2008 INFINITI FX35 Service Manual

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Page 1977 of 3924

INFINITI FX35 2008 Service Manual
DTC P0011, P0021 IVT CONTROL
EC-737
< SERVICE INFORMATION > [VK45DE]
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Refer to
EC-717.
>> INSPECTION END
Component InspectionINFOID:0000000001326560
INTAKE VALVE TIMIN

Page 1978 of 3924

INFINITI FX35 2008 Service Manual
EC-738
< SERVICE INFORMATION >[VK45DE]
DTC P0011, P0021 IVT CONTROL
4. Provide 12V DC between intake valve timing control solenoid
valve terminals and then interrupt it. Make sure that the plunger
mo

Page 1979 of 3924

INFINITI FX35 2008 Service Manual
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-739
< SERVICE INFORMATION > [VK45DE]
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DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
DescriptionINFOID:0000000

DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-739
< SERVICE INFORMATION > [VK45DE]
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DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
DescriptionINFOID:0000000001326562
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the A/F
sensor 1 heater corresponding to the engine operating
condition to keep the temperature of A/F sensor 1 element at the specified range.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001326563
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001326564
DTC Confirmation ProcedureINFOID:0000000001326565
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confi rm that battery voltage is between 10.5V and 16V at
idle.
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-743, "
Diagnosis Procedure".
Sensor Input Signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS) Engine speed
Air fuel ratio (A/F) sensor 1
heater controlAir fuel ratio (A/F) sensor 1
heater
Mass air flow sensor Amount of intake air
MONITOR ITEM CONDITION SPECIFICATION
A/F S1 HTR (B1)
A/F S1 HTR (B2) Engine: After warming up, idle the engine 0 - 100%
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0031
0031
(Bank 1) Air fuel ratio (A/F) sensor
1 heater control circuit low The current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the A/F sensor 1 heater.) Harness or connectors
(The A/F sensor 1 heater circuit is
open or shorted.)
A/F sensor 1 heater
P0051
0051
(Bank 2)
P0032
0032
(Bank 1)
Air fuel ratio (A/F) sensor
1 heater control circuit
high The current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the A/F sensor 1 heater.) Harness or connectors
(The A/F sensor 1 heater circuit is
shorted.)
A/F sensor 1 heater
P0052
0052
(Bank 2)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 1980 of 3924

INFINITI FX35 2008 Service Manual
EC-740
< SERVICE INFORMATION >[VK45DE]
DTC P0031, P0032,
P0051, P0052 A/F SENSOR 1 HEATER
Wiring Diagram
INFOID:0000000001326566
BANK 1
Specification data are reference values and are measured betwe

Page 1981 of 3924

INFINITI FX35 2008 Service Manual
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-741
< SERVICE INFORMATION > [VK45DE]
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Do not use ECM ground terminals wh
en measuring input/output voltage. Doing

Page 1982 of 3924

INFINITI FX35 2008 Service Manual
EC-742
< SERVICE INFORMATION >[VK45DE]
DTC P0031, P0032,
P0051, P0052 A/F SENSOR 1 HEATER
BANK 2
Specification data are reference values and are measured between each terminal and ground.
Pulse sign

Page 1983 of 3924

INFINITI FX35 2008 Service Manual
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-743
< SERVICE INFORMATION > [VK45DE]
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: Average voltage for pulse signal (Actual pulse signal can be confirmed by

Page 1984 of 3924

INFINITI FX35 2008 Service Manual
EC-744
< SERVICE INFORMATION >[VK45DE]
DTC P0031, P0032,
P0051, P0052 A/F SENSOR 1 HEATER
3. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-III or tester.
OK or NG
OK >> GO TO

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