Toyota
Nissan Versa
 Sedan Service Manual
Transmission & driveline » Transaxle & transmission (TM)
Fluid cooler & fluid warmer system

FLUID COOLER & FLUID WARMER SYSTEM : System Description

CVT FLUID COOLER SCHEMATIC

CVT FLUID COOLER SCHEMATIC

COMPONENT DESCRIPTION

CVT Oil Warmer

  • The CVT oil warmer (1) is installed on the front part of transaxle assembly.
  • When engine is started while engine and CVT are cold, engine coolant temperature rises more quickly than CVT fluid temperature.

    CVT oil warmer is provided with two circuits for CVT and engine coolant respectively so that warmed engine coolant warms CVT quickly. This helps shorten CVT warming up time, improving fuel economy.

  • A cooling effect is obtained when CVT fluid temperature is high.

CVT Oil Warmer

Heater Thermostat

  • The heater thermostat (1) is installed on the front part of transaxle assembly.
  • The heater thermostat starts opening before the completion of an engine warm-up and fully opens at the completion of the engine warm-up. This allows the transaxle to be warmed up when CVT fluid temperature is lower than coolant temperature under low temperature conditions.

Heater Thermostat

SHIFT LOCK SYSTEM

SHIFT LOCK SYSTEM : System Description

The selector lever cannot be shifted from "P" position to any other position unless the ignition switch is in the ON position and the brake pedal is depressed.

KEY LOCK SYSTEM

KEY LOCK SYSTEM : System Description

  • The key lock mechanism also operates as a shift lock: With the ignition switch turned to ON, selector lever cannot be shifted from "P" position to any other position unless brake pedal is depressed.

    With the key removed, selector lever cannot be shifted from "P" position to any other position.

    The key cannot be removed unless selector lever is placed in "P" position.

  • The shift lock and key lock mechanisms are controlled by the ON-OFF operation of the shift lock solenoid and by the operation of the rotator and slider located inside key cylinder, respectively.
    More about «Transaxle & transmission (TM)»:

    Precautions

    Structure and operation

    Position switch

    Gear oil

    Side oil seal

    Position switch

    Control linkage

    Air breather hose

    5Th main gear assembly

    Transaxle assembly

    Transaxle assembly

    Input shaft and gear

    Mainshaft and gear

    Final drive

    Precautions

    A/T Control system

    A/T Shift lock system

    Transaxle

    A/T control system

    Line pressure control

    Shift change control

    Lock-up control

    Diagnosis description

    Consult function

    TCM

    Diagnosis and repair work flow

    Additional service when replacing TCM

    Additional service when replacing transaxle assembly

    A/T Fluid cooler

    Stall test

    Line pressure test

    U0073 Communication bus a off

    U0100 Lost communication (ECM A)

    U0140 Lost communication (BCM)

    U0155 Lost communication (IPC)

    U0300 Can communication data

    U1000 Can comm circuit

    U1117 Lost communication (ABS)

    P062F EEPROM

    P0705 Transmission range switch A

    P0706 Transmission range sensor A

    P0711 Transmission fluid temperature sensor A

    P0712 Transmission fluid temperature sensor A

    P0713 Transmission fluid temperature sensor A

    P0717 Input speed sensor A

    P0720 Output speed sensor

    P072C Stuck in 1GR

    P072D Stuck in 2GR

    P072E Stuck in 3GR

    P072F Stuck in 4GR

    P0731 1GR Incorrect ratio

    P0732 2GR Incorrect ratio

    P0733 3GR Incorrect ratio

    P0734 4GR Incorrect ratio

    P073E Unable to engage r range

    P073F Unable to engage 1GR

    P0740 Torque converter

    P0743 Torque converter

    P0744 Torque converter

    P074A Unable to engage 2GR

    P074B Unable to engage 3GR

    P074C Unable to engage 4GR

    P0863 TCM Communication

    P0890 TCM

    P0962 Pressure control solenoid A

    P0963 Pressure control solenoid A

    P0973 Shift solenoid A

    P0974 Shift solenoid A

    P0976 Shift solenoid B

    P0977 Shift solenoid B

    P0979 Shift solenoid C

    P0980 Shift solenoid C

    P0982 Shift solenoid D

    P0983 Shift solenoid D

    P2760 Torque converter

    Main power supply and ground circuit

    Overdrive control switch

    O/D OFF indicator lamp

    Shift position indicator circuit

    Shift lock system

    A/T Fluid

    A/T Shift selector

    Control cable

    Key interlock cable

    TCM

    Oil pan

    Output speed sensor

    Differential side oil seal

    Fluid cooler tube

    Transmission assembly

    Service data and specifications (SDS)

    Precautions

    Component parts

    Shift lock system

    Structure and operation

    Fluid cooler & fluid warmer system

    CVT Control system

    Line pressure control

    Shift control

    Lock-up control

    Idle neutral control

    Diagnosis system (TCM)

    TCM

    Diagnosis and repair work flow

    Additional service when replacing TCM

    Additional service when replacing transaxle assembly

    Calibration of G Sensor

    CVT Fluid cooler system

    Stall test

    Line pressure test

    U0073 Communication bus A off

    U0100 Lost communication (ECM A)

    U0140 Lost communication (BCM)

    U0141 Lost communication (BCM A)

    U0155 Lost communication (IPC)

    U0300 Can communication data

    U1000 Can COMM circuit

    U1117 Lost communication (ABS)

    P062F EEPROM

    P0705 Transmission range sensor A

    P0706 Transmission range sensor A

    P0711 Transmission fluid temperature sensor A

    P0712 Transmission fluid temperature sensor A

    P0713 Transmission fluid temperature sensor A

    P0715  Input speed sensor A

    P0720 Output speed sensor

    P0740 Torque converter

    P0743 Torque converter

    P0744 Torque converter

    P0746 Pressure control solenoid A

    P0846 Transmission fluid pressure SEN/SW B

    P0847 Transmission fluid pressure SEN/SW B

    P0848 Transmission fluid pressure SEN/SW B

    P0863 TCM Communication

    P0890 TCM

    P0962 Pressure control solenoid A

    P0963 Pressure control solenoid A

    P0965 Pressure control solenoid B

    P0966 Pressure control solenoid B

    P0967 Pressure control solenoid B

    P0998 Shift solenoid F

    P0999 Shift solenoid F

    P099B Shift solenoid G

    P099C Shift solenoid G

    P1586 G Sensor

    P1588 G Sensor

    P2765 Clutch B speed sensor

    P2857 Clutch A pressure

    P2858 Clutch B pressure

    P2859 Clutch A pressure

    P285A Clutch B pressure

    Main power supply and ground circuit

    Overdrive control switch

    OD OFF indicator lamp

    Shift position indicator circuit

    Shift lock system

    CVT Control system

    CVT Fluid

    CVT Shift selector

    Control cable

    Key interlock cable

    TCM

    Air breather hose

    G Sensor

    Oil pan

    Primary speed sensor

    Secondary speed sensor

    Output speed sensor

    Differential side oil seal

    Water hose

    Fluid cooler hose

    PLUG

    Transmission assembly

    Service data and specifications (SDS)

    Nissan Versa Sedan Service Manual / Transmission & driveline / Transaxle & transmission (TM) / Fluid cooler & fluid warmer system

    Nissan Versa Sedan Service Manual

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