2009 NISSAN LATIO service

CVT
N
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3. Check continuity between TCM connector terminals and primary
speed sensor 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 OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. DTC Confirmation Proce-
dure " .
Is the “ P0715 INPUT SPD SEN/CIRC ” detected again?
YES >> Replace the transaxle assembly. Refer to
CVT-182, " Removal and Installation " .
NO >> Replace TCM. Refer to CVT-12, " Service After Replacing TCM and Transaxle Assembly " .
DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> GO TO 7. 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. Item Connector Terminal Continuity
TCM E32 42 Yes
CVT unit harness connector F46 19
TCM E32 46 Yes
CVT unit harness connector F46 20

CVT
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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. OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. DTC Confirmation Proce-
dure " .
Is “ P0720 VEH SPD SEN/CIR AT ” detected again?
YES >> Replace the transaxle assembly. Refer to
CVT-182, " Removal and Installation " .
NO >> Replace TCM. Refer to CVT-12, " Service After Replacing TCM and Transaxle Assembly " .
6. CHECK HARNESS BETWEEN TCM AND OUTPUT SP EED SENSOR (SECONDARY SPEED SENSOR)

DTC P0745 LINE PRESSURE SOLENOID VALVE
CVT-103
< SERVICE INFORMATION >
[RE0F08A] D
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F
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M A
B CVT
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3. Check resistance between CVT unit harness connector terminal
and ground.
4. If NG, replace the transaxle assembly. Refer to CVT-182," Removal and Installation " .
Solenoid valve Connector Terminal
Resistance (Ap-
prox.)
Pressure control solenoid valve A
(Line pressure solenoid valve) F46 2 - Ground 3 - 9
Ω SCIA4686E

CVT-112< SERVICE INFORMATION >
[RE0F08A]
DTC P0778 PRESSURE CONTROL SOLENO
ID B ELECTRICAL (SEC PRES-
SURE SOLENOID VALVE)
3. Check resistance between CVT unit harness connector terminal and ground.
4. If NG, replace the transaxle assembly. Refer to CVT-182," Removal and Installation " .
Solenoid Valve Connector Terminal
Resistance (Ap-
prox.)
Pressure control sole-
noid valve B (Secondary
pressure solenoid valve) F46 3 - Ground 3 - 9
Ω SCIA4688E

DTC P0840 TRANSMISSION FLUID PR
ESSURE SENSOR A CIRCUIT (SEC
PRESSURE SENSOR)
CVT-115
< SERVICE INFORMATION >
[RE0F08A] D
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B CVT
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Diagnosis Procedure
INFOID:00000000046670081.
CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “SEC HYDR SEN”.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
OK or NG OK >> GO TO 5.
NG >> GO TO 2. 2.
CHECK SENSOR POWER AND SENSOR GROUND
1. Turn ignition switch ON. (Do not start engine)
2. Check voltage between TCM connector terminals.
OK or NG OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN TCM AND CVT UNI T HARNESS CONNECTOR (SENSOR POWER ANDSENSOR GROUND)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit harness connector.
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 Item name Condition Display value (Approx.)
SEC HYDR SEN “N” position idle 1.0 V Name Connector Terminal Condition
Voltage
(Approx.)
Transmission
fluid pressure
sensor A
(Secondary
pressure sen-
sor) E32 37 - Ground “N” position idle 1.0 V SCIA4508E
Item Connector Terminal
Data (Ap-
prox.)
TCM connector E32 46 - 42 5.0 V SCIA2367E
Item Connector Terminal Continuity
TCM E32 42 Yes
CVT unit harness connector F46 19
TCM E32 46 Yes
CVT unit harness connector F46 20 SCIA4681E

Service After Replacing TCM and Transaxle Assembly " .
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK HARNESS BETWEEN TCM AND TRANSMISSI ON FLUID PRESSURE SENSOR A (SECOND-OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 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 >> Replace the transaxle assembly. Refer to
CVT-182, " Removal and Installation " .
NG >> Repair or replace damaged parts. Item Connector Terminal Continuity
TCM E32 37 Yes
CVT unit harness connector F46 23

DTC P0845 TRANSMISSION FLUID PRES
SURE SENSOR B CIRCUIT (PRI
PRESSURE SENSOR)
CVT-121
< SERVICE INFORMATION >
[RE0F08A] D
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G H
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M A
B CVT
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Diagnosis Procedure
INFOID:00000000046670211.
CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “PRI HYDR SEN”.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
OK or NG OK >> GO TO 5.
NG >> GO TO 2. 2.
CHECK SENSOR POWER AND SENSOR GROUND
1. Turn ignition switch ON. (Do not start engine)
2. Check voltage between TCM connector terminals.
OK or NG OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN TCM AND CVT UNI T HARNESS CONNECTOR (SENSOR POWER ANDSENSOR GROUND)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit harness connector.
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. Item name Condition Display value (Approx.)
PRI HYDR SEN “N” position idle 0.7 V Name Connector Terminal Condition
Voltage
(Approx.)
Transmis-
sion fluid
pressure
sensor B
(Primary
pressure
sensor) E32 41 - Ground “N” position idle 0.7 V SCIA4509E
Item Connector Terminal
Data (Ap-
prox.)
TCM connector E32 46 - 42 5.0 V SCIA2367E
Item Connector Terminal Continuity
TCM E32 42 Yes
CVT unit harness connector F46 19
TCM E32 46 Yes
CVT unit harness connector F46 20 SCIA4681E

OK >> Replace TCM. Refer to
CVT-12, " Service After Replacing TCM and Transaxle Assembly " .
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK HARNESS BETWEEN TCM AND TRANSMISSI ON FLUID PRESSURE SENSOR B (PRIMARYOK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors. 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 >> Replace the transaxle assembly. Refer to
CVT-182, " Removal and Installation " .
NG >> Repair or replace damaged parts. Item Connector Terminal Continuity
TCM E32 41 Yes
CVT unit harness connector F46 25