ap-

prox. 2.4 V*

P0111 IAT SENSOR 1

EC-243

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

P0111 IAT SENSOR 1

DTC Logic

INFOID:0000000012197795

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

INSPECTION START

Is it necessary to erase permanent DTC?

YES

>> GO TO 3.

>> GO TO 2.

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to

EC-244, "Component Function Check"

NOTE:

Use the component function check to check the overall function of the IAT sensor 1 circuit. During this check,

a 1st trip DTC might not be confirmed.
Is the inspection result normal?

YES

>> INSPECTION END

>> Proceed to

EC-244, "Diagnosis Procedure"

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-

dure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

• Before performing the following procedure, do not add fuel.

• Before performing the following procedure, check that fuel level is between 1/4 and 4/4.

• Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

>> GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and let it idle for 60 minutes.

2. Move the vehicle to a cool place.

NOTE:

Cool the vehicle in an environment of ambient air temperature between

−10°C (14°F) and 35°C (95°F).

3. Turn ignition switch OFF and soak the vehicle for 12 hours.

CAUTION:

Never turn ignition switch ON during soaking.

NOTE:

The vehicle must be cooled with the hood open.

4. Start engine and let it idle for 5 minutes or more.

CAUTION:

Never turn ignition switch OFF during idling.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0111

IAT SENSOR 1 B1
[Intake air temperature (IAT)
sensor 1 circuit range/perfor-
mance]

The comparison result of signals transmitted
to ECM from each temperature sensor (IAT
sensor 1, IAT sensor 2, ECT sensor, FTT
sensor, and EOT sensor) shows that the volt-
age signal of the IAT sensor 1 is higher/lower
than that of other temperature sensors when
the engine is started with its cold state.

• Harness or connectors

(High or low resistance in the IAT sen-
sor 1 circuit)

• IAT sensor 1