Infiniti M35/M45 Y50. Manual - part 690

 

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Infiniti M35/M45 Y50. Manual - part 690

 

 

DTC P1225 TP SENSOR

EC-1233

[VK45DE]

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DTC P1225 TP SENSOR

PFP:16119

Component Description

NBS005L5

Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi-
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
tion.

On Board Diagnosis Logic

NBS005L6

The MIL will not light up for this diagnosis.

DTC Confirmation Procedure

NBS005L7

NOTE:
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 10V at idle.

 WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Turn ignition switch OFF, wait at least 10 seconds.

4.

Turn ignition switch ON.

5.

If 1st trip DTC is detected, go to 

EC-1234, "Diagnostic Proce-

dure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

PBIB0145E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1225
1225

Closed throttle position 
learning performance

Closed throttle position learning value is excessively 
low.

Electric throttle control actuator
(TP sensor 1 and 2)

SEF058Y

EC-1234

[VK45DE]

DTC P1225 TP SENSOR

Diagnostic Procedure

NBS005L8

1. 

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1.

Turn ignition switch OFF.

2.

Remove the intake air duct.

3.

Check if foreign matter is caught between the throttle valve (1)
and the housing.

This illustration shows the view with intake air duct removed.

OK or NG

OK

>> GO TO 2.

NG

>> Remove the foreign matter and clean the electric throttle

control actuator inside.

2. 

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace the electric throttle control actuator.

2.

Perform 

EC-788, "Throttle Valve Closed Position Learning"

 .

3.

Perform 

EC-788, "Idle Air Volume Learning"

 .

>> INSPECTION END

Removal and Installation

NBS005L9

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to 

EM-179, "INTAKE MANIFOLD"

 .

PBIB2722E

DTC P1226 TP SENSOR

EC-1235

[VK45DE]

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EC

DTC P1226 TP SENSOR

PFP:16119

Component Description

NBS005LA

Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement. 
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi-
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
tion.

On Board Diagnosis Logic

NBS005LB

The MIL will not light up for this diagnosis.

DTC Confirmation Procedure

NBS005LC

NOTE:
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 10V at idle.

 WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Turn ignition switch OFF, wait at least 10 seconds.

4.

Turn ignition switch ON.

5.

Repeat steps 3 and 4 for 32 times.

6.

If 1st trip DTC is detected, go to 

EC-1236, "Diagnostic Proce-

dure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

PBIB0145E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1226
1226

Closed throttle position 
learning performance

Closed throttle position learning is not performed 
successfully, repeatedly.

Electric throttle control actuator
(TP sensor 1 and 2)

SEF058Y

EC-1236

[VK45DE]

DTC P1226 TP SENSOR

Diagnostic Procedure

NBS005LD

1. 

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1.

Turn ignition switch OFF.

2.

Remove the intake air duct.

3.

Check if foreign matter is caught between the throttle valve (1)
and the housing.

This illustration shows the view with intake air duct removed.

OK or NG

OK

>> GO TO 2.

NG

>> Remove the foreign matter and clean the electric throttle

control actuator inside.

2. 

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace the electric throttle control actuator.

2.

Perform 

EC-788, "Throttle Valve Closed Position Learning"

 .

3.

Perform 

EC-788, "Idle Air Volume Learning"

 .

>> INSPECTION END

Removal and Installation

NBS005LE

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to 

EM-179, "INTAKE MANIFOLD"

 .

PBIB2722E

 

 

 

 

 

 

 

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