2014 NISSAN TEANA transmission fluid

TM-2
CVT CONTROL SYSTEM : Fail-safe .................. ...31
CVT CONTROL SYSTEM : Protection Control ... ...34
LINE PRESSURE CONTROL ................................ ...35
LINE PRESSURE CONTROL : System Descrip-
tion ....................................................................... ...
35
SHIFT CONTROL ................................................... ...35
SHIFT CONTROL : System Description .................36
SELECT CONTROL ............................................... ...37
SELECT CONTROL : System Description .............38
LOCK-UP CONTROL ............................................. ...38
LOCK-UP CONTROL : System Description ...........38
ON BOARD DIAGNOSTIC (OBD) SYSTEM .....40
Description ........................................................... ...40
Function of OBD .....................................................40
DIAGNOSIS SYSTEM (TCM) ............................41
DIAGNOSIS DESCRIPTION .................................. ...41
DIAGNOSIS DESCRIPTION : 1 Trip Detection Di-
agnosis and 2 Trip Detection Diagnosis .............. ...
41
DIAGNOSIS DESCRIPTION : DTC and DTC of
1st Trip ................................................................. ...
41
DIAGNOSIS DESCRIPTION : Malfunction Indica-
tor Lamp (MIL) ..................................................... ...
41
DIAGNOSIS DESCRIPTION : Counter System .....41
CONSULT Function ................................................43
ECU DIAGNOSIS INFORMATION ..............49
TCM ................................................................. ...49
Reference Value .................................................. ...49
Fail-safe ..................................................................56
Protection Control ...................................................59
DTC Inspection Priority Chart .................................59
DTC Index ..............................................................60
WIRING DIAGRAM .....................................62
CVT CONTROL SYSTEM ............................... ...62
Wiring diagram .................................................... ...62
CVT SHIFT LOCK SYSTEM ........................... ...73
Wiring diagram .................................................... ...73
BASIC INSPECTION ...................................77
DIAGNOSIS AND REPAIR WORK FLOW ..... ...77
Flowchart of Trouble Diagnosis ........................... ...77
Question sheet .......................................................78
ADDITIONAL SERVICE WHEN REPLACING
TCM ................................................................. ...
80
Description ........................................................... ...80
Work Procedure ......................................................80
ADDITIONAL SERVICE WHEN REPLACING
TRANSAXLE ASSEMBLY ............................. ...
81
Description ........................................................... ...81
Work Procedure ................................................... ...81
CVT FLUID ........................................................83
Replacement ........................................................ ...83
Adjustment ..............................................................84
STALL TEST .....................................................86
Work Procedure ................................................... ...86
CVT POSITION ..................................................87
Inspection ............................................................. ...87
Adjustment ..............................................................87
DTC/CIRCUIT DIAGNOSIS ........................88
U0073 COMMUNICATION BUS A OFF ......... ...88
DTC Logic ............................................................ ...88
Diagnosis Procedure ...............................................88
U0100 LOST COMMUNICATION (ECM A) .......89
DTC Logic ............................................................ ...89
Diagnosis Procedure ...............................................89
U0140 LOST COMMUNICATION (BCM) ..........90
DTC Logic ............................................................ ...90
Diagnosis Procedure ...............................................90
U0141 LOST COMMUNICATION (BCM A) ......91
DTC Logic ............................................................ ...91
Diagnosis Procedure ...............................................91
U0155 LOST COMMUNICATION (IPC) ............92
DTC Logic ............................................................ ...92
Diagnosis Procedure ...............................................92
U0300 CAN COMMUNICATION DATA ............93
DTC Logic ............................................................ ...93
Diagnosis Procedure ...............................................93
U1000 CAN COMM CIRCUIT ............................94
Description ........................................................... ...94
DTC Logic ...............................................................94
Diagnosis Procedure ...............................................94
U1117 LOST COMMUNICATION (ABS) ...........95
DTC Logic ............................................................ ...95
Diagnosis Procedure ...............................................95
P062F EEPROM ................................................96
Description ........................................................... ...96
DTC Logic ...............................................................96
Diagnosis Procedure ...............................................96
P0705 TRANSMISSION RANGE SENSOR A ...97
DTC Logic ............................................................ ...97
Diagnosis Procedure ...............................................97
Component Inspection ..........................................101
P0706 TRANSMISSION RANGE SENSOR A ..103
DTC Logic ............................................................ .103
Diagnosis Procedure .............................................103
Component Inspection ..........................................105
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

TM-3
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P0711 TRANSMISSION FLUID TEMPERA-
TURE SENSOR A .......................................... ..
