Infiniti G35 (V35). Manual — part 329
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
EC-197
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EC
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
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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EC
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
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