2009 NISSAN LATIO check engine

CONSULT-III
Reference Value in Data Monitor Mode " .
Without CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Change selector lever to “P“, “R”, “N”, “D” and “L” positions to
check voltage between the CVT unit harness connector termi-
nals and ground.
OK or NG OK >> GO TO 6.
NG >> GO TO 2. OK >> GO TO 6.
NG >> GO TO 3. Shift
position Connector E31, E32
Terminal
18 - Ground 22 - Ground 26 - Ground 43 - Ground 44 - Ground
P Battery volt-
age 0 V 0 V 0 V 0 V
R 0 V Battery volt-
age 0 V 0 V 0 V
N 0 V 0 V Battery volt-
age 0 V 0 V
D 0 V 0 V 0 V Battery volt-
age 0 V
L 0 V 0 V 0 V 0 V Battery volt-
age B

DTC P0710 CVT FLUID TEMP
ERATURE SENSOR CIRCUIT
CVT-251
< SERVICE INFORMATION >
[RE0F08B] D
E
F
G H
I
J
K L
M A
B CVT
N
O P
Diagnosis Procedure
INFOID:00000000043056401.
CHECK CVT FLUID TEMP ERATURE SENSOR SIGNAL
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “ATF TEMP SEN”.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminals.
3. Turn ignition switch OFF.
4. Disconnect TCM connector.
5. Check if there is continuity between connector terminal and
ground.
OK or NG OK >> GO TO 5.
NG >> GO TO 2. 2.
CHECK CVT FLUID TEMP ERATURE SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the TCM connector.
3. Check resistance between TCM connector terminals.
OK or NG OK >> GO TO 5.
NG >> GO TO 3. 3.
CHECK CVT FLUID TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector. Item name Condition
Display value
(Approx.)
ATF TEMP SEN When CVT fluid temperature is 20
°C
(68 °F). 2.0 V
When CVT fluid temperature is 80 °C
(176 °F). 1.0 VName Connector Terminal
Temperature
°C ( °F) Voltage
(Approx.)
CVT fluid tem-
perature sen-
sor E32 47 - 42 20 (68) 2.0 V
80 (176) 1.0 V SCIA2027E
Name Connector Terminal
Temperature
°C ( °F) Resistance
(Approx.)
CVT fluid tem-
perature sensor E32 47 - 42 20 (68) 6.5 k
Ω
80 (176) 0.9 k Ω SCIA2510E

CVT-260< SERVICE INFORMATION >
[RE0F08B]
DTC P0720 VEHICLE SPEED SENSOR
CVT (SECONDARY SPEED SENSOR)
Diagnosis Procedure INFOID:00000000043056551.
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 output speed sensor (s econdary speed sensor) by voltage between TCM connec-
tor terminals 10, 19 and 42. Refer to CVT-219, " 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 (s econdary speed sensor) harness connector.
3. Turn ignition switch ON. Item name Condition Display value
VSP SENSOR During driving Approximately matches
the speedometer reading. Item Connector Terminal Data (Approx.)
TCM E31, E32 10 - 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 Name Data (Ap-
prox.)
TCM E32 29 Output speed sensor (Sec-
ondary speed sensor) 570 Hz SCIA2344E

CVT
N
O P
DTC P0725 ENGINE SPEED SIGNAL
Description INFOID:0000000004305656
The engine speed signal is sent from the ECM to the TCM.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004305657
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004305658
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0725 ENGINE SPEED SIG” with CONSULT-III is detected when TCM does not
receive the engine speed signal (input by CAN communication) from ECM.
Possible Cause INFOID:0000000004305659
Harness or connectors
(The ECM to the TCM circuit is open or shorted.)
DTC Confirmation Procedure INFOID:0000000004305660
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 RESU LTS” 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-263, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004305661 CONSULT-III
Function (ENGINE) " .
OK or NG OK >> GO TO 2.
NG >> Check the DTC detected item. Refer to EC-1116, " CONSULT-III Function (ENGINE) " .
CON-
SULT-III Functi
on (TRANSMISSION) " .
OK or NG OK >> GO TO 3.
NG >> Check the DTC detected item. Refer to CVT-230, " CONSULT-III Function (TRANSMISSION) " .
Item name Condition 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

.
OK >> GO TO 4.
NG >> Check ignition signal circuit. Refer to EC-1518, " Component Description " .
DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> GO TO 5. 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 Condition Display value
ENG SPEED SIG Engine running Closely matches the ta-
chometer reading.
ACC PEDAL OPEN Released accelerator
pedal - Fully depressed
accelerator pedal 0.0/8 - 8.0/8

CVT
N
O P
DTC P0730 BELT DAMAGE
Description INFOID:0000000004305662
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 Val ue in Data Monitor Mode INFOID:0000000004305663
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004305664
• This is not an OBD-II self-diagnostic item.
• TCM calculates the actual gear ratio with input speed sensor (primary speed sensor) and output speed sen-
sor (secondary speed sensor).
• Diagnostic trouble code “P0730 BELT DAMG” with CONSUL T-III is detected, when TCM receives an unex-
pected gear ratio signal.
Possible Cause INFOID:0000000004305665
Transaxle assembly
DTC Confirmation Procedure INFOID:0000000004305666
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, 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-265, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004305667DTC Confirmation Procedure " .
Are any DTC displayed? YES - 1>> DTC except for “P0730 BELT DAMG” is displa
yed: Go to Check the DTC detected item. Refer to
CVT-230, " CONSULT-III Function (TRANSMISSION) " .
YES - 2>> DTC for “P0730 BELT DAMG” is displayed: Replace the transaxle assembly. Refer to CVT-354," Removal and Installation " .
NO >> INSPECTION END
Item name Condition Display value (Approx.)
GEAR RATIO During driving 2.56 - 0.43

CVT-268< SERVICE INFORMATION >
[RE0F08B]
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Diagnosis Procedure INFOID:00000000043056741.
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 Condition
Voltage
(Approx.)
Torque con-
verter
clutch sole-
noid valve E31 3 - ground When vehi-
cle cruises
in “D” posi-
tion Lock-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

OK >> GO TO 5.
NG >> GO TO 2. Inspections before Trouble Diagnosis " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace damaged parts. Refer to CVT-219, " Inspections before Trouble Diagnosis " .
Component Inspection " .
• Lock-up select solenoid valve. Refer to CVT-309, " Component Inspection " .
OK or NG OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM AND INPUT SPEED ,
CVT-254 .
OK or NG OK >> GO TO 5.
NG >> Repair or replace damaged parts. DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> GO TO 6. 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 >> 1. Repair or replace damaged parts. 2. Replace the transaxle assembly. Refer to CVT-354, " Removal and Installation " .
Item name Condition Display value
ENG SPEED SIG Eng ine runningClosely matches the ta-
chometer reading.
PRI SPEED SEN During driving (lock-up ON) Approximately matches
the engine speed.