Nissan Juke F15. Manual - part 568

P1226 TP SENSOR

EC-1085

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P1226 TP SENSOR

DTC Logic

INFOID:0000000012198604

DTC DETECTION 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 10 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

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

3. Turn ignition switch ON.

4. Repeat steps 2 and 3 for 32 times.

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

YES

>> Proceed to 

EC-1085, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000012198605

1.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF.

2. Remove the intake air duct. Refer to 

EM-192, "Exploded View"

.

3. Check if foreign matter is caught between the throttle valve and the housing.
Is the inspection result normal?

YES

>> Replace electric throttle control actuator. Refer to 

EM-197, "Exploded View"

.

NO

>> Remove the foreign matter and clean the electric throttle control actuator inside, then perform

throttle valve closed position learning. Refer to 

EC-754, "Description"

.

DTC No.

Trouble diagnosis name

(Trouble diagnosis con-

tent)

DTC detecting condition

Possible cause

P1226

CTP LEARNING-B1
(Closed throttle position 
learning performance)

Closed throttle position learning is not performed 
successfully, repeatedly.

Electric throttle control actuator
(TP sensor 1 and 2)

EC-1086

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

P1423, P1424 COLD START CONTROL

P1423, P1424 COLD START CONTROL

Description

INFOID:0000000012198606

ECM controls fuel injection timing and fuel injection quantity when engine is started with the engine cold.

This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions.

DTC Logic

INFOID:0000000012198607

DTC DETECTION LOGIC

NOTE:

• If DTC P1423 or P1424 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

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

WITH CONSULT

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

2. Turn ignition switch ON.

3. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.

4. Check that “COOLAN TEMP/S”.

-

If it is between 5

°C (41°F) and 40°C (104°F) go to the following steps.

-

If it is below 5

°C (41°F) warm engine up to more than 5°C (41°F) and retry from step 1.

-

If it is above 40

°C (104°F) cool engine down to less than 40°C (104°F) and retry from step 1.

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

6. Check 1st trip DTC.

WITH GST

Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-1086, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000012198608

1.

INSPECTION START

1. Turn ignition switch ON.

2. Erase DTC.

3. Perform DTC confirmation procedure. Refer to 

EC-1086, "DTC Logic"

.

4. Check 1st trip DTC.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1423

COLD START CONTROL
(Cold start emission reduction 
strategy monitoring)

ECM does not control fuel injection timing prop-
erly when engine is started with the engine cold.

ECM

P1424

COLD START CONTROL
(Cold start emission reduction 
strategy monitoring)

ECM does not control fuel injection quantity 
properly when engine is started with the engine 
cold.

P1423, P1424 COLD START CONTROL

EC-1087

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the 1st trip DTC P1423 or P1424 displayed again?

YES

>> Replace ECM. Refer to 

EC-1256, "Removal and Installation"

.

NO

>> INSPECTION END

EC-1088

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

P1451 PRESSURE SENSOR

P1451 PRESSURE SENSOR

DTC Logic

INFOID:0000000012198609

DTC DETECTION LOGIC

NOTE:

If DTC P1451 is displayed with DTC P0452 or P0453, first perform the trouble diagnosis for DTC P0452 or

P0453. Refer to 

EC-1005, "DTC Logic"

 or 

EC-1008, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

NOTE:

Never refuel before and during the following 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 warm it up to normal operating temperature

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

3. Start the engine. Wait at least for 15 seconds after the start of idle running.

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

YES

>> Proceed to 

EC-1088, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000012198610

1.

CHECK HOSE AND PIPING

1. Turn ignition switch OFF.

2. Check the following.

-

Blockage, crush, or damage in the hose and the piping of EVAP purge line between fuel tank and intake

manifold. 

-

Blockage, crush, or damage in the hose and the piping of intake air passage between inlet air duct and

intake manifold.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts

2.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Check EVAP control system pressure sensor. Refer to 

EC-1089, "Component Inspection (EVAP Control Sys-

tem Pressure Sensor)"

.

Is the inspection result normal?

DTC No.

Trouble diagnosis

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1451

TC/SC PRES-EVAP PRES
(EVAP control system pressure 
sensor/turbocharger boost sen-
sor correlation)

ECM detects a state that the pressure differ-
ence remains 

−13.0 kPa (−98 mmHg, −3.83 

inHg) or less/13.5 kPa (102 mmHg, 3.99 in-
Hg) or more for continuously for 5 seconds or 
more under the condition that the pressure of 
the EVAP control system pressure sensor 
and that of the turbocharger boost sensor are 
equal.

• EVAP control system pressure sensor
• Turbocharger boost sensor
• Clogging, crushing, or damage in 

hose or piping