Infiniti G35 (V35). Manual - part 329

DTC P0075, P0081 IVT CONTROL SOLENOID VALVE

EC-197

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4. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors F18, F201 (bank 1)

●

Harness for open and short between ECM and intake valve timing control solenoid valve

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

5. 

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Refer to 

EC-198, "Component Inspection"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Replace malfunctioning intake valve timing control solenoid valve.

6. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

EC-198

DTC P0075, P0081 IVT CONTROL SOLENOID VALVE

Component Inspection

NBS000VU

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

1.

Disconnect intake valve timing control solenoid valve harness connector.

2.

Check resistance between intake valve timing control solenoid
valve as follows.

If NG, replace intake valve timing control solenoid valve.
If OK, go to next step.

3.

Remove intake valve timing control solenoid valve.

4.

Provide 12V DC between intake valve timing control solenoid
valve terminals and then interrupt it. Make sure that the plunger
moves as shown in the figure.

CAUTION:

Do not apply 12V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
If NG, replace intake valve timing control solenoid valve.

NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.

Removal and Installation

NBS000VV

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Refer to 

EM-59, "TIMING CHAIN"

 .

Terminal

Resistance

1 and 2

7.0 - 7.5

Ω

 [at 20

°

C (68

°

F)]

1 or 2 and ground

∞Ω

(Continuity should not exist.)

PBIB0193E

PBIB2275E

DTC P0078 P0084 EVT CONTROL MAGNET RETARDER

EC-199

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DTC P0078 P0084 EVT CONTROL MAGNET RETARDER

PFP:23795

Component Description

NBS000OO

Exhaust valve timing control magnet retarder controls the shut/open
timing of the exhaust valve by ON/OFF pulse duty signals sent from
the ECM.
The longer pulse width retards valve angle.
The shorter pulse width advances valve angle.

CONSULT-II Reference Value in Data Monitor Mode

NBS000OP

Specification data are reference values.

On Board Diagnosis Logic

NBS000OQ

DTC Confirmation Procedure

NBS000OR

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-196, "Diagnostic Procedure"

.

 WITH GST

Following the procedure “WITH CONSULT-II” above.

PBIB2770E

MONITOR ITEM

CONDITION

SPECIFICATION

EX VTC DTY B1
EX VTC DTY B2

●

Engine: After warming up

●

Shift lever: Neutral

●

Air conditioner switch: OFF

●

No load

Idle

0% - 2%

Engine speed: Above 1,500 rpm

Approx. 0% - 70%

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0078
0078
(Bank 1)

Exhaust valve timing con-
trol magnet retarder cir-
cuit

An improper voltage is sent to the ECM 
through exhaust valve timing control magnet 
retarder.

●

Harness or connectors
(Exhaust valve timing control magnet 
retarder circuit is open or shorted.)

●

Exhaust valve timing control magnet 
retarder

P0084
0084
(Bank 2)

SEF058Y

EC-200

DTC P0078 P0084 EVT CONTROL MAGNET RETARDER

Wiring Diagram

NBS000OS

BANK 1

TBWM0944E