Nissan March K13. Manual - part 236

P0117, P0118 ECT SENSOR

EC-405

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

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Check engine coolant temperature sensor. Refer to 

EC-405, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace engine coolant temperature sensor. Refer to 

CO-23, "Exploded View"

.

4.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

XX-XX, "*****"

.

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000006037335

1.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect engine coolant temperature sensor harness connector.

3.

Remove engine coolant temperature sensor.

4.

Check resistance between engine coolant temperature 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-23, "Exploded View"

.

Terminals

Condition

Resistance

1 and 2

Temperature [

°

C (

°

F)]

20 (68)

2.35 - 2.73 k

Ω

50 (122)

0.68 - 1.00 k

Ω

90 (194)

0.236 - 0.260 k

Ω

JMBIA0080ZZ

EC-406

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

P0122, P0123 TP SENSOR

P0122, P0123 TP SENSOR

DTC Logic

INFOID:0000000006037336

DTC DETECTION LOGIC

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

EC-228, "DTC 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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-406, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006037337

1.

CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT

1.

Disconnect electric throttle control actuator harness connector.

2.

Turn ignition switch ON.

3.

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

2.

CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT

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.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0122

Throttle position sensor 
2 circuit low input

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

• Harness or connectors

(TP sensor 2 circuit is open or shorted.)

• Electric throttle control actuator

(TP sensor 2)

P0123

Throttle position sensor 
2 circuit high input

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

Electric throttle control actuator

Ground

Voltage

Connector

Terminal

F29

1

Ground

Approx. 5 V

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F29

4

F16

36

Existed

P0122, P0123 TP SENSOR

EC-407

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

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4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

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

2.

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 THROTTLE POSITION SENSOR

Check throttle position sensor. Refer to 

EC-407, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace electric throttle control actuator. Refer to 

EM-29, "WITH EGR CONTROL VALVE :

Exploded View"

.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

XX-XX, "*****"

.

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000006037338

1.

CHECK THROTTLE POSITION SENSOR

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Perform 

EC-105, "Work Procedure"

.

4.

Turn ignition switch ON.

5.

Set selector lever to D (A/T) 1st (M/T) position. 

6.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace electric throttle control actuator.

2.

Perform 

EC-408, "Special Repair Requirement"

.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F29

3

F16

34

Existed

ECM

Condition

Voltage

Connector

Terminal

+

−

F8

33

(TP sensor 1 signal)

36

Accelerator pedal

Fully released

More than 0.36 V

Fully depressed

Less than 4.75 V

34

 (TP sensor 2 signal)

Fully released

Less than 4.75 V

Fully depressed

More than 0.36 V

EC-408

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

P0122, P0123 TP SENSOR

>> INSPECTION END

Special Repair Requirement

INFOID:0000000006037339

1.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform throttle valve closed position learning. Refer to 

EC-105, "Work Procedure"

.

>> GO TO 2

2.

PERFORM IDLE AIR VOLUME LEARNING

Perform idle air volume learning. Refer to 

EC-106, "Work Procedure"

.

>> END