106
DTC Logic ........................................................... ..106
Diagnosis Procedure .............................................107
P0712 TRANSMISSION FLUID TEMPERA-
TURE SENSOR A .......................................... ..
110
DTC Logic ........................................................... ..110
Diagnosis Procedure .............................................110
Component Inspection ..........................................110
P0713 TRANSMISSION FLUID TEMPERA-
TURE SENSOR A .......................................... ..
112
DTC Logic ........................................................... ..112
Diagnosis Procedure .............................................112
Component Inspection ..........................................113
P0715 INPUT SPEED SENSOR A ...................114
DTC Logic ........................................................... ..114
Diagnosis Procedure .............................................115
P0717 INPUT SPEED SENSOR A ...................117
DTC Logic ........................................................... ..117
Diagnosis Procedure .............................................118
P0740 TORQUE CONVERTER ........................120
DTC Logic ........................................................... ..120
Diagnosis Procedure .............................................121
P0743 TORQUE CONVERTER ........................122
DTC Logic ........................................................... ..122
Diagnosis Procedure .............................................123
P0744 TORQUE CONVERTER ........................124
DTC Logic ........................................................... ..124
Diagnosis Procedure .............................................125
P0746 PRESSURE CONTROL SOLENOID A ..126
DTC Logic ........................................................... ..126
Diagnosis Procedure .............................................127
P0776 PRESSURE CONTROL SOLENOID B ..128
DTC Logic ........................................................... ..128
Diagnosis Procedure .............................................129
P0778 PRESSURE CONTROL SOLENOID B ..130
DTC Logic ........................................................... ..130
Diagnosis Procedure .............................................130
P0779 PRESSURE CONTROL SOLENOID B ..132
DTC Logic ........................................................... ..132
Diagnosis Procedure .............................................132
P0841 TRANSMISSION FLUID PRESSURE
SEN/SW A ...................................................... ..
134
DTC Logic ........................................................... ..134
Diagnosis Procedure .............................................134
P0847 TRANSMISSION FLUID PRESSURE
SEN/SW B ...................................................... ..
135
DTC Logic ........................................................... ..135
Diagnosis Procedure ........................................... ..135
P0848 TRANSMISSION FLUID PRESSURE
SEN/SW B .......................................................
137
DTC Logic ............................................................ ..137
Diagnosis Procedure .............................................137
P084C TRANSMISSION FLUID PRESSURE
SEN/SW H .......................................................
139
DTC Logic ............................................................ ..139
Diagnosis Procedure .............................................139
P084D TRANSMISSION FLUID PRESSURE
SEN/SW H .......................................................
141
DTC Logic ............................................................ ..141
Diagnosis Procedure .............................................141
P0863 TCM COMMUNICATION .....................143
DTC Logic ..............................................................143
Diagnosis Procedure .............................................143
P0890 TCM ......................................................144
DTC Logic ..............................................................144
Diagnosis Procedure .............................................144
P0962 PRESSURE CONTROL SOLENOID A .145
DTC Logic ............................................................ ..145
Diagnosis Procedure .............................................145
P0963 PRESSURE CONTROL SOLENOID A .147
DTC Logic ............................................................ ..147
Diagnosis Procedure .............................................147
P0965 PRESSURE CONTROL SOLENOID B .149
DTC Logic ............................................................ ..149
Diagnosis Procedure .............................................150
P0966 PRESSURE CONTROL SOLENOID B .151
DTC Logic ............................................................ ..151
Diagnosis Procedure .............................................151
P0967 PRESSURE CONTROL SOLENOID B .153
DTC Logic ............................................................ ..153
Diagnosis Procedure .............................................153
P2765 INPUT SPEED SENSOR B ..................155
DTC Logic ..............................................................155
Diagnosis Procedure .............................................156
P2813 SELECT SOLENOID ...........................158
DTC Logic ..............................................................158
Diagnosis Procedure .............................................159
P2814 SELECT SOLENOID ...........................160
DTC Logic ..............................................................160
Diagnosis Procedure .............................................160
P2815 SELECT SOLENOID ...........................162
DTC Logic ..............................................................162
Diagnosis Procedure .............................................162
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

TM-5
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General Specification ..........................................
..
212
Shift Characteristics ..............................................212
Stall Speed ............................................................212
Torque Converter ..................................................212
Heater Thermostat ................................................212
CVT: RE0F10E
PRECAUTION ................ ............................
