2008 NISSAN TEANA Service Manual

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Page 1601 of 5121

NISSAN TEANA 2008 Service Manual EC-140
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
DescriptionINFOID:0000000003856515
SYSTEM DESCRIPTION
The E

EC-140
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
DescriptionINFOID:0000000003856515
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.
DTC LogicINFOID:0000000003856516
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-140, "Diagnosis Procedure".
NG >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856517
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E38. Refer to Ground Inspection in GI-35, "
Intermittent Incident".
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
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0031Air fuel ratio (A/F) sensor
1 heater (bank 1) control
circuit lowThe 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
P0032Air fuel ratio (A/F) sensor
1 heater (bank 1) control
circuit highThe 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
P0051Air fuel ratio (A/F) sensor
1 heater (bank 2) control
circuit lowThe 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
P0052Air fuel ratio (A/F) sensor
1 heater (bank 2) control
circuit highThe 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

Page 1602 of 5121

NISSAN TEANA 2008 Service Manual P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-141
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace g

Page 1603 of 5121

NISSAN TEANA 2008 Service Manual EC-142
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
7.CHECK INTERMITTENT INCIDENT
Perform GI-35, "
Intermittent Incident".
>> INSPECTION END
Component Inspect

Page 1604 of 5121

NISSAN TEANA 2008 Service Manual P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-143
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P0037, P0038, P0057, P0058 HO2S2 HEATER
DescriptionINFOID:0000000003856519
SYSTEM

P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-143
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P0037, P0038, P0057, P0058 HO2S2 HEATER
DescriptionINFOID:0000000003856519
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
DTC LogicINFOID:0000000003856520
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5 V and 16 V at
idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
Sensor Input signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)Engine speed
Heated oxygen sensor 2
heater controlHeated oxygen sensor 2 heater
Engine coolant temperature sensor Engine coolant temperature
Mass air flow sensor Amount of intake air
Engine speed Heated oxygen sensor 2 heater
Above 3,600 rpmOFF
Below 3,600 rpm after the following conditions are met.
Engine: After warming up
Keeping the engine speed between 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute under no loadON
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0037Heated oxygen sensor 2
heater (bank 1) control
circuit lowThe current amperage in the heated oxygen sensor
2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.) Harness or connectors
(The heated oxygen sensor 2 heater
circuit is open or shorted.)
Heated oxygen sensor 2 heater
P0038Heated oxygen sensor 2
heater (bank 1) control
circuit highThe current amperage in the heated oxygen sensor
2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.) Harness or connectors
(The heated oxygen sensor 2 heater
circuit is shorted.)
Heated oxygen sensor 2 heater
P0057Heated oxygen sensor 2
heater (bank 2) control
circuit lowThe current amperage in the heated oxygen sensor
2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.) Harness or connectors
(The heated oxygen sensor 2 heater
circuit is open or shorted.)
Heated oxygen sensor 2 heater
P0058Heated oxygen sensor 2
heater (bank 2) control
circuit highThe current amperage in the heated oxygen sensor
2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.) Harness or connectors
(The heated oxygen sensor 2 heater
circuit is shorted.)
Heated oxygen sensor 2 heater

Page 1605 of 5121

NISSAN TEANA 2008 Service Manual EC-144
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0037, P0038, P0057, P0058 HO2S2 HEATER
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Start engine and warm it up to

Page 1606 of 5121

NISSAN TEANA 2008 Service Manual P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-145
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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NO >> Repair open circuit, short to ground or short to power in harness or connec

Page 1607 of 5121

NISSAN TEANA 2008 Service Manual EC-146
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0075, P0081 IVT CONTROL SOLENOID VALVE
P0075, P0081 IVT CONTROL SOLENOID VALVE
DescriptionINFOID:0000000003856523
Intake valve timing control solenoid v

EC-146
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0075, P0081 IVT CONTROL SOLENOID VALVE
P0075, P0081 IVT CONTROL SOLENOID VALVE
DescriptionINFOID:0000000003856523
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.
DTC LogicINFOID:0000000003856524
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-146, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856525
1.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake valve timing control solenoid valve harness connector.
3. Turn ignition switch ON.
4. Check the voltage between intake valve timing (IVT) control solenoid valve harness connector and ground
with CONSULT-III or tester.
Is the inspection result normal?
YES >> GO TO 2.
PBIB1842E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0075Intake valve timing control so-
lenoid valve (bank 1) circuitAn 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 P0081Intake valve timing control so-
lenoid valve (bank 2) circuit
DTCIVT control solenoid valve
Ground Voltage
Bank Connector Terminal
P0075 1 F81 2
Ground Battery voltage
P0081 2 F82 2

Page 1608 of 5121

NISSAN TEANA 2008 Service Manual P0075, P0081 IVT CONTROL SOLENOID VALVE
EC-147
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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EC
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NO >> Repair open circuit, short to ground or short to power in harness or connec

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