Nissan Note E12. Manual — part 217

P0172 FUEL INJECTION SYSTEM FUNCTION

EC-207

< DTC/CIRCUIT DIAGNOSIS >

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6. Also check harness for 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 FUEL PRESSURE

1. Release fuel pressure to zero. Refer to

EC-122, "Work Procedure"

.

2. Install fuel pressure gauge and check fuel pressure. Refer to

EC-122, "Work Procedure"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK FUEL HOSES AND FUEL TUBES

Check fuel hoses and fuel tubes for clogging.
Is the inspection result normal?

YES

>> Replace “fuel filter and fuel pump assembly”. Refer to

FL-6, "Exploded View"

.

NO

>> Repair or replace

6.

CHECK MASS AIR FLOW SENSOR

With CONSULT

1. Install all removed parts.

2. Check “MASS AIRFLOW” in “DATA MONITOR” mode with CONSULT.

With GST

1. Install all removed parts.

2. Check mass air flow sensor signal in “Service $01” with GST.

Is the measurement value within the specification?

YES

>> GO TO 7.

NO

>> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or

grounds. Refer to

EC-158, "DTC Logic"

.

7.

CHECK FUNCTION OF FUEL INJECTOR

With CONSULT

1. Start engine.

2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT.

3. Make sure that each circuit produces a momentary engine speed drop.

Without CONSULT

1. Let engine idle.

ECM

Ground

Continuity

Connector

Terminal

F11

49

Ground

Not existed

53

At idling: Approximately 350 kPa (3.5 bar, 3.57 kg/cm

2

, 51 psi)

0.8 - 4.0 g/s:

at idling

2.0 - 10.0 g/s:

at 2,500 rpm

0.8 - 4.0 g/s:

at idling

2.0 - 10.0 g/s:

at 2,500 rpm

EC-208

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P0172 FUEL INJECTION SYSTEM FUNCTION

2. Listen to each fuel injector operating sound.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Perform trouble diagnosis for FUEL INJECTOR. Refer

to

EC-314, "Component Function Check"

.

8.

CHECK FUEL INJECTOR

1. Remove fuel injector assembly. Refer to

EM-40, "Exploded View"

.

Keep fuel hose and all fuel injectors connected to fuel tube.

2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.

3. Disconnect all fuel injector harness connectors.

4. Disconnect all ignition coil harness connectors.

5. Prepare pans or saucers under each fuel injectors.

6. Crank engine for about 3 seconds.

Make sure fuel does not drip from fuel injector.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace the fuel injectors from which fuel is dripping. Always replace O-ring with new one. Refer

to

EM-40, "Exploded View"

.

9.

CHECK INTERMITTENT INCIDENT

Refer to

GI-41, "Intermittent Incident"

.

>> INSPECTION END

Clicking noise should be heard.

PBIB3332E

P0196 EOT SENSOR

EC-209

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P0196 EOT SENSOR

DTC Logic

INFOID:0000000009022557

DTC DETECTION LOGIC

NOTE:

If DTC P0196 is displayed with P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or

P0198. Refer to

EC-211, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure

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, confirm that battery voltage is more than 11 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE-I

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

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

3. Turn ignition switch ON.

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

5. Start engine and let it idle for 5 minutes and 10 seconds.

6. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>>

EC-210, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE-II

1. Select “DATA MONITOR” mode with CONSULT.

2. Check that “COOLAN TEMP/S” indicates above 60

°C (140°F).

If it is above 60

°C (140°F), go to the following steps.

If it is below 60

°C (140°F), warm engine up until “COOLAN TEMP/S” indicates more than 60°C (140°F).

Then perform the following steps.

3. Turn ignition switch OFF and soak the vehicle in a cool place.

4. Turn ignition switch ON.

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

6. Turn ignition switch ON.

NOTE:

Do not turn ignition switch OFF until step 10.

7. Select “DATA MONITOR” mode with CONSULT.

8. Check the following.

If they are within the specified range, perform the following steps.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0196

Engine oil temperature sensor
range/performance

Rationally incorrect voltage from the sensor
is sent to ECM, compared with the voltage
signals from engine coolant temperature
sensor and intake air temperature sensor.

• Harness or connectors

(The sensor circuit is open or shorted)

• Engine oil temperature sensor

COOLAN TEMP/S

Below 40

°C (104°F)

INT/A TEMP SE

Below 40

°C (104°F)

Difference between “COOLAN TEMP/S” and “INT/A TEMP SE”

Within 0

°C (32°F)

EC-210

< DTC/CIRCUIT DIAGNOSIS >

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P0196 EOT SENSOR

If they are out of the specified range, soak the vehicle to meet the above conditions. Then perform the fol-

lowing steps.

NOTE:

• Do not turn ignition switch OFF.

• If it is supposed to need a long period of time, do not deplete the battery.

9. Start engine and let it idle for 5 minutes.

10. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>>

EC-210, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009022558

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E78. Refer to Ground Inspection in

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ENGINE OIL TEMPERATURE SENSOR

Refer to

EC-210, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace engine oil temperature sensor.

3.

CHECK INTERMITTENT INCIDENT

Refer to

GI-41, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009022559

1.

CHECK ENGINE OIL TEMPERATURE SENSOR

1. Turn ignition switch OFF.

2. Disconnect engine oil temperature sensor harness connector.

3. Remove engine oil temperature sensor. Refer to

EM-92, "Exploded View"

.

4. Check resistance between engine oil temperature sensor termi-

nals by heating with hot water as shown in the figure.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace engine oil temperature sensor. Refer to

EM-92,

"Exploded View"

.

Terminals

Condition

Resistance (k

Ω)

1 and 2

Temperature [

°C (°F)]

20 (68)

2.10 - 2.90

50 (122)

0.68 - 1.00

90 (194)

0.236 - 0.260

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