213
PRECAUTIONS .............................................. ..213
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
213
Precaution for Procedure without Cowl Top Cover ..213
Precaution for TCM and Transaxle Assembly Re-
placement ............................................................ ..
213
General Precautions .............................................214
On Board Diagnosis (OBD) System of CVT and
Engine ................................................................. ..
215
Removal and Installation Procedure for CVT Unit
Connector ............................................................ ..
215
PREPARATION .........................................217
PREPARATION .............................................. ..217
Special Service Tools .......................................... ..217
Commercial Service Tools ....................................217
SYSTEM DESCRIPTION ...........................218
COMPONENT PARTS ................................... ..218
CVT CONTROL SYSTEM .......................................218
CVT CONTROL SYSTEM : Component Parts Lo-
cation ................................................................... ..
218
CVT CONTROL SYSTEM : TCM ..........................219
CVT CONTROL SYSTEM : Transmission Range
Switch .................................................................. ..
219
CVT CONTROL SYSTEM : Primary Speed Sen-
sor ....................................................................... ..
219
CVT CONTROL SYSTEM : Output Speed Sensor ..220
CVT CONTROL SYSTEM : Input Speed Sensor ..220
CVT CONTROL SYSTEM : CVT Fluid Tempera-
ture Sensor .......................................................... ..
221
CVT CONTROL SYSTEM : Primary Pressure
Sensor ................................................................. ..
221
CVT CONTROL SYSTEM : Secondary Pressure
Sensor ................................................................. ..
222
CVT CONTROL SYSTEM : Primary Pressure So-
lenoid Valve ......................................................... ..
222
CVT CONTROL SYSTEM : Secondary Pressure
Solenoid Valve .................................................... ..
222
CVT CONTROL SYSTEM : Select Solenoid Valve
..
223
CVT CONTROL SYSTEM : Torque Converter
Clutch Solenoid Valve ......................................... ..
223
CVT CONTROL SYSTEM : Line Pressure Sole-
noid Valve ........................................................... ..
223
CVT CONTROL SYSTEM : Paddle Shifter ...........223
CVT CONTROL SYSTEM : Shift Position Indica-
tor ........................................................................ ..
223
SHIFT LOCK SYSTEM ............................................223
SHIFT LOCK SYSTEM : Component Parts Loca-
tion ....................................................................... ..
224
STRUCTURE AND OPERATION ...................225
TRANSAXLE .......................................................... ..225
TRANSAXLE : Cross-Sectional View ....................225
TRANSAXLE : Operation Stat us ...........................226
TRANSAXLE : Transaxle Me chanism ...................226
TRANSAXLE : Oil Pressure System .....................228
TRANSAXLE : Component De scription .................229
FLUID COOLER & FLUID WARMER SYSTEM .... ..229
FLUID COOLER & FLUID WARMER SYSTEM :
System Description .............................................. ..
230
SHIFT LOCK SYSTEM ............................................230
SHIFT LOCK SYSTEM : Syst em Description ........230
SYSTEM ...................... ....................................232
CVT CONTROL SYSTEM ..... ...................................232
CVT CONTROL SYSTEM : S ystem Description ...232
CVT CONTROL SYSTEM : Fa il-safe ....................233
CVT CONTROL SYSTEM : Pr otection Control .....236
LINE PRESSURE CONTROL ......................... .........237
LINE PRESSURE CONTROL : System Descrip-
tion ....................................................................... ..
237
SHIFT CONTROL .................................................. ..237
SHIFT CONTROL : System Description ................238
SELECT CONTROL ............................................... ..239
SELECT CONTROL : System Description ............239
LOCK-UP CONTROL ............................................ ..240
LOCK-UP CONTROL : System Description ..........240
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..242
Description .............................................................242
Function of OBD ....................................................242
DIAGNOSIS SYSTEM (TCM) ..........................243
DIAGNOSIS DESCRIPTION .................................. ..243
DIAGNOSIS DESCRIPTION : 1 Trip Detection Di-
agnosis and 2 Trip Detection Diagnosis .............. ..
243
DIAGNOSIS DESCRIPTION : DTC and DTC of
1st Trip ................................................................. ..
243
DIAGNOSIS DESCRIPTION : Malfunction Indica-
tor Lamp (MIL) ..................................................... ..
