sensor NISSAN TIIDA 2007 Service Repair Manual

ACCELERATOR CONTROL SYSTEM
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Revision: June 20062007 Versa
ACCELERATOR CONTROL SYSTEMPFP:18005
ComponentsEBS00TSU
Removal and InstallationEBS00TSV
CAUTION:

Do not disassemble accelerator pedal assembly. Do not remove accelerator pedal position sensor
from accelerator pedal assembly.

Avoid impact from dropping etc. during handling.

Be careful to keep accelerator pedal assembly away from water.
REMOVAL
1. Disconnect the negative battery terminal.
2. Disconnect accelerator pedal position sensor harness connector.
3. Loosen mounting bolts, and remove accelerator pedal assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.

Insert locating pin into vehicle side to position accelerator pedal assembly. Install mounting bolt to acceler-
ator pedal assembly.

Align the stud bolt on the floor with the thread hole to insert accelerator pedal stopper until it contacts the
face.
INSPECTION AFTER INSTALLATION

Make sure that the accelerator pedal moves smoothly within the whole operation range.

Make sure that the accelerator pedal securely returns to the original position.
1. Accelerator pedal assembly 2. Locating pin 3. Accelerator pedal stopper
: Vehicle front
PBIC3813E

AT-1
AUTOMATIC TRANSAXLE
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION AT
A
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Revision: June 20062007 Versa INDEX FOR DTC ........................................................ 5
Alphabetical Index .................................................... 5
DTC No. Index ......................................................... 6
PRECAUTIONS .......................................................... 7
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 7
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 7
Precautions for On Board Diagnostic (OBD) System
of A/T and Engine .................................................... 8
Precautions .............................................................. 8
Service Notice or Precautions .................................. 9
PREPARATION ..........................................................11
Special Service Tools ..............................................11
Commercial Service Tools ...................................... 14
A/T FLUID ................................................................. 16
Checking A/T Fluid ................................................. 16
Changing A/T Fluid ................................................ 17
A/T Fluid Cooler Cleaning ...................................... 17
A/T CONTROL SYSTEM .......................................... 20
Cross-Sectional View ............................................. 20
Shift Mechanism ..................................................... 21
TCM Function ......................................................... 30
CAN Communication .............................................. 31
Input/Output Signal of TCM .................................... 31
Line Pressure Control ............................................ 32
Shift Control ........................................................... 33
Lock-up Control ...................................................... 34
Engine Brake Control (Overrun Clutch Control) ..... 35
Control Valve .......................................................... 37
Centrifugal Cancel Mechanism .............................. 38
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 39
Introduction ............................................................ 39
OBD-II Function for A/T System ............................. 39
One or Two Trip Detection Logic of OBD-II ............ 39
OBD-II Diagnostic Trouble Code (DTC) ................. 39
Malfunction Indicator Lamp (MIL) ........................... 42
TROUBLE DIAGNOSIS ............................................ 43
DTC Inspection Priority Chart ................................ 43Fail-safe .................................................................. 43
How to Perform Trouble Diagnoses for Quick and
Accurate Repair ...................................................... 45
A/T Electrical Parts Location .................................. 50
Circuit Diagram ....................................................... 52
Inspections Before Trouble Diagnosis .................... 53
Road Test ............................................................... 58
Check Before Engine is Started .............................. 58
Check at Idle ........................................................... 59
Cruise Test — Part 1 .............................................. 61
Cruise Test — Part 2 .............................................. 64
Cruise Test — Part 3 .............................................. 65
Vehicle Speed at Which Gear Shifting Occurs ....... 67
Vehicle Speed at Which Lock-up Occurs/Releases ... 67
Symptom Chart ....................................................... 68
TCM Terminals and Reference Value ..................... 78
CONSULT-II Function (A/T) .................................... 80
Diagnostic Procedure Without CONSULT-II ........... 90
DTC U1000 CAN COMMUNICATION LINE .............. 94
Description .............................................................. 94
On Board Diagnosis Logic ...................................... 94
Possible Cause ....................................................... 94
DTC Confirmation Procedure ................................. 94
Wiring Diagram — AT — CAN ................................ 95
Diagnostic Procedure ............................................. 96
DTC P0705 PARK/NEUTRAL POSITION (PNP)
SWITCH .................................................................... 97
Description .............................................................. 97
CONSULT-II Reference Value ................................ 97
On Board Diagnosis Logic ...................................... 97
Possible Cause ....................................................... 97
DTC Confirmation Procedure ................................. 97
Wiring Diagram — AT — PNP/SW ......................... 98
Diagnostic Procedure ............................................. 99
Component Inspection ..........................................101
DTC P0710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................102
Description ............................................................102
CONSULT-II Reference Value ..............................102
On Board Diagnosis Logic ....................................102

