Nissan X-Trail 32. Manual - part 871

P0117, P0118 ECT SENSOR

EC-613

< DTC/CIRCUIT DIAGNOSIS >

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1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECT 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 ENGINE COOLANT TEMPERATURE SENSOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

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

4.

Also check harness for short to ground to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check the engine coolant temperature sensor. Refer to 

EC-613, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace engine coolant temperature sensor. Refer to 

CO-52, "Exploded View"

.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000010986330

1.

CHECK ENGINE COOLANT TEMPERATURE (ECT) SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect ECT sensor harness connector.

3.

Remove ECT sensor.

+

−

Continuity

ECT sensor

ECM

Connector

Terminal

Connector

Terminal

F80

1

F85

28

Existed

+

−

Continuity

ECT sensor

ECM

Connector

Terminal

Connector

Terminal

F80

2

F85

27

Existed

EC-614

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0117, P0118 ECT SENSOR

4.

Check resistance between ECT sensor terminals by heating
with hot water as shown in the figure.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace engine coolant temperature sensor. Refer to 

CO-52, "Exploded View"

.

ECT 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

P0122, P0123 TP SENSOR

EC-615

< DTC/CIRCUIT DIAGNOSIS >

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P0122, P0123 TP SENSOR

DTC Description

INFOID:0000000010986331

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (TP sensor 2 circuit is open or shorted.)
• Electric throttle control actuator (TP sensor 2)

FAIL-SAFE

• The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle

position to be within +10 degrees.

• The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the

acceleration will be poor.

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC P0122 or P0123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

EC-707, "DTC Description"

.

NO

>> GO TO 2.

2.

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 8 V at idle.

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC-615, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010986332

1.

CHECK DTC PRIORITY

If DTC P0122 or P0123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

EC-707, "DTC Description"

.

NO

>> GO TO 2.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0122

TP SEN 2/CIRC-B1
(Throttle/pedal position sensor/switch 

″

A

″

 

circuit low)

An excessively low voltage from the TP sensor 2 is sent to ECM.

P0123

TP SEN 2/CIRC-B1
(Throttle/pedal position sensor/switch 

″

A

″

 

circuit high)

An excessively high voltage from the TP sensor 2 is sent to ECM.

EC-616

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0122, P0123 TP SENSOR

2.

CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect electric throttle control actuator harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between electric throttle control actuator harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

4.

Also check harness for short to power.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

4.

CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT

1.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

+

−

Voltage

(Approx.)

Electric throttle control actuator

Connector

Terminal

F113

2

Ground

5 V

+

−

Continuity

Electric throttle control actu-

ator

ECM

Connector

Terminal

Connector

Terminal

F113

2

F68

80

Existed

+

−

Continuity

Electric throttle control actu-

ator

ECM

Connector

Terminal

Connector

Terminal

F113

4

F68

78

Existed