243
DIAGNOSIS DESCRIPTION : Counter System ....243
CONSULT Function ............................................. ..245
ECU DIAGNOSIS INFORMATION ............251
TCM .................................................................251
Reference Value .................................................. ..251
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

TM-6
Fail-safe .................................................................258
Protection Control ..................................................261
DTC Inspection Priority Chart ................................262
DTC Index .............................................................263
WIRING DIAGRAM ....................................265
CVT CONTROL SYSTEM ............................... .265
Wiring diagram .................................................... ..265
CVT SHIFT LOCK SYSTEM ........................... .275
Wiring Diagram .................................................... ..275
BASIC INSPECTION ..................................279
DIAGNOSIS AND REPAIR WORK FLOW ..... .279
Work Flow ............................................................ ..279
Diagnostic Work Sheet ..........................................280
ADDITIONAL SERVICE WHEN REPLACING
TCM ................................................................. .
282
Description ........................................................... ..282
Work Procedure .....................................................282
ADDITIONAL SERVICE WHEN REPLACING
TRANSAXLE ASSEMBLY ............................. .
283
Description ........................................................... ..283
Work Procedure .....................................................283
CVT FLUID .......................................................285
Replacement ....................................................... ..285
Adjustment .............................................................286
STALL TEST ....................................................288
Work Procedure ................................................... ..288
CVT POSITION ................................................289
Inspection ............................................................ ..289
Adjustment .............................................................289
DTC/CIRCUIT DIAGNOSIS ...................... ..290
U0073 COMMUNICATION BUS A OFF ......... .290
DTC Logic ............................................................ ..290
Diagnosis Procedure .............................................290
U0100 LOST COMMUNICATION (ECM A) .....291
DTC Logic ............................................................ ..291
Diagnosis Procedure .............................................291
U0140 LOST COMMUNICATION (BCM) ........292
DTC Logic ............................................................ ..292
Diagnosis Procedure .............................................292
U0141 LOST COMMUNICATION (BCM A) .....293
DTC Logic ............................................................ ..293
Diagnosis Procedure .............................................293
U0155 LOST COMMUNICATION (IPC) ..........294
DTC Logic ............................................................ ..294
Diagnosis Procedure .............................................294
U0300 CAN COMMUNICATION DATA ...........295
DTC Logic ............................................................ .295
Diagnosis Procedure .............................................295
U1000 CAN COMM CIRCUIT ...........................296
Description ........................................................... .296
DTC Logic .............................................................296
Diagnosis Procedure .............................................296
U1117 LOST COMMUNICATION (ABS) ..........297
DTC Logic ............................................................ .297
Diagnosis Procedure .............................................297
P062F EEPROM ...............................................298
Description ........................................................... .298
DTC Logic .............................................................298
Diagnosis Procedure .............................................298
P0705 TRANSMISSION RANGE SENSOR A ..299
DTC Logic ............................................................ .299
Diagnosis Procedure .............................................299
Component Inspection ..........................................303
P0706 TRANSMISSION RANGE SENSOR A ..305
DTC Logic ............................................................ .305
Diagnosis Procedure .............................................305
Component Inspection ..........................................307
P0711 TRANSMISSION FLUID TEMPERA-
TURE SENSOR A ........................................... ..
308
DTC Logic ............................................................ .308
Diagnosis Procedure .............................................309
P0712 TRANSMISSION FLUID TEMPERA-
TURE SENSOR A ........................................... ..
312
DTC Logic ............................................................ .312
Diagnosis Procedure .............................................312
Component Inspection ..........................................312
P0713 TRANSMISSION FLUID TEMPERA-
TURE SENSOR A ........................................... ..
314
DTC Logic ............................................................ .314
Diagnosis Procedure .............................................314
Component Inspection ..........................................315
P0715 INPUT SPEED SENSOR A ...................316
DTC Logic ............................................................ .316
Diagnosis Procedure .............................................317
P0717 INPUT SPEED SENSOR A ...................319
DTC Logic ............................................................ .319
Diagnosis Procedure .............................................320
P0740 TORQUE CONVERTER ........................322
DTC Logic ............................................................ .322
Diagnosis Procedure .............................................323
P0743 TORQUE CONVERTER ........................324
DTC Logic ............................................................ .324
Diagnosis Procedure .............................................325
P0744 TORQUE CONVERTER ........................326
DTC Logic ............................................................ .326
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

TM-7
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Diagnosis Procedure ...........................................
..