AT-2Revision: June 20062007 Versa Possible Cause .....................................................102
DTC Confirmation Procedure ...............................102
Wiring Diagram — AT — FTS ...............................103
Diagnostic Procedure ...........................................104
Component Inspection ..........................................106
DTC P0720 VEHICLE SPEED SENSOR·A/T (REV-
OLUTION SENSOR) ...............................................107
Description ............................................................107
CONSULT-II Reference Value ..............................107
On Board Diagnosis Logic ....................................107
Possible Cause .....................................................107
DTC Confirmation Procedure ...............................107
Wiring Diagram — AT — VSSA/T .........................109
Diagnostic Procedure ...........................................110
DTC P0725 ENGINE SPEED SIGNAL ...................113
Description ............................................................113
CONSULT-II Reference Value ..............................113
On Board Diagnosis Logic ....................................113
Possible Cause .....................................................113
DTC Confirmation Procedure ...............................113
Wiring Diagram — AT — ENGSS .........................114
Diagnostic Procedure ...........................................115
DTC P0731 A/T 1ST GEAR FUNCTION .................117
Description ............................................................117
On Board Diagnosis Logic ....................................117
Possible Cause .....................................................117
DTC Confirmation Procedure ...............................118
Diagnostic Procedure ...........................................119
DTC P0732 A/T 2ND GEAR FUNCTION ................121
Description ............................................................121
On Board Diagnosis Logic ....................................121
Possible Cause .....................................................121
DTC Confirmation Procedure ...............................122
Diagnostic Procedure ...........................................123
DTC P0733 A/T 3RD GEAR FUNCTION ................124
Description ............................................................124
On Board Diagnosis Logic ....................................124
Possible Cause .....................................................124
DTC Confirmation Procedure ...............................125
Diagnostic Procedure ...........................................126
DTC P0734 A/T 4TH GEAR FUNCTION ................128
Description ............................................................128
CONSULT-II Reference Value ..............................128
On Board Diagnosis Logic ....................................128
Possible Cause .....................................................128
DTC Confirmation Procedure ...............................129
Diagnostic Procedure ...........................................130
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE .................................................134
Description ............................................................134
CONSULT-II Reference Value ..............................134
On Board Diagnosis Logic ....................................134
Possible Cause .....................................................134
DTC Confirmation Procedure ...............................134
Wiring Diagram — AT — TCV ..............................135
Diagnostic Procedure ...........................................136
Component Inspection ..........................................138
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) .139
Description ............................................................139CONSULT-II Reference Value ............................... 139
On Board Diagnosis Logic .................................... 139
Possible Cause ..................................................... 139
DTC Confirmation Procedure ................................ 140
Diagnostic Procedure ............................................ 141
DTC P0745 LINE PRESSURE SOLENOID VALVE . 145
Description ............................................................ 145
CONSULT-II Reference Value ............................... 145
On Board Diagnosis Logic .................................... 145
Possible Cause ..................................................... 145
DTC Confirmation Procedure ................................ 145
Wiring Diagram — AT — LPSV ............................ 146
Diagnostic Procedure ............................................ 147
Component Inspection .......................................... 150
DTC P0750 SHIFT SOLENOID VALVE A ............... 151
Description ............................................................ 151
CONSULT-II Reference Value ............................... 151
On Board Diagnosis Logic .................................... 151
Possible Cause ..................................................... 151
DTC Confirmation Procedure ................................ 151
Wiring Diagram — AT — SSV/A ........................... 152
Diagnostic Procedure ............................................ 153
Component Inspection .......................................... 155
DTC P0755 SHIFT SOLENOID VALVE B ............... 156
Description ............................................................ 156
CONSULT-II Reference Value ............................... 156
On Board Diagnosis Logic .................................... 156
Possible Cause ..................................................... 156
DTC Confirmation Procedure ................................ 156
Wiring Diagram — AT — SSV/B ........................... 157
Diagnostic Procedure ............................................ 158
Component Inspection .......................................... 160
DTC P1760 OVERRUN CLUTCH SOLENOID
VALVE ...................................................................... 161
Description ............................................................ 161
CONSULT-II Reference Value ............................... 161
On Board Diagnosis Logic .................................... 161
Possible Cause ..................................................... 161
DTC Confirmation Procedure ................................ 161
Wiring Diagram — AT — OVRCSV ...................... 162
Diagnostic Procedure ............................................ 163
Component Inspection .......................................... 165
DTC VEHICLE SPEED SENSOR MTR ................... 166
Description ............................................................ 166
CONSULT-II Reference Value ............................... 166
On Board Diagnosis Logic .................................... 166
Possible Cause ..................................................... 166
DTC Confirmation Procedure ................................ 166
Wiring Diagram — AT — VSSMTR ....................... 167
Diagnostic Procedure ............................................ 168
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE) . 170
Description ............................................................ 170
CONSULT-II Reference Value ............................... 170
On Board Diagnosis Logic .................................... 170
Possible Cause ..................................................... 170
DTC Confirmation Procedure ................................ 170
Wiring Diagram — AT — BA/FTS ......................... 171

