2008 NISSAN TEANA Service Manual

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Page 1737 of 5121

NISSAN TEANA 2008 Service Manual EC-276
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1572 ASCD BRAKE SWITCH
Is the inspection result normal?
YES >> GO TO 12.
NO >> Replace ASCD brake switch.
7.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

Page 1738 of 5121

NISSAN TEANA 2008 Service Manual P1572 ASCD BRAKE SWITCH
EC-277
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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Component Inspection (ASCD Brake Switch)INFOID:0000000003856756
1.CHECK ASCD BRAKE SWITCH-I
1. Tu

Page 1739 of 5121

NISSAN TEANA 2008 Service Manual EC-278
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1574 ASCD VEHICLE SPEED SENSOR
P1574 ASCD VEHICLE SPEED SENSOR
DescriptionINFOID:0000000003856758
The ECM receives two vehicle speed signals via CAN com

EC-278
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1574 ASCD VEHICLE SPEED SENSOR
P1574 ASCD VEHICLE SPEED SENSOR
DescriptionINFOID:0000000003856758
The ECM receives two vehicle speed signals via CAN communication line. One is sent from combination
meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD con-
trol. Refer to EC-51, "
System Diagram" for ASCD functions.
DTC LogicINFOID:0000000003856759
DTC DETECTION LOGIC
NOTE:
If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-135, "
DTC Logic".
If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer
to EC-234, "
DTC Logic".
If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-240, "
DTC Logic".
If DTC P1574 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC 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 (VDC switch OFF).
2. Drive the vehicle at more than 40 km/h (25 MPH).
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-278, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856760
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM-35, "
Diagnosis Description".
Is the inspection result normal?
YES >> GO TO 2.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1574ASCD vehicle speed
sensorThe difference between the two vehicle speed
signals is out of the specified range. Harness or connectors
(The CAN communication line is open or
shorted.)
Combination meter
ABS actuator and electric unit (control unit)
Wheel sensor
TCM
ECM

Page 1740 of 5121

NISSAN TEANA 2008 Service Manual P1574 ASCD VEHICLE SPEED SENSOR
EC-279
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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NO >> Perform trouble shooting relevant to DTC indicated.
2.CHECK DTC WITH “ABS ACTUATO

Page 1741 of 5121

NISSAN TEANA 2008 Service Manual EC-280
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1700 CVT CONTROL SYSTEM
P1700 CVT CONTROL SYSTEM
DescriptionINFOID:0000000003856761
This DTC is displayed with other DTC regarding TCM. Perform the trou

Page 1742 of 5121

NISSAN TEANA 2008 Service Manual P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
EC-281
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
DescriptionINFOID:0000000

P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
EC-281
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
DescriptionINFOID:0000000003856762
ECM receives primary speed sensor signal from TCM through CAN communication line. ECM uses this signal
for engine control.
DTC LogicINFOID:0000000003856763
DTC DETECTION LOGIC
NOTE:
If DTC P1715 is displayed with DTC U1000, U1001 first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-135, "
DTC Logic".
If DTC P1715 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335. Refer
to EC-218, "
DTC Logic".
If DTC P1715 is displayed with DTC P0340, P0345, first perform the trouble diagnosis for DTC P0340,
P0345. Refer to EC-222, "
DTC Logic".
If DTC P1715 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-240, "
DTC Logic".
If DTC P1715 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC 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.
2. Drive vehicle at a speed of more than 50 km/h (31 MPH) for at least 5 seconds.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-281, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856764
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM-121, "
DTC Index".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble shooting relevant to DTC indicated.
2.REPLACE TCM
Replace TCM. Refer to TM-153, "
Removal and Installation".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1715Input speed sensor
(Primary speed sensor)
(TCM output)Primary speed sensor signal is different
from the theoretical value calculated by
ECM from secondary sensor signal and
engine rpm signal. Harness or connectors
(The CAN communication line is open or short-
ed)
Harness or connectors
(Primary speed sensor circuit is open or short-
ed)
TCM

Page 1743 of 5121

NISSAN TEANA 2008 Service Manual EC-282
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
>> INSPECTION END

Page 1744 of 5121

NISSAN TEANA 2008 Service Manual P1720 VSS
EC-283
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P1720 VSS
DescriptionINFOID:0000000003856765
ECM receives two vehicle speed signals via the CAN communication l

P1720 VSS
EC-283
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P1720 VSS
DescriptionINFOID:0000000003856765
ECM receives two vehicle speed signals via the CAN communication line. One is sent from “ABS actuator and
electric unit (control unit)” via combination meter, and the other is from TCM (Transmission control module).
ECM uses these signals for engine control.
DTC LogicINFOID:0000000003856766
DTC DETECTION LOGIC
NOTE:
If DTC P1720 is displayed with DTC U1000, U1001 first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-135, "
DTC Logic".
If DTC P1720 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC 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.
2. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without depressing the brake
pedal.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-283, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856767
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM-121, "
DTC Index".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble shooting relevant to DTC indicated.
2.CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Refer to BRC-140, "
DTC No. Index".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble shooting relevant to DTC indicated.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1720Vehicle speed sensor
(TCM output)The difference between two vehicle speed
signals is out of the specified range. Harness or connectors
(Secondary speed sensor circuit is open or
shorted.)
Harness or connectors
(Wheel sensor circuit is open or shorted.)
TCM
Secondary speed sensor
ABS actuator and electric unit (control unit)
Wheel sensor
Combination meter

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