327
P0746 PRESSURE CONTROL SOLENOID A ..328
DTC Logic ........................................................... ..328
Diagnosis Procedure .............................................329
P0776 PRESSURE CONTROL SOLENOID B ..330
DTC Logic ........................................................... ..330
Diagnosis Procedure .............................................331
P0778 PRESSURE CONTROL SOLENOID B ..332
DTC Logic ........................................................... ..332
Diagnosis Procedure .............................................332
P0779 PRESSURE CONTROL SOLENOID B ..334
DTC Logic ........................................................... ..334
Diagnosis Procedure .............................................334
P0841 TRANSMISSION FLUID PRESSURE
SEN/SW A ...................................................... ..
336
DTC Logic ........................................................... ..336
Diagnosis Procedure .............................................336
P0847 TRANSMISSION FLUID PRESSURE
SEN/SW B ...................................................... ..
337
DTC Logic ........................................................... ..337
Diagnosis Procedure .............................................337
P0848 TRANSMISSION FLUID PRESSURE
SEN/SW B ...................................................... ..
339
DTC Logic ........................................................... ..339
Diagnosis Procedure .............................................339
P084C TRANSMISSION FLUID PRESSURE
SEN/SW H ...................................................... ..
341
DTC Logic ........................................................... ..341
Diagnosis Procedure .............................................341
P084D TRANSMISSION FLUID PRESSURE
SEN/SW H ...................................................... ..
343
DTC Logic ........................................................... ..343
Diagnosis Procedure .............................................343
P0863 TCM COMMUNICATION ......................345
DTC Logic ........................................................... ..345
Diagnosis Procedure .............................................345
P0890 TCM .......................................................346
DTC Logic ........................................................... ..346
Diagnosis Procedure .............................................346
P0962 PRESSURE CONTROL SOLENOID A ..347
DTC Logic ........................................................... ..347
Diagnosis Procedure .............................................347
P0963 PRESSURE CONTROL SOLENOID A ..349
DTC Logic ........................................................... ..349
Diagnosis Procedure .............................................349
P0965 PRESSURE CONTROL SOLENOID B ..351
DTC Logic ........................................................... ..351
Diagnosis Procedure .............................................352
P0966 PRESSURE CONTROL SOLENOID B .353
DTC Logic ............................................................ ..353
Diagnosis Procedure .............................................353
P0967 PRESSURE CONTROL SOLENOID B .355
DTC Logic ............................................................ ..355
Diagnosis Procedure .............................................355
P2765 INPUT SPEED SENSOR B ..................357
DTC Logic ..............................................................357
Diagnosis Procedure .............................................358
P2813 SELECT SOLENOID ...........................360
DTC Logic ..............................................................360
Diagnosis Procedure .............................................361
P2814 SELECT SOLENOID ...........................362
DTC Logic ..............................................................362
Diagnosis Procedure .............................................362
P2815 SELECT SOLENOID ...........................364
DTC Logic ..............................................................364
Diagnosis Procedure .............................................364
MAIN POWER SUPPLY AND GROUND CIR-
CUIT ................................................................
366
Diagnosis Procedure ........................................... ..366
SHIFT POSITION INDICATOR CIRCUIT ........368
Component Parts Function Inspection ..................368
Diagnosis Procedure .............................................368
SHIFT LOCK SYSTEM ...................................369
Component Function Check ..................................369
Diagnosis Procedure .............................................369
Component Inspection (Shift Lock Solenoid) ........371
Component Inspection (Park Position Switch) ......371
Component Inspection (Stop Lamp Switch) ..........372
SYMPTOM DIAGNOSIS ............................373
CVT CONTROL SYSTEM ...............................373
Symptom Table ................................................... ..373
PERIODIC MAINTENANCE ......................377
CVT FLUID ......................................................377
Inspection ............................................................ ..377
REMOVAL AND INSTALLATION .............378
CVT SHIFT SELECTOR ..................................378
Exploded View ..................................................... ..378
Removal and Installation .......................................378
Inspection ..............................................................379
CONTROL CABLE ..........................................380
Exploded View .......................................................380
Removal and Installation .......................................380
Inspection and Adjustment ....................................381
PADDLE SHIFTER ..........................................382
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

TM-16
< SYSTEM DESCRIPTION >[CVT: RE0F10D]
COMPONENT PARTS
*: These components are included in control valve assembly.
CVT CONTROL SYSTEM : TCMINFOID:0000000009463963
• The vehicle driving status is judged based on the signals
from the sensors, switches, and other control units,
and the optimal transaxle control is performed.
• For TCM control items, refer to TM-30, "CVT CONTROL SYSTEM : System Description"
.
CVT CONTROL SYSTEM : Transmission Range SwitchINFOID:0000000009463964
• The transmission range switch is installed to upper part of transaxle case.