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Revision: June 20062007 Versa Diagnostic Procedure ........................................... 172
Component Inspection ......................................... 175
DTC TURBINE REVOLUTION SENSOR ............... 176
Description ........................................................... 176
CONSULT-II Reference Value .............................. 176
On Board Diagnosis Logic ................................... 176
Possible Cause .................................................... 176
DTC Confirmation Procedure ............................... 176
Wiring Diagram — AT — PT/SEN ........................ 177
Diagnostic Procedure ........................................... 178
CONTROL UNIT (RAM), CONTROL UNIT (ROM) . 182
Description ........................................................... 182
On Board Diagnosis Logic ................................... 182
Possible Cause .................................................... 182
DTC Confirmation Procedure ............................... 182
Diagnostic Procedure ........................................... 182
MAIN POWER SUPPLY AND GROUND CIRCUIT . 183
Wiring Diagram — AT — MAIN ............................ 183
Diagnostic Procedure ........................................... 184
PNP, OD SWITCH AND CLOSED THROTTLE,
WIDE OPEN THROTTLE POSITION SIGNAL CIR-
CUIT ........................................................................ 186
CONSULT-II Reference Value .............................. 186
TCM Terminals and Reference Value ................... 186
Diagnostic Procedure ........................................... 187
Component Inspection ......................................... 191
SHIFT POSITION INDICATOR CIRCUIT ............... 192
Description ........................................................... 192
CONSULT-II Reference Value .............................. 192
Diagnostic Procedure ........................................... 192
TROUBLE DIAGNOSIS FOR SYMPTOMS ............ 193
Wiring Diagram — AT — NONDTC ...................... 193
OD OFF Indicator Lamp Does Not Come On ...... 198
Engine Cannot Be Started in “P” and “N” Position . 200
In “P” Position, Vehicle Moves Forward or Backward
When Pushed ....................................................... 201
In “N” Position, Vehicle Moves ............................. 201
Large Shock “N” → “R” Position ........................... 202
Vehicle Does Not Creep Backward in “R” Position . 203
Vehicle Does Not Creep Forward in “D”, “2” or “1”
Position ................................................................ 205
Vehicle Cannot Be Started from D
1 ...................... 206
A/T Does Not Shift: D
1 → D2 or Does Not Kickdown:
D
4 → D2 ............................................................... 208
A/T Does Not Shift: D
2 → D3 ............................... 210
A/T Does Not Shift: D
3 → D4 ............................... 212
A/T Does Not Perform Lock-up ............................ 214
A/T Does Not Hold Lock-up Condition ................. 215
Lock-up Is Not Released ...................................... 216
Engine Speed Does Not Return to Idle (Light Brak-
ing D
4 → D3 ) ....................................................... 217
A/T Does Not Shift: D
4 → D3 , When OD OFF .... 218
A/T Does Not Shift: D
3 → 22 , When Selector Lever
“D” → “2” Position ................................................ 219
A/T Does Not Shift: 2
2 → 11 , When Selector Lever
“2” → “1” Position ................................................. 221
Vehicle Does Not Decelerate by Engine Brake .... 223
TCM Self-diagnosis Does Not Activate ................ 227TRANSMISSION CONTROL MODULE ..................228
Removal and Installation ......................................228
