2010 NISSAN LATIO display

CVT-74
< SERVICE INFORMATION >[RE0F08B]
P0715 INPUT SPEED SENSOR A
Diagnosis Procedure
INFOID:0000000005397838
1.CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONI TOR” 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 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 UNI T HARNESS CONNECTOR (SENSOR POWER AND
SENSOR GROUND)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and primary speed sensor harness connector.
Item nameConditionDisplay value
PRI SPEED SEN During driving (lock-up
ON)Approximately matches
the engine speed.
Item Connector
TerminalData (Approx.)
TCM E32 10, 19 - 42Battery voltage
Name Condition
Primary speed sen-
sor 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 38 Primary speed sensor 1250 Hz
AWDIA0644GB
Revision: January 20102010 Versa

CVT-76
< SERVICE INFORMATION >[RE0F08B]
P0720 OUTPUT SPEED SENSOR
P0720 OUTPUT SPEED SENSOR
DescriptionINFOID:0000000005397839
The 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:0000000005397840
Remarks: Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000005397841
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0720” with CONSULT-III is det ected TCM does not receive the proper signal from
the sensor.
Possible CauseINFOID:0000000005397842
• Harness or connectors (Sensor circuit is open or shorted.)
• Secondary speed sensor
DTC Confirmation ProcedureINFOID:0000000005397843
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays 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 MONI TOR” 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-78, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value
VSP SENSOR During driving Approximately matches the spee dometer reading.
Revision: January 20102010 Versa

CVT-78
< SERVICE INFORMATION >[RE0F08B]
P0720 OUTPUT SPEED SENSOR
Diagnosis Procedure
INFOID:0000000005397845
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONI TOR” 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 secondary speed sensor by voltage between TCM connector terminals 10, 19 and 42. Refer to CVT-37, "
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 secondary speed sensor harness connector.
3. Turn ignition switch ON.
Item name ConditionDisplay value
VSP SENSOR During drivingApproximately matches
the speedometer reading.
Item Connector
Terminal Data (Approx.)
TCM E31, E32 10 - 42
Battery voltage
19 - 42
Name Condition
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 29 Secondary speed sensor 570 Hz
SCIA2344E
Revision: January 20102010 Versa

P0725 ENGINE SPEEDCVT-81
< SERVICE INFORMATION > [RE0F08B]
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CVT
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P0725 ENGINE SPEED
DescriptionINFOID:0000000005397846
The engine speed signal is sent from the ECM to the TCM.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397847
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397848
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0725” with CONSULT-III is detected when TCM does not receive the engine
speed signal (input by CAN communication) from ECM.
Possible CauseINFOID:0000000005397849
Harness or connectors
(The ECM to the TCM circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005397850
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 MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Start engine and maintain the following conditions for at least 10 consecutive seconds. PRI SPEED SEN: More than 1000 rpm
3. If DTC is detected, go to CVT-81, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005397851
1. CHECK DTC WITH ECM
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “ENGINE” with CONSULT-III. Refer to EC-612, "
CONSULT-III
Function (ENGINE)".
OK or NG
OK >> GO TO 2.
NG >> Check the DTC detected item. Refer to EC-612, "
CONSULT-III Function (ENGINE)".
2. CHECK DTC WITH TCM
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “TRA NSMISSION” with CONSULT-III. Refer to CVT-48, "
CON-
SULT-III Function (TRANSMISSION)".
OK or NG
OK >> GO TO 3.
NG >> Check the DTC detected item. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)".
Item nameCondition Display value
ENG SPEED SIG Engine running Closely matches the tachometer reading.
ACC PEDAL OPEN Released accelerator pedal - Fully depressed accel-
erator pedal 0.0/8 - 8.0/8
Revision: January 20102010 Versa

CVT-82
< SERVICE INFORMATION >[RE0F08B]
P0725 ENGINE SPEED
• If DTC of CAN communication line is detected, go to
CVT-56.
3. CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
3. While monitoring “ENG SPEED SIG”, check for engine speed change corresponding to “ACC PEDAL
OPEN”.
OK or NG
OK >> GO TO 4.
NG >> Check ignition signal circuit. Refer to EC-1019, "
Component Description".
4. CHECK DTC
Perform CVT-81, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.
5. CHECK TCM
1. Check TCM input/output signals. Refer to CVT-46, "
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 name ConditionDisplay value
ENG SPEED SIG Engine running Closely matches the ta-
chometer reading.
ACC PEDAL OPEN Released accelerator
pedal - Fully depressed
accelerator pedal0.0/8 - 8.0/8
Revision: January 20102010 Versa

