2014 NISSAN TEANA Service Manual

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Page 1449 of 4801

NISSAN TEANA 2014 Service Manual
P1572 ASCD BRAKE SWITCHEC-449
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
Is the inspection result normal?
YES >> GO TO 11.
NO >> Perform the trouble diagnosis for power supp

Page 1450 of 4801

NISSAN TEANA 2014 Service Manual
EC-450
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1572 ASCD BRAKE SWITCH
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace brake pedal position switch. Refer to BR-18, "Exploded View"
.

Page 1451 of 4801

NISSAN TEANA 2014 Service Manual
P1572 ASCD BRAKE SWITCHEC-451
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
3. Check the continuity between stop lamp relay terminals as per
the following conditions.
Is the ins

Page 1452 of 4801

NISSAN TEANA 2014 Service Manual
EC-452
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1574 ASCD VEHICL
E SPEED SENSOR
P1574 ASCD VEHICLE SPEED SENSOR
DescriptionINFOID:0000000009462383
The ECM receives two vehicle speed sensor signals via CAN

EC-452
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1574 ASCD VEHICL
E SPEED SENSOR
P1574 ASCD VEHICLE SPEED SENSOR
DescriptionINFOID:0000000009462383
The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from combina-
tion meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD
control. Refer to EC-63, "AUTOMATIC SPEED CONTROL DE VICE (ASCD) : System Description"
for ASCD
functions.
DTC LogicINFOID:0000000009462384
DTC DETECTION LOGIC
NOTE:
• If DTC P1574 is displayed with DTC U1001, first pe rform the trouble diagnosis for DTC U1001. Refer
to EC-208, "DTC Logic"
.
• If DTC P1574 is displayed with DTC P0500, first pe rform the trouble diagnosis for DTC P0500. Refer
to EC-380, "DTC Logic"
•If DTC P1574 is displayed with DTC P0603, P0604, P0605, P0606, P0607, P060A, and P060B, first per-
form the trouble diagnosis fo r DTC P0603, P0604, P0605, P0606, P0607, P060A, and P060B. Refer to
EC-404, "DTC Logic"
.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
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 wheel s 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 >> Proceed to EC-452, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462385
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM-43, "CONSULT Function"
.
Is DTC detected?
NO >> GO TO 2.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P1574 ASCD VHL SPD SEN
(ASCD VHL SPD SEN) ECM detects a difference between two
vehicle speed signals is out of the speci-
fied range. • Harness or connectors
(CAN communication line is open or shorted.)
• ABS actuator and electric unit (control unit)
•TCM
•ECM
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1453 of 4801

NISSAN TEANA 2014 Service Manual
P1574 ASCD VEHICLE SPEED SENSOREC-453
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
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K L
M A
EC
NP
O
YES >> Perform trouble shooting relevant to DTC indicated.
2.CHECK DTC WITH “ABS ACTUATOR A

Page 1454 of 4801

NISSAN TEANA 2014 Service Manual
EC-454
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1715 INPUT SPEED SENSOR
P1715 INPUT SPEED SENSOR
DescriptionINFOID:0000000009462386
ECM receives input speed sensor signal from TCM thr
ough CAN communicatio

EC-454
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1715 INPUT SPEED SENSOR
P1715 INPUT SPEED SENSOR
DescriptionINFOID:0000000009462386
ECM receives input speed sensor signal from TCM thr
ough CAN communication line. ECM uses this signal for
engine control.
DTC LogicINFOID:0000000009462387
DTC DETECTION LOGIC
NOTE:
• If DTC P1715 is displayed with DTC UXXXX, first perform the tr ouble diagnosis for DTC UXXXX.
• If DTC P1715 is displayed with DTC P0335, first pe rform the trouble diagnosis for DTC P0335. Refer
to EC-326, "DTC Logic"
.
• If DTC P1715 is displayed with DTC P0340, first pe rform the trouble diagnosis for DTC P0340. Refer
to EC-329, "DTC Logic"
.
• If DTC P1715 is displayed with DTC P0603, P0604, P0605, P0606, P0607, P060A, and P060B, first per-
form the trouble diagnosis fo r DTC P0603, P0604, P0605, P0606, P0607, P060A, and P060B. Refer to
EC-404, "DTC Logic"
.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and drive the vehicle at more t han 50 km/h (31 MPH) for at least 5 seconds.
CAUTION:
Always drive vehicle at a safe speed.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-454, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462388
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM-43, "CONSULT Function"
.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble shooting relevant to DTC indicated.
2.REPLACE TCM
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P1715 IN PULY SPEED
(IN PULY SPEED) Input speed sensor signal is different from
the theoretical value calculated by ECM
from output speed sensor signal and en-
gine rpm signal. • Harness or connectors
(The CAN communication line is open or
shorted)
• Harness or connectors
(Input speed sensor circuit is open or
shorted)
•TCM
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1455 of 4801

NISSAN TEANA 2014 Service Manual
P1715 INPUT SPEED SENSOREC-455
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
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G H
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EC
NP
O
Replace TCM. Refer to
TM-183, "Removal and Installation".
>> INSPECTION END
Revision: November 2013

Page 1456 of 4801

NISSAN TEANA 2014 Service Manual
EC-456
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1800 INTAKE MANIFOLD TUNING VALVE
P1800 INTAKE MANIFOLD TUNING VALVE
DTC LogicINFOID:0000000009462389
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.COND

EC-456
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1800 INTAKE MANIFOLD TUNING VALVE
P1800 INTAKE MANIFOLD TUNING VALVE
DTC LogicINFOID:0000000009462389
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confi rm battery voltage is more than 11 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and warm it up to the normal operating temperature. [more than 60 °C(140 °F)]
2. Let it idle for at least 10 sec onds. (engine speed: less than 1,000 rpm)
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-456, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462390
1.CHECK INTAKE MANIFOLD TUNI NG VALVE MOTOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK INTAKE MANIFOLD TUNING VALVE MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harnes s connector and IPDM E/R harness connector.
DTC No.CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P1800 VIAS S/V-1
(VIAS S/V-1) An excessively low or high voltage signal
is sent to ECM through the intake manifold
tuning valve. • Harness or connectors
(The solenoid valve 1 circuit is open or
shorted.)
• Intake manifold tuning valve
ECM
Vo l ta g e
+-
Connector Terminal Connector Terminal
F14
*1
F91*26 E10*1
E31*2128 Battery voltage
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

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