SHIFT CONTROL SYSTEM ....................................229
Control Device Removal and Installation ..............229
Control Device Disassembly and Assembly .........232
Selector Lever Knob Removal and Installation .....233
Adjustment of A/T Position ...................................233
Checking of A/T Position ......................................234
A/T SHIFT LOCK SYSTEM ....................................235
Description ............................................................235
Shift Lock System Parts Location .........................235
Wiring Diagram — AT — SHIFT ...........................236
Diagnostic Procedure ...........................................237
KEY INTERLOCK CABLE ......................................239
Removal and Installation ......................................239
ON-VEHICLE SERVICE ..........................................242
Control Valve Assembly and Accumulators ..........242
Park/Neutral Position (PNP) Switch .....................246
Revolution Sensor ................................................247
Turbine Revolution Sensor (Power Train Revolution
Sensor) .................................................................248
Differential Side Oil Seal .......................................250
AIR BREATHER HOSE ..........................................252
Removal and Installation ......................................252
TRANSAXLE ASSEMBLY ......................................253
Removal and Installation ......................................253
OVERHAUL ............................................................257
Components .........................................................257
Oil Channel ...........................................................265
Locations of Adjusting Shims, Needle Bearings and
Thrust Washers ....................................................266
Locations of Snap Rings .......................................267
DISASSEMBLY .......................................................268
Disassembly .........................................................268
REPAIR FOR COMPONENT PARTS .....................285
Manual Shaft ........................................................285
Oil Pump ...............................................................289
Control Valve Assembly ........................................293
Control Valve Upper Body ....................................302
Control Valve Lower Body ....................................306
Reverse Clutch .....................................................309
High Clutch ...........................................................314
Forward and Overrun Clutches ............................320
Low & Reverse Brake ...........................................327
Rear Internal Gear and Forward Clutch Hub ........332
Output Shaft, Output Gear, Idler Gear, Reduction
Pinion Gear and Bearing Retainer ........................336
Band Servo Piston Assembly ...............................343
Final Drive ............................................................349
ASSEMBLY .............................................................354
Assembly (1) .........................................................354
Adjustment (1) ......................................................355
Assembly (2) .........................................................361
Adjustment (2) ......................................................366
Assembly (3) .........................................................369
SERVICE DATA AND SPECIFICATIONS (SDS) ....378
General Specifications ..........................................378
Vehicle Speed at Which Gear Shifting Occurs .....378
Vehicle Speed at When Lock-up Occurs/Releases .378

