2008 NISSAN TEANA Service Manual

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Page 1777 of 5121

NISSAN TEANA 2008 Service Manual EC-316
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P2138 APP SENSOR
Crankshaft position sensor (POS) (Refer to EC-221, "Component Inspection".)
Refrigerant pressure sensor (Refer to EC-348, "
Diagnosi

Page 1778 of 5121

NISSAN TEANA 2008 Service Manual P2138 APP SENSOR
EC-317
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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3. Check the voltage between ECM harness connector terminals under the following conditions.
Is the insp

Page 1779 of 5121

NISSAN TEANA 2008 Service Manual EC-318
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P2A00, P2A03 A/F SENSOR 1
P2A00, P2A03 A/F SENSOR 1
DescriptionINFOID:0000000003856817
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit curre

EC-318
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P2A00, P2A03 A/F SENSOR 1
P2A00, P2A03 A/F SENSOR 1
DescriptionINFOID:0000000003856817
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In addition, a heater is integrated in the
sensor to ensure the required operating temperature of about 800°C
(1,472°F).
DTC LogicINFOID:0000000003856818
DTC DETECTION LOGIC
To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored so it will
not shift to LEAN side or RICH side.
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. Clear the mixture ratio self-learning value. Refer to EC-18, "
MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Special Repair Requirement".
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Start engine and keep the engine speed between 3,500 and 4,000 rpm for 1 minute under no load.
JMBIA0112GB
PBIB3354E
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P2A00Air fuel ratio (A/F) sensor 1
(bank 1) circuit range/per-
formance The output voltage computed by ECM from the
A/F sensor 1 signal shifts to the lean side for a
specified period.
The A/F signal computed by ECM from the A/F
sensor 1 signal shifts to the rich side for a spec-
ified period. A/F sensor 1
A/F sensor 1 heater
Fuel pressure
Fuel injector
Intake air leaks P2A03Air fuel ratio (A/F) sensor 1
(bank 2) circuit range/per-
formance

Page 1780 of 5121

NISSAN TEANA 2008 Service Manual P2A00, P2A03 A/F SENSOR 1
EC-319
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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6. Let engine idle for 1 minute.
7. Keep engine speed between 2,500 and 3,000 rpm for 20 minute

Page 1781 of 5121

NISSAN TEANA 2008 Service Manual EC-320
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P2A00, P2A03 A/F SENSOR 1
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
IPDM E/R ha

Page 1782 of 5121

NISSAN TEANA 2008 Service Manual ASCD BRAKE SWITCH
EC-321
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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ASCD BRAKE SWITCH
DescriptionINFOID:0000000003858142
When the brake pedal is depressed, ASCD brake swit

Page 1783 of 5121

NISSAN TEANA 2008 Service Manual EC-322
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
ASCD BRAKE SWITCH
3.CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3.

Page 1784 of 5121

NISSAN TEANA 2008 Service Manual ASCD INDICATOR
EC-323
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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ASCD INDICATOR
DescriptionINFOID:0000000003856824
ASCD indicator lamp illuminates to indicate ASCD operati

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