2008 NISSAN LATIO service

CVT-76
< SERVICE INFORMATION >
DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)
DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)
DescriptionINFOID:0000000001703505
• The input speed sensor (primary speed sensor) is included in the control valve assembly.
• The input speed sensor (primary speed sensor) detects the primary pulley revolution speed and sends a sig-
nal to the TCM.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001703506
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001703507
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0715 INPUT SPD SEN/CIRC” with CONSULT-III is detected when TCM does not
receive the proper signal from the sensor.
Possible CauseINFOID:0000000001703508
• Harness or connectors
(Sensor circuit is open or shorted.)
• Input speed sensor (Primary speed sensor)
DTC Confirmation ProcedureINFOID:0000000001703509
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Start engine and maintain the following conditions for at least 5 consecutive seconds.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
ENG SPEED: 450 rpm or more
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
3. If DTC is detected, go to CVT-78, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value
ENG SPEED SIG Engine running Closely matches the tachometer reading.
PRI SPEED SEN During driving (lock-up ON) Approximately matches the engine speed.

DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)
CVT-77
< SERVICE INFORMATION >
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Wiring Diagram - CVT - PRSCVTINFOID:0000000001703510
TCM TERMINALS AND REFERENCE VALUES
Refer to CVT-45, "TCM Terminal and Reference Value".
BCWA0672E

CVT-78
< SERVICE INFORMATION >
DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)
Diagnosis Procedure
INFOID:0000000001703511
1.CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “PRI SPEED SEN”.
OK or NG
OK >> GO TO 6.
NG >> GO TO 2.
2.CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
1. Start engine.
2. Check voltage between TCM connector terminals.
3. Check the pulse with CONSULT-III or oscilloscope, when vehi-
cle cruises.
OK or NG
OK >> GO TO 6.
NG - 1 >> Battery voltage is not supplied: GO TO 3.
NG - 2 >> Battery voltage is supplied, but there is a malfunction in
the frequency: GO TO 4.
3. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND
SENSOR GROUND)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit harness connector.
Item name Condition Display value
PRI SPEED SENDuring driving (lock-up
ON)Approximately matches
the engine speed.
Item Connector Terminal Data (Approx.)
TCM E32 46 - 42 5.0 V
Name Condition
Input speed sensor
(Primary speed
sensor)When running at 20 km/h (12 MPH) in “L” position with the
closed throttle position signal OFF, use the CONSULT-III
pulse frequency measuring function.
CAUTION:
Connect the data link connector to the vehicle-side diag-
nosis connector.
Item Connector Terminal NameData (Ap-
prox.)
TCM E32 38Input speed sensor (Primary
speed sensor)1000 Hz
SCIA1915E

DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI SPEED SENSOR)
CVT-79
< SERVICE INFORMATION >
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3. Check continuity between TCM connector terminals and CVT
unit harness connector terminals.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR [INPUT SPEED SENSOR
(PRIMARY SPEED SENSOR)]
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit harness connector.
3. Check continuity between TCM connector terminal and CVT unit
harness connector terminal.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
5. CHECK THE TCM SHORT
Replace same type TCM, perform self-diagnosis check. Erase self-diagnostic results and then drive the vehi-
cle [10 km/h (6 MPH) or more], perform self-diagnosis check. Refer to CVT-76, "
DTC Confirmation Procedure"
.
Is the
“P0715 INPUT SPD SEN/CIRC” detected again?
YES >> Replace the transaxle assembly. Refer to CVT-178, "Removal and Installation" .
NO >> Replace TCM. Refer to CVT-8, "
Service After Replacing TCM and Transaxle Assembly" .
6.CHECK DTC
Perform CVT-76, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.CHECK TCM
1. Check TCM input/output signals. Refer to CVT-45, "
TCM Terminal and Reference Value" .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Item Connector Terminal Continuity
TCM E32 42
Ye s
CVT unit harness connector F46 19
TCM E32 46
Ye s
CVT unit harness connector F46 20
SCIA4681E
Item Connector Terminal Continuity
TCM E32 38
Ye s
CVT unit harness connector F46 22
SCIA4682E

CVT-80
< SERVICE INFORMATION >
DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)
DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SEN-
SOR)
DescriptionINFOID:0000000001703512
The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)] detects the revolution of the
CVT output shaft and emits a pulse signal. The pulse signal is sent to the TCM, which converts it into vehicle
speed.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001703513
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001703514
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0720 VEH SPD SEN/CIR AT” with CONSULT-III is detected TCM does not
receive the proper signal from the sensor.
Possible CauseINFOID:0000000001703515
• Harness or connectors
(Sensor circuit is open or shorted.)
• Output speed sensor (Secondary speed sensor)
DTC Confirmation ProcedureINFOID:0000000001703516
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Start engine and maintain the following conditions for at least 12 consecutive seconds.
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
3. If DTC is detected, go to CVT-82, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value
VSP SENSOR During driving Approximately matches the speedometer reading.

DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)
CVT-81
< SERVICE INFORMATION >
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Wiring Diagram - CVT - SESCVTINFOID:0000000001703517
TCM TERMINALS AND REFERENCE VALUES
Refer to CVT-45, "TCM Terminal and Reference Value" .
BCWA0673E

CVT-82
< SERVICE INFORMATION >
DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)
Diagnosis Procedure
INFOID:0000000001703518
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “VSP SENSOR”.
OK or NG
OK >> GO TO 8.
NG >> GO TO 2.
2. CHECK SECONDARY SPEED SENSOR
With CONSULT-III
1. Start engine.
2. Check power supply to output speed sensor (secondary speed sensor) by voltage between TCM connec-
tor terminals 10, 19 and 42. Refer to CVT-36, "
Circuit Diagram" .
3. If OK, check the pulse when vehicle cruises.
OK or NG
OK >> GO TO 8.
NG >> GO TO 3.
3. CHECK POWER AND SENSOR GROUND
1. Turn ignition switch OFF.
2. Disconnect the output speed sensor (secondary speed sensor) harness connector.
3. Turn ignition switch ON.
Item name Condition Display value
VSP SENSOR During drivingApproximately matches
the speedometer reading.
Item Connector Terminal Data (Approx.)
TCM E31, E3210 - 42
Battery voltage
19 - 42
Name Condition
Output speed sen-
sor (Secondary
speed sensor)When running at 20 km/h (12 MPH) in “D” position, use the
CONSULT-III pulse frequency measuring function.
CAUTION:
Connect the data link connector to the vehicle-side diag-
nosis connector.
Item Connector Terminal NameData (Ap-
prox.)
TCM E32 29Output speed sensor (Sec-
ondary speed sensor)570 Hz
SCIA2344E

DTC P0720 VEHICLE SPEED SENSOR CVT (SECONDARY SPEED SENSOR)
CVT-83
< SERVICE INFORMATION >
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4. Check voltage between output speed sensor (secondary speed
sensor) harness connector terminals.
5. Check voltage between output speed sensor (secondary speed
sensor) harness connector terminal and ground.
6. If OK, check harness for short to ground and short to power.
7. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG - 1 >> Battery voltage is not supplied between terminals 1 and 3, terminals 1 and ground.: GO TO 6.
NG - 2 >> Battery voltage is not supplied between terminals 1 and 3 only.: GO TO 7.
4. CHECK HARNESS BETWEEN TCM AND OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and output speed sensor (secondary speed sensor) harness connector.
3. Check continuity between TCM connector terminal and output
speed sensor (secondary speed sensor) harness connector ter-
minal.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK THE TCM SHORT
Replace same type TCM, perform self-diagnosis check. Erase self-diagnostic results and them drive the vehi-
cle [more than 40 km/h (25 MPH)], perform self-diagnosis check. Refer to CVT-80, "
DTC Confirmation Proce-
dure" .
Is
“P0720 VEH SPD SEN/CIR AT” detected again?
YES >> Replace the transaxle assembly. Refer to CVT-178, "Removal and Installation" .
NO >> Replace TCM. Refer to CVT-8, "
Service After Replacing TCM and Transaxle Assembly" .
6. CHECK HARNESS BETWEEN TCM AND OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR)
(POWER)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and output speed sensor (secondary speed sensor) harness connector.
Item Connector TerminalData (Ap-
prox.)
Output speed sensor (Sec-
ondary speed sensor)F48 3 - 1 Battery volt-
age
SCIA2345E
Item Connector TerminalData (Ap-
prox.)
Output speed sensor (Sec-
ondary speed sensor)F48 3 - groundBattery volt-
age
SCIA2346E
Item Connector Terminal Continuity
TCM E32 29
Ye s
Output speed sensor (Sec-
ondary speed sensor)F48 2
SCIA1967E