AT-4Revision: June 20062007 Versa Stall Speed ...........................................................378
Line Pressure .......................................................378
Adjusting shims, Needle Bearings, Thrust Washers
and Snap Rings ....................................................379
Control Valves .......................................................380
Accumulator ..........................................................380
Clutches and Brakes ............................................380
Final Drive ............................................................382
Planetary Carrier ...................................................382
Oil Pump ...............................................................382
Input Shaft ............................................................382
Reduction Pinion Gear .........................................382
Band Servo ...........................................................382Output Shaft .......................................................... 382
Bearing Retainer ................................................... 383
Total End Play ....................................................... 383
Reverse Clutch End Play ...................................... 383
Removal and Installation ....................................... 383
Shift Solenoid Valves ............................................ 383
Solenoid Valves .................................................... 383
A/T Fluid Temperature Sensor .............................. 383
Revolution Sensor ................................................. 383
Dropping Resistor ................................................. 383
Turbine Revolution Sensor (Power Train Revolution
Sensor) ................................................................. 383

INDEX FOR DTC
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Revision: June 20062007 Versa
INDEX FOR DTCPFP:00024
Alphabetical Index UCS005LY
NOTE:
If DTC “CAN COMM CIRCUIT” is displayed with other DTCs, first perform the trouble diagnosis for
DTC “CAN COMM CIRCUIT”. Refer to AT- 9 4
.
*1: These numbers is prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
*3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
the same time.Items
(CONSULT-II screen terms)DTC
Reference page
CONSULT-II or GST
*1
A/T 1ST GR FNCTN P0731AT- 11 7
A/T 2ND GR FNCTN P0732AT- 1 2 1
A/T 3RD GR FNCTN P0733AT- 1 2 4
A/T 4TH GR FNCTN P0734AT- 1 2 8
A/T TCC S/V FNCTN P0744AT- 1 3 9
ATF TEMP SEN/CIRC P0710AT- 1 0 2
BATT/FLUID TEMP SEN —AT- 1 7 0
CAN COMM CIRCUIT U1000AT- 9 4
CONTROL UNIT (RAM) —AT- 1 8 2
CONTROL UNIT (ROM) —AT- 1 8 2
ENGINE SPEED SIG P0725AT- 11 3
LINE PRESSURE S/V P0745AT- 1 4 5
OVERRUN CLUTCH S/V P1760AT- 1 6 1
PNP SW/CIRC P0705AT- 9 7
SHIFT SOLENOID/V A*2P0750AT- 1 5 1
SHIFT SOLENOID/V B*2P0755AT- 1 5 6
T/C CLUTCH SOL/V P0740AT- 1 3 4
TURBINE SENSOR —AT- 1 7 6
VHCL SPEED SEN-A/T*3P0720AT- 1 0 7
VHCL SPEED SEN-MTR —AT- 1 6 6

AT-6
INDEX FOR DTC
Revision: June 20062007 Versa
DTC No. IndexUCS005LZ
NOTE:
If DTC “CAN COMM CIRCUIT” is displayed with other DTCs, first perform the trouble diagnosis for
DTC “CAN COMM CIRCUIT”. Refer to AT-9 4
.
*1: These numbers is prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
*3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
the same time.DTC
Items
(CONSULT-II screen terms) Reference page
CONSULT-II or GST
*1
P0705 PNP SW/CIRCAT- 9 7
P0710 ATF TEMP SEN/CIRCAT-102
P0720
VHCL SPEED SEN-A/T*3AT-107
P0725 ENGINE SPEED SIGAT- 11 3
P0731 A/T 1ST GR FNCTNAT- 11 7
P0732 A/T 2ND GR FNCTNAT-121
P0733 A/T 3RD GR FNCTNAT-124
P0734 A/T 4TH GR FNCTNAT-128
P0740 T/C CLUTCH SOL/VAT-134
P0744 A/T TCC S/V FNCTNAT-139
P0745 LINE PRESSURE S/VAT-145
P0750
SHIFT SOLENOID/V A*2AT-151
P0755
SHIFT SOLENOID/V B*2AT-156
P1760 OVERRUN CLUTCH S/VAT-161
U1000 CAN COMM CIRCUITAT- 9 4
— BATT/FLUID TEMP SENAT-170
— CONTROL UNIT (RAM)AT-182
— CONTROL UNIT (ROM)AT-182
— TURBINE SENSORAT-176
— VHCL SPEED SEN-MTRAT-166

AT-30
A/T CONTROL SYSTEM
Revision: June 20062007 Versa
TCM FunctionUCS005MC
The function of the TCM is to:

Receive input signals sent from various switches and sensors.

