Nissan Versa Sedan Service ManualTransmission & driveline » Transaxle & transmission (TM)
Idle neutral control
Idle neutral control
IDLE NEUTRAL CONTROL : System Description
SYSTEM DIAGRAM
DESCRIPTION
If a driver has no intention of starting the vehicle in D position, TCM operates the low brake solenoid valve and controls the oil pressure of the low brake to be low pressure. Therefore, the low brake is in the release (slip) status and the power transmission route of transaxle is the same status as the N position. In this way, the transaxle is in idling status and load to the engine can be reduced to improve fuel economy.
NOTE: Provides idle neutral control when stop/start operation is not performed.
Idle Neutral Control Start Condition
Idle neutral control is started when all of the following conditions are fulfilled. However, during idle neutral control, idle neutral control is stopped when any of the following conditions is not met or idle neutral control continues 30 seconds.
Driving environment : Flat road or road with mild gradient
Selector lever position : "D" position
Vehicle speed : 0 km/h (0 MPH)
Accelerator pedal position : 0.0/8
Brake pedal : Depressed
Engine speed : Idle speed
Turn signal lamp/hazard signal lamp : Not activated
NOTE: Stops or prohibits the idle neutral control when the TCM and ECM detect that the vehicle is in one of the following conditions.
- Engine coolant temperature and CVT fluid temperature are the specified temperature or more, or the specified temperature or less.
- When a transaxle malfunction occurs.
- When the vehicle detects DTC and is in the fail-safe mode.
Idle Neutral Control Resume Condition
When the idle neutral control finishes, if the vehicle is driven at more than the specified speed and the idle neutral control start conditions are satisfied, the idle neutral control starts again. If the vehicle has a malfunction, the idle neutral control does not start.
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Description
This is an on board diagnosis system which records diagnosis information related to the exhaust gases. It detects malfunctions related to sensors and actuators. The malfunctions are indicated by means of the malfunction indicator lamp (MIL) and are stored as DTC in the ECU memory. The diagnosis information can be checked using a diagnosis tool (GST: Generic Scan Tool).
Function of OBD
The GST is connected to the diagnosis connector on the vehicle and communicates with the on-board control units to perform diagnosis. The diagnosis connector is the same as for CONSULT. Refer to GI "Description".
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
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