Infiniti G35 (V35). Manual — part 327
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-189
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EC
2.
CHECK HO2S2 POWER SUPPLY CIRCUIT
1.
Disconnect heated oxygen sensor 2 harness connector.
2.
Turn ignition switch ON.
3.
Check voltage between HO2S2 terminal 2 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M72, F102
●
Harness connectors E108, M15
●
IPDM E/R harness connector E7
●
15A fuse
●
Harness for open or short between heated oxygen sensor 2 and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK HO2S2 HEATER OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB1908E
Voltage: Battery voltage
PBIA9576J
DTC
Terminals
Bank
ECM
Sensor
P0037, P0038
25
3
1
P0057, P0058
6
3
2
Continuity should exist.
EC-190
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
5.
CHECK HEATED OXYGEN SENSOR 2 HEATER
Refer to
EC-190, "Component Inspection"
OK or NG
OK
>> GO TO 6.
NG
>> Replace malfunctioning heated oxygen sensor 2.
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
NBS000OM
HEATED OXYGEN SENSOR 2 HEATER
1.
Check resistance between HO2S2 terminals as follows.
2.
If NG, replace heated oxygen sensor 2.
CAUTION:
●
Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard sur-
face such as a concrete floor; use a new one.
●
Before installing new oxygen sensor, clean exhaust system
threads using Oxygen Sensor Thread Cleaner tool J-43897-
18 or J-43897-12 and approved anti-seize lubricant.
Removal and Installation
NBS000ON
HEATED OXYGEN SENSOR 2
Refer to
EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST"
.
Terminal No.
Resistance
2 and 3
3.4 - 4.4
Ω
[at 25
°
C (77
°
F)]
1 and 2, 3, 4
∞
Ω
(Continuity should not exist)
4 and 1, 2, 3
PBIB3344E
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
EC-191
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EC
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
PFP:23796
Component Description
NBS000VO
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
NBS000VP
Specification data are reference values.
On Board Diagnosis Logic
NBS000VQ
DTC Confirmation Procedure
NBS000VR
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.
PBIB1842E
MONITOR ITEM
CONDITION
SPECIFICATION
INT/V SOL(B1)
INT/V SOL(B2)
●
Engine: After warming up
●
Shift lever: P or N (A/T), Neutral
(M/T)
●
Air conditioner switch: OFF
●
No load
Idle
0% - 2%
When revving engine up to 2,000 rpm
quickly
Approx. 0% - 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
(The intake valve timing control solenoid
valve circuit is open or shorted.)
●
Intake valve timing control solenoid valve
P0081
0081
(Bank 2)
SEF058Y
EC-192
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
Wiring Diagram
NBS000VS
BANK 1
TBWM0348E
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