Determine required line pressure, shifting point, lock-up operation, and engine brake operation.

Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transaxle senses vehicle operating conditions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SWITCHES & SENSORS


TCM


ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Turbine revolution sensor (Power
train revolution sensor)
Vehicle speed sensor
Overdrive control switch signal
Stop lamp switch signalShift control
Line pressure control
Lock-up control
Overrun clutch control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
controlShift solenoid valve A
Shift solenoid valve B
Overrun clutch solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
OD OFF indicator lamp
SCIA7 112 E

A/T CONTROL SYSTEM
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CAN CommunicationUCS005M D
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-47,
"CAN System Specification Chart" .
Input/Output Signal of TCMUCS005M E
*1: Spare for vehicle speed sensor·A/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: Used as a condition for starting self-diagnostics; if self-diagnosis are not started, it is judged that there is some kind of error.
*5: Input by CAN communications.
*6: Output by CAN communications.Control itemLine
pressure
controlVehicle
speed
controlShift
controlLock-up
controlEngine
brake
controlFail-safe
functionSelf-diag-
nostics
function
InputAccelerator pedal position signal
(*5)XXXXX(*3) XX
Vehicle speed sensor·A/T
(Revolution sensor)XXXXX(*3) XX
Vehicle speed sensor·MTR (*1) X (*1) X (*1) X (*1) X X
Closed throttle position signal
(*5)(*2) X(*2) XXX(*4) X
Wide open throttle position signal
(*5)(*2) X (*2) X (*4) X
Turbine revolution sensor (Power
train revolution sensor)XX X XX
Engine speed signal X X X X
PNP switch X X X X X (*3) X (*4) X
Stop lamp switch signal
(*5)XX (*4) X
A/T fluid temperature sensors
(*5)XXXX XX
Overdrive control switch signal
(*5)XXXX (*4) X
TCM power supply voltage signal X X X X
Out-
putShift solenoid valve A/B X (*3) X X
Line pressure solenoid X (*3) X X
Torque converter clutch solenoid
valveX(*3) XX
Overrun clutch solenoid valve X X (*3) X X
OD OFF indicator lamp
(*6)XX

A/T CONTROL SYSTEM
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AT LOW FLUID TEMPERATURE

A/T fluid viscosity and frictional characteristics of the clutch facing change with A/T fluid temperature.
Clutch engaging or band-contacting pressure is compensated for, according to A/T fluid temperature, to
stabilize shifting quality.

The line pressure is reduced below 60°C (140°F) to prevent
shifting shock due to high viscosity of A/T fluid when tempera-
ture is low.

Line pressure is increased to a maximum irrespective of the
throttle opening when A/T fluid temperature drops to −10°C
(14°F). This pressure rise is adopted to prevent a delay in clutch
and brake operation due to extreme drop of A/T fluid viscosity at
low temperature.
Shift ControlUCS005MG
The shift is regulated entirely by electronic control to accommodate vehicle speed and varying engine opera-
tions. This is accomplished by electrical signals transmitted by the revolution sensor and the ECM (accelerator
pedal position sensor). This results in improved acceleration performance and fuel economy.
CONTROL OF SHIFT SOLENOID VALVES A AND B
The TCM activates shift solenoid valves A and B according to sig-
nals from the accelerator pedal position sensor and revolution sen-
sor to select the optimum gear position on the basis of the shift
schedule memorized in the TCM.
The shift solenoid valve performs simple ON-OFF operation. When
set to “ON”, the drain circuit closes and pilot pressure is applied to
the shift valve.
RELATION BETWEEN SHIFT SOLENOID VALVES A AND B AND GEAR POSITIONS
SCIA4829E
SCIA4830E
SAT0 0 8J
Gear position 1 2 3 4
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)