Nissan March K13. Manual - part 181

P0172 FUEL INJECTION SYSTEM FUNCTION

EC-185

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

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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-285, "Component Function Check"

.

8.

CHECK FUELINJECTOR

1.

Remove fuel injector assembly. Refer to 

EM-37, "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-37, "Exploded View"

.

9.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-33, "Intermittent Incident"

.

>> Repair or replace malfunctioning part.

Clicking noise should be heard.

PBIB3332E

EC-186

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

P0222, P0223 TP SENSOR

P0222, P0223 TP SENSOR

DTC Logic

INFOID:0000000005989283

DTC DETECTION LOGIC

NOTE:
If DTC P0222 or P0223 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-186, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005989284

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground Inspection in 

GI-35, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK THROTTLE POSITION SENSOR 1 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 3.

NO

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

3.

CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0222

Throttle position sensor 
1 circuit low input

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

• Harness or connectors

(TP sensor 1 circuit is open or shorted.)

• Electric throttle control actuator

(TP sensor 1)

P0223

Throttle position sensor 
1 circuit high input

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

Electric throttle control actuator

Ground

Voltage

Connector

Terminal

F29

1

Ground

Approx. 5 V

P0222, P0223 TP SENSOR

EC-187

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

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3.

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

4.

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 1 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 5.

NO

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

5.

CHECK THROTTLE POSITION SENSOR

Check throttle position sensor. Refer to 

EC-187, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace electric throttle control actuator. Refer to 

EM-29, "WITH EGR CONTROL VALVE :

Exploded View"

.

6.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-33, "Intermittent Incident"

.

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000005989285

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 1st position. 

6.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F29

4

F8

36

Existed

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F29

2

F8

33

Existed

ECM

Condition

Voltage

Connector

+

−

Terminal

Terminal

F16

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-188

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

P0222, P0223 TP SENSOR

YES

>> INSPECTION END

NO

>> Replace electric throttle control actuator. Refer to 

EM-29, "WITH EGR CONTROL VALVE :

Exploded View"

.