P0730 INCORRECT GEAR RATIOCVT-83
< SERVICE INFORMATION > [RE0F08B]
D
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CVT
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P0730 INCORRECT GEAR RATIO
DescriptionINFOID:0000000005397852
TCM selects the gear ratio using the engine load (throttle position), the primary pulley revolution speed, and
the secondary pulley revolution speed as input signal. T hen it changes the operating pressure of the primary
pulley and the secondary pulley and changes the groove width of the pulley.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005397853
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397854
• This is not an OBD-II self-diagnostic item.
• TCM calculates the actual gear ratio with primary speed sensor and secondary speed sensor.
• Diagnostic trouble code “P0730” with CONSULT-III is detected, when TCM receives an unexpected gear
ratio signal.
Possible CauseINFOID:0000000005397855
Transaxle assembly
DTC Confirmation ProcedureINFOID:0000000005397856
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, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (c ool down the fluid)
3. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
4. Start engine and maintain the following conditions for at least 30 consecutive seconds. TEST START FROM 0 km/h (0 MPH)
CONSTANT ACCELERATION: Keep 30 sec or more
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
5. If DTC is detected, go to CVT-83, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005397857
1.CHECK DTC
Perform CVT-83, "
DTC Confirmation Procedure".
Are any DTC displayed?
YES - 1>> DTC except for “P0730” is displayed: Go to Check the DTC detected item. Refer to CVT-48,
"CONSULT-III Function (TRANSMISSION)".
YES - 2>> DTC for “P0730” is displayed: Replace the transaxle assembly. Refer to CVT-173, "
Removal and
Installation".
NO >> INSPECTION END
Item name Condition Display value (Approx.)
GEAR RATIO During driving 2.56 - 0.43
Revision: January 20102010 Versa

CVT-84
< SERVICE INFORMATION >[RE0F08B]
P0740 TORQUE CONVERTER
P0740 TORQUE CONVERTER
DescriptionINFOID:0000000005397858
• The torque converter clutch solenoid valve is included in the control valve assembly.
• The torque converter clutch solenoid valve is activated by the TCM in response to signals sent from the vehi-
cle speed and accelerator pedal position sensors. Lock-up piston operation will then be controlled.
• Lock-up operation, however, is prohibited when CVT fluid temperature is too low.
• When the accelerator pedal is depressed (less than 2.0/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005397859
Remarks: Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000005397860
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0740” with CONSULT-III is detected under the following conditions.
- TCM detects an improper voltage drop when it tries to operate the solenoid valve.
Possible CauseINFOID:0000000005397861
• Torque converter clutch solenoid valve
• Harness or connectors (Solenoid circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005397862
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays 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. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III and wait at least 10 consecutive
seconds.
3. If DTC is detected, go to CVT-86, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
ISOLT1 Lock-up OFF
0.0 A
Lock-up ON 0.7 A
Revision: January 20102010 Versa

CVT-86
< SERVICE INFORMATION >[RE0F08B]
P0740 TORQUE CONVERTER
Diagnosis Procedure
INFOID:0000000005397864
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “ISOLT1”.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
3. Turn ignition switch OFF.
4. Disconnect TCM connector.
5. Check if there is continuity between the connector terminal and
ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN TCM AND TORQ UE CONVERTER CLUTCH SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit harness connector.
Item name Condition Display value (Approx.)
ISOLT1 Lock-up OFF
0.0 A
Lock-up ON 0.7 A
Name Connector Terminal ConditionVoltage
(Approx.)
To r q u e c o n -
verter
clutch sole-
noid valve E31 3 - ground When vehi-
cle cruises
in “D” posi-
tionLock-up ON 6.0 V
Lock-up OFF 1.0 V
SCIA7954E
Solenoid valve Connector Terminal Resistance
(Approx.)
Torque converter clutch so-
lenoid valve E31 3 - Ground 3 - 9 Ω
SCIA1970E
Revision: January 20102010 Versa