• The transmission range switch detects the selector lever position.
CVT CONTROL SYSTEM : Primary Speed SensorINFOID:0000000009463965
• The primary speed sensor is installed to side cover of transaxle.
• The primary speed sensor detects primary pulley speed.
• The primary speed sensor generates an ON-OFF pulse signal according to the rotating body speed. TCM
judges the rotating body speed from the pulse signal.
CVT CONTROL SYSTEM : Output Speed SensorINFOID:0000000009463966
• The output speed sensor is installed to back side of transaxle.
• The output speed sensor detects final gear speed.
Control
valve CVT fluid temperature sensor*
TM-17, "CVT CONTROL SYSTEM : CVT Fluid Temperature Sensor"
Primary pressure sensor* TM-18, "CVT CONTROL SYSTEM : Primary Pressure Sensor"
Secondary pressure sensor* TM-18, "CVT CONTROL SYSTEM : Secondary Pressure Sensor"
Primary pressure solenoid valve* TM-19, "CVT CONTROL SYSTEM : Primary Pressure Solenoid Valve"
Secondary pressure solenoid valve* TM-19, "CVT CONTROL SYSTEM : Secondary Pressure Solenoid Valve"
Select solenoid valve* TM-19, "CVT CONTROL SYSTEM : Select Solenoid Valve"
Torque converter clutch solenoid
valve* TM-19, "CVT CONTROL SYSTEM : Torq
ue Converter Clutch Solenoid
Va l v e "
Line pressure solenoid valve* TM-20, "CVT CONTROL SYSTEM : Line Pressure Solenoid Valve"
Overdrive control switch TM-20, "CVT CONTROL SYSTEM : Overdrive Control Switch"
No. Component Function
JSDIA1824GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

TM-26
< SYSTEM DESCRIPTION >[CVT: RE0F10D]
STRUCTURE AND OPERATION
The lubrication oil is the same as the CVT
fluid which lubricates the entire transaxle.
TRANSAXLE : Oil Pressure System INFOID:0000000009463983
Oil pressure required for operation of the transaxle transmission mechanism is generated by oil pump, oil
pressure control valve, solenoid valve, etc.
JSDIA2427GB
JSDIA3786GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

SYSTEMTM-31
< SYSTEM DESCRIPTION > [CVT: RE0F10D]
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• CVT detects the vehicle driving status from switc hes, sensors and signals, and controls the vehicle so that
the optimum shift position and shift timing may always be achieved. It also controls the vehicle to reduce
shift and lockup shock, etc.
• Receives input signals from switches and sensors.
• Sends the output signal necessary for operation of so lenoid valves, and evaluates the line pressure, shift
timing, lockup operation, engine brake performance, etc.
• If a malfunction occurs on the electric system, activa te the fail-safe mode only to drive the vehicle.
LIST OF CONTROL ITEMS AND INPUT/OUTPUT
*: If these input/output signals show errors, TCM activates the fail-safe function.
CVT CONTROL SYSTEM : Fail-safeINFOID:0000000009463988
TCM has a fail-safe mode. The mode functions so that operation can be continued even if the signal circuit of
the main electronically controlled input/output parts is damaged.
If the vehicle shows following behaviors including “poor acceleration”, a malfunction of the applicable system
is detected by TCM and the vehicle may be in a fail-s afe mode. At this time, check the DTC code and perform
inspection and repair according to the malfunction diagnosis procedures.
Fail-safe function
Control Item Shift control Line pressure
control Select control Lock-up con-
trol Fail-safe func-
tion*
Input Engine torque signal
(CAN communication) ×××××
Engine speed signal
(CAN communication) ×××××
Accelerator pedal position signal
(CAN communication) ××××
Closed throttle position signal
(CAN communication) ×× ×
Stop lamp switch signal
(CAN communication) ××××
Primary pressure sensor ×
Secondary pressure sensor ×× ×
CVT fluid temperature sensor ×××××
Primary speed sensor ×××××
Output speed sensor ×× ××
Input speed sensor ×××××
Transmission range switch ×××××
Overdrive control switch
(CAN communication) ×× ×
Output Line pressure solenoid valve
××× ×
Primary pressure solenoid valve ×× ×
Torque converter clutch solenoid
valve ××
Secondary pressure solenoid valve ×× ×
Select solenoid valve ×××
Shift position indicator
(CAN communication) ×
O/D OFF indicator lamp
(CAN communication) ×
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM