2009 NISSAN LATIO ignition

.
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
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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

DTC P0740 TORQUE CONVERTE
R CLUTCH SOLENOID VALVE
CVT-269
< SERVICE INFORMATION >
[RE0F08B] D
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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. If OK, check continuity between ground and CVT assembly.
6. Reinstall any part removed.
OK or NG OK >> GO TO 4.
NG >> Repair or replace damaged parts. 4.
CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
3. Check resistance between CVT unit harness connector terminal
and ground.
OK or NG OK >> GO TO 5.
NG >> Repair or replace damaged parts. 5.
CHECK DTC
Perform CVT-266, " DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> GO TO 6. 6.
CHECK TCM
1. Check TCM input/output signals. Refer to CVT-228, " TCM Terminal and Reference Value " .
2. If NG, re-check TCM pin terminals for dam age or loose connection with harness connector.
OK or NG OK >>
INSPECTION END
NG >> Repair or replace damaged parts.
Component Inspection INFOID:0000000004305675
TORQUE CONVERTER CLUTCH SOLENOID VALVE 1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector. Item Connector Terminal Continuity
TCM E31 3 Yes
CVT unit harness connec-
tor F46 12 SCIA4683E
Solenoid Valve Connector Terminal
Resistance (Ap-
prox.)
Torque converter clutch sole-
noid valve F46 12 - Ground 3 - 9
Ω SCIA4684E

CVT
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DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
Description INFOID:0000000004305676
• The torque converter clutch solenoid valve is included in the control valve assembly.
• This malfunction is detected when the torque converter clutch does not lock-up as instructed by the TCM.
This is not only caused by electrical malfunction (cir cuits open or shorted), but also by mechanical malfunc-
tion such as control valve sticking, improper solenoid valve operation, etc.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004305677
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004305678
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0744 A/T TCC S/V FNCTN” wit h CONSULT-III is detected under the following
conditions.
- When CVT cannot perform lock-up even if electrical circuit is good.
- When TCM compares difference value with slip revolution and detects an irregularity.
Possible Cause INFOID:0000000004305679
• Torque converter clutch solenoid valve
• Hydraulic control circuit
DTC Confirmation Procedure INFOID:0000000004305680
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. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine and maintain the following condition for at least 30 seconds.
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
[Vehicle speed: Constant speed of more than 40 km/h (25 MPH)]
4. If DTC is detected go to CVT-271, " Diagnosis Procedure " .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis Procedure INFOID:0000000004305681

CVT
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DTC P0745 LINE PRESSURE SOLENOID VALVE
Description INFOID:0000000004305682
• The pressure control solenoid valve A (line pressure solenoid valve) is included in the control valve assem- bly.
• The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pres-
sure to suit the driving condition in response to a signal sent from the TCM.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004305683
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004305684
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0745 L/PRESS SOL/CIRC” with CONSULT-III is detected under the following
conditions.
- TCM detects an improper voltage drop when it tries to operate the solenoid valve.
- When TCM compares target value with monitor value and detects an irregularity.
Possible Cause INFOID:0000000004305685
• Harness or connectors (Solenoid circuit is open or shorted.)
• Pressure control solenoid valve A (Line pressure solenoid valve)
DTC Confirmation Procedure INFOID:0000000004305686
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. Start engine and wait at least 5 seconds.
3. If DTC is detected, go to CVT-275, " Diagnosis Procedure " .
WITH GST
Follow the procedure “WITH CONSULT-III”. Item name Condition Display value (Approx.)
ISOLT2 Release your foot from the accelerator pedal. 0.8 A
Press the accelerator pedal all the way down. 0.0 A

DTC P0745 LINE PRESSURE SOLENOID VALVE
CVT-275
< SERVICE INFORMATION >
[RE0F08B] D
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Diagnosis Procedure
INFOID:00000000043056881.
CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “ISOLT2”.
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 connector terminal and ground.
OK or NG OK >> GO TO 5.
NG >> GO TO 2. 2.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE 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 VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector. Item name Condition Display value (Approx.)
ISOLT2 Release your foot from the
accelerato r pedal. 0.8 A
Press the accelerator ped-
al all the way down. 0.0 AName Connector Terminal Condition
Voltage
(Approx.)
Pressure
control so-
lenoid
valve A
(Line pres-
sure sole-
noid valve) E31 1 - ground Release your foot from
the accelerator pedal. 5.0 - 7.0 V
Press the accelerator
pedal all the way down. 1.0 - 3.0 V SCIA2348E
Solenoid valve Connector Terminal
Resistance (Ap-
prox.)
Pressure control solenoid valve A
(Line pressure solenoid valve) E31 1 - ground 3 - 9
Ω SCIA4685E

CVT-276< SERVICE INFORMATION >
[RE0F08B]
DTC P0745 LINE PRESS
URE SOLENOID VALVE
3. Check resistance between CVT unit harness connector terminal and ground.
OK or NG OK >> GO TO 4.
NG >> Replace the transaxle assembly. Refer to CVT-354," Removal and Installation " .
4. CHECK HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE A (LINE PRES-SURE SOLENOID VALVE)
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector and TCM 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. If OK, check continuity between ground and CVT assembly.
6. 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 DTC
Perform CVT-273, " DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> GO TO 6. 6.
CHECK TCM
1. Check TCM terminals and reference values. Refer to CVT-228, " 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 " .
Component Inspection INFOID:0000000004305689
PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector. Solenoid valve Connector Terminal
Resistance (Ap-
prox.)
Pressure control solenoid valve A
(Line pressure solenoid valve) F46 2 - Ground 3 - 9
Ω SCIA4686E
Item Connector Terminal Continuity
TCM E31 1 Yes
CVT unit harness connector F46 2 SCIA4687E