Infiniti M35/M45 Y50. Manual - part 428

 

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Infiniti M35/M45 Y50. Manual - part 428

 

 

DTC P0075, P0081 IVT CONTROL SOLENOID VALVE

EC-185

[VQ35DE]

C

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EC

DTC P0075, P0081 IVT CONTROL SOLENOID VALVE

PFP:23796

Component Description

NBS004UG

Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.

CONSULT-II Reference Value in Data Monitor Mode

NBS004UH

Specification data are reference values.

On Board Diagnosis Logic

NBS004UI

DTC Confirmation Procedure

NBS004UJ

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.

 WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine and let it idle for 5 seconds.

4.

If 1st trip DTC is detected, go to 

EC-190, "Diagnostic Procedure"

.

 WITH GST

Following the procedure “WITH CONSULT-II” above.

PBIB1842E

MONITOR ITEM

CONDITION

SPECIFICATION

INT/V SOL (B1)
INT/V SOL (B2)

Engine: After warming up

Selector lever: P or N

Air conditioner switch: OFF

No load

Idle

0% - 2%

When revving engine up to 2,000 rpm 
quickly

Approx. 25% - 50%

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0075
0075
(Bank 1)

Intake valve timing control 
solenoid valve circuit

An improper voltage is sent to the ECM 
through intake valve timing control solenoid 
valve.

Harness or connectors
(Intake valve timing control solenoid valve 
circuit is open or shorted.)

Intake valve timing control solenoid valve

P0081
0081
(Bank 2)

SEF058Y

EC-186

[VQ35DE]

DTC P0075, P0081 IVT CONTROL SOLENOID VALVE

Wiring Diagram

NBS004UK

BANK 1

TBWT0971E

DTC P0075, P0081 IVT CONTROL SOLENOID VALVE

EC-187

[VQ35DE]

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EC

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

11

W/R

Intake valve timing control 
solenoid valve (bank 1)

[Engine is running]

Warm-up condition

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

Warm-up condition

When revving engine up to 2,000rpm 
quickly

7 - 12V

111

SB

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch: OFF]

For a few seconds after turning ignition 
switch OFF

0 - 1.5V

[Ignition switch: OFF]

More than a few seconds after turning igni-
tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

119

120

R
R

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

PBIB1790E

EC-188

[VQ35DE]

DTC P0075, P0081 IVT CONTROL SOLENOID VALVE

BANK 2

TBWT0972E

 

 

 

 

 

 

 

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