Nissan X-Trail 32. Manual - part 883

P0172 FUEL INJECTION SYSTEM FUNCTION

EC-661

< DTC/CIRCUIT DIAGNOSIS >

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7.

Crank engine for about 3 seconds.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace fuel injectors from which fuel does not spray

out. Always replace O-ring with new ones. Refer to 

EM-

184, "Removal and Installation"

.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Fuel should be sprayed evenly for each fuel injector.

PBIA9666J

EC-662

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0197, P0198 EOT SENSOR

P0197, P0198 EOT SENSOR

DTC Description

INFOID:0000000010986355

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (EOT sensor circuit is open or shorted.)
• Engine oil temperature sensor

FAIL-SAFE

Exhaust valve timing control does not function.

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.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and wait at least 5 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-662, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010986356

1.

CHECK ENGINE OIL TEMPERATURE SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect engine oil temperature (EOT) sensor harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between EOT sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK ENGINE OIL 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

P0197

EOT SEN/CIRC
(Engine oil temperature sensor low)

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

P0198

EOT SEN/CIRC
(Engine oil temperature sensor high)

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

+

−

Voltage

(Approx.)

EOT sensor

Connector

Terminal

F112

1

Ground

5 V

P0197, P0198 EOT SENSOR

EC-663

< DTC/CIRCUIT DIAGNOSIS >

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3.

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

4.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

3.

CHECK EOT SENSOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

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

4.

Also check harness for short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK ENGINE OIL TEMPERATURE SENSOR

Check the engine oil temperature sensor. Refer to 

EC-663, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace engine oil temperature sensor. Refer to 

EC-440, "Component Parts Location"

.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000010986357

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.

4.

Check resistance between engine oil temperature sensor termi-
nals by heating with hot water as shown in the figure.

+

−

Continuity

EOT sensor

ECM

Connector

Terminal

Connector

Terminal

F112

1

F85

25

Existed

+

−

Continuity

EOT sensor

ECM

Connector

Terminal

Connector

Terminal

F112

2

F85

26

Existed

Engine oil temperature 

sensor

Condition

Resistance (k

Ω

)

+

−

Terminal

1

2

Temperature 
[

°

C (

°

F)]

20 (68)

2.37 - 2.63

50 (122)

0.68 - 1.00

90 (194)

0.236 - 0.260

JMBIA0080ZZ

EC-664

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0197, P0198 EOT SENSOR

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace engine oil temperature sensor. Refer to 

EC-440, "Component Parts Location"

.