Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti G20 P11 1999-2002 Approved G20-P11-2002 at
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AUTOMATIC TRANSAXLE GI
SECTION AT MA
EM
LC
EC
CONTENTS FE
TROUBLE DIAGNOSIS - INDEX ....................................4 TROUBLE DIAGNOSIS - GENERAL
CL
Alphabetical & P No. Index for DTC ...........................4 DESCRIPTION ...............................................................86
PRECAUTIONS ...............................................................6 Symptom Chart..........................................................86 MT
Supplemental Restraint System (SRS) AIR TCM Terminals and Reference Value........................99
BAG and SEAT BELT PRE-TENSIONER...............6 TROUBLE DIAGNOSIS FOR POWER SUPPLY........104
Precautions for On Board Diagnostic (OBD) Wiring Diagram - AT - MAIN....................................104
System of A/T and Engine...........................................6 Diagnostic Procedure ..............................................105
Precautions ..................................................................6 DTC P0705 PARK/NEUTRAL POSITION (PNP)
Service Notice or Precautions .....................................8 SWITCH .......................................................................107
AX
Wiring Diagrams and Trouble Diagnosis.....................9 Description ...............................................................107
PREPARATION .............................................................10 Wiring Diagram - AT - PNP/SW...............................109 SU
Special Service Tools ................................................10 Diagnostic Procedure ..............................................110
Commercial Service Tools .........................................12 Component Inspection.............................................112
OVERALL SYSTEM ......................................................14 DTC P0710 A/T FLUID TEMPERATURE SENSOR BR
A/T Electrical Parts Location .....................................14 CIRCUIT .......................................................................113
Circuit Diagram ..........................................................15 Description ...............................................................113
Cross-sectional View - RE4F03B ..............................16 Wiring Diagram - AT - FTS ......................................115 ST
Cross-sectional View - RE4F03W .............................17 Diagnostic Procedure ..............................................116
Hydraulic Control Circuit............................................18 Component Inspection.............................................118
RS
Shift Mechanism ........................................................19 DTC P0720 VEHICLE SPEED SENSOR.A/T
Control System ..........................................................28 (REVOLUTION SENSOR) ...........................................119
Control Mechanism....................................................29 Description ...............................................................119 BT
Control Valve .............................................................34 Wiring Diagram - AT - VSSA/T ................................121
ON BOARD DIAGNOSTIC SYSTEM Diagnostic Procedure ..............................................122
DESCRIPTION ...............................................................36 DTC P0725 ENGINE SPEED SIGNAL .......................124 HA
Introduction ................................................................36 Description ...............................................................124
OBD-II Function for A/T System................................36 Wiring Diagram - AT - ENGSS ................................125
One or Two Trip Detection Logic of OBD-II ..............36 Diagnostic Procedure ..............................................126
SC
OBD-II Diagnostic Trouble Code (DTC) ....................36 DTC P0731 A/T 1ST GEAR FUNCTION ....................128
Malfunction Indicator Lamp (MIL)..............................40 Description ...............................................................128 EL
CONSULT-II ...............................................................40 Wiring Diagram - AT - 1ST ......................................131
TROUBLE DIAGNOSIS - INTRODUCTION..................56 Diagnostic Procedure ..............................................132
Introduction ................................................................56 Component Inspection.............................................133 IDX
Work Flow..................................................................60 DTC P0732 A/T 2ND GEAR FUNCTION....................135
TROUBLE DIAGNOSIS - BASIC INSPECTION ...........62 Description ...............................................................135
A/T Fluid Check .........................................................62 Wiring Diagram - AT - 2ND......................................138
Stall Test ....................................................................62 Diagnostic Procedure ..............................................139
Line Pressure Test.....................................................66 Component Inspection.............................................140
Road Test...................................................................67 DTC P0733 A/T 3RD GEAR FUNCTION....................141
CONTENTS (Cont'd)
Description ...............................................................141 DTC VHCL SPEED SEN.MTR VEHICLE SPEED
Wiring Diagram - AT - 3RD......................................144 SENSOR.MTR..............................................................215
Diagnostic Procedure ..............................................145 Description ...............................................................215
Component Inspection.............................................146 Wiring Diagram - AT - VSSMTR..............................217
DTC P0734 A/T 4TH GEAR FUNCTION ....................147 Diagnostic Procedure ..............................................218
Description ...............................................................147 DTC CONTROL UNIT (RAM), CONTROL UNIT
Wiring Diagram - AT - 4TH ......................................151 (ROM)...........................................................................219
Diagnostic Procedure ..............................................152 Description ...............................................................219
Component Inspection.............................................156 Diagnostic Procedure ..............................................219
DTC P0740 TORQUE CONVERTER CLUTCH DTC CONTROL UNIT (EEP ROM) .............................221
SOLENOID VALVE......................................................157 Description ...............................................................221
Description ...............................................................157 Diagnostic Procedure ..............................................222
Wiring Diagram - AT - TCV......................................159 TROUBLE DIAGNOSES FOR SYMPTOMS ...............223
Diagnostic Procedure ..............................................160 Wiring Diagram - AT - NONDTC .............................223
Component Inspection.............................................162 1. O/D OFF Indicator Lamp Does Not Come On....225
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) ....163 2. Engine Cannot Be Started In P and N
Description ...............................................................163 Position ....................................................................228
Wiring Diagram - AT - TCCSIG ...............................166 3. In P Position, Vehicle Moves Forward Or
Diagnostic Procedure ..............................................167 Backward When Pushed .........................................229
Component Inspection.............................................173 4. In N Position, Vehicle Moves ...........................230
DTC P0745 LINE PRESSURE SOLENOID VALVE ...174 5. Large Shock. N -> R Position .......................232
Description ...............................................................174 6. Vehicle Does Not Creep Backward In R
Wiring Diagram - AT - LPSV....................................176 Position ....................................................................234
Diagnostic Procedure ..............................................177 7. Vehicle Does Not Creep Forward In D, 2
Component Inspection.............................................180 Or 1 Position.........................................................237
DTC P0750 SHIFT SOLENOID VALVE A ..................181 8. Vehicle Cannot Be Started From D1 ...................240
Description ...............................................................181 9. A/T Does Not Shift: D1 -> D2 Or Does Not
Wiring Diagram - AT - SSV/A ..................................183 Kickdown: D4 -> D2..................................................243
Diagnostic Procedure ..............................................184 10. A/T Does Not Shift: D2 -> D3.............................246
Component Inspection.............................................186 11. A/T Does Not Shift: D3 -> D4 .............................249
DTC P0755 SHIFT SOLENOID VALVE B ..................187 12. A/T Does Not Perform Lock-up .........................252
Description ...............................................................187 13. A/T Does Not Hold Lock-up Condition ..............254
Wiring Diagram - AT - SSV/B ..................................189 14. Lock-up Is Not Released...................................256
Diagnostic Procedure ..............................................190 15. Engine Speed Does Not Return To Idle (Light
Component Inspection.............................................192 Braking D4 -> D3).....................................................257
DTC P1705 THROTTLE POSITION SENSOR ...........193 16. Vehicle Does Not Start From D1 .......................259
Description ...............................................................193 17. A/T Does Not Shift: D4 -> D3, When
Wiring Diagram - AT - TPS......................................196 Overdrive Control Switch ON -> OFF ...............260
Diagnostic Procedure ..............................................197 18. A/T Does Not Shift: D3 -> 22, When Selector
Component Inspection.............................................201 Lever D -> 2 Position.........................................261
DTC P1760 OVERRUN CLUTCH SOLENOID 19. A/T Does Not Shift: 22 -> 11, When Selector
VALVE..........................................................................202 Lever 2 -> 1 Position .........................................262
Description ...............................................................202 20. Vehicle Does Not Decelerate By Engine
Wiring Diagram - AT - OVRCSV..............................204 Brake........................................................................263
Diagnostic Procedure ..............................................205 21. TCM Self-diagnosis Does Not Activate (PNP,
Component Inspection.............................................207 Overdrive Control and Throttle Position Switches
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP Circuit Checks) ........................................................263
SENSOR CIRCUIT AND TCM POWER SOURCE) ....208 A/T SHIFT LOCK SYSTEM.........................................272
Description ...............................................................208 Description ...............................................................272
Wiring Diagram - AT - BA/FTS ................................210 Shift Lock System Electrical Parts Location............272
Diagnostic Procedure ..............................................211 Wiring Diagram - SHIFT -........................................273
Component Inspection.............................................214 Diagnostic Procedure ..............................................274
AT-2
CONTENTS (Cont'd)
KEY INTERLOCK CABLE ..........................................278 Final Drive................................................................361 GI
Components.............................................................278 ASSEMBLY..................................................................368
Removal...................................................................278 Assembly (1)............................................................368
Installation................................................................279 Adjustment (1) .........................................................369 MA
ON-VEHICLE SERVICE ..............................................280 Assembly (2)............................................................374
Control Valve Assembly and Accumulators.............280 Adjustment (2) .........................................................378
Control Cable Adjustment........................................281 Assembly (3)............................................................382
EM
Park/Neutral Position (PNP) Switch Adjustment .....281 Assembly (4)............................................................384
Differential Side Oil Seal Replacement ...................282 SERVICE DATA AND SPECIFICATIONS (SDS) .......389 LC
Revolution Sensor Replacement .............................282 General Specifications.............................................389
REMOVAL AND INSTALLATION ...............................283 Shift Schedule..........................................................389
Removal...................................................................283 Stall Revolution........................................................389 EC
Installation................................................................284 Line Pressure...........................................................389
OVERHAUL .................................................................286 Control Valves..........................................................390
Components.............................................................286 Clutch and Brakes ...................................................390 FE
Oil Channel ..............................................................289 Clutch and Brake Return Springs............................392
Locations of Adjusting Shims, Needle Bearings, Oil Pump ..................................................................392 CL
Thrust Washers and Snap Rings ............................290 Input Shaft ...............................................................393
DISASSEMBLY............................................................291 Planetary Carrier......................................................393
REPAIR FOR COMPONENT PARTS .........................305 Final Drive................................................................393 MT
Manual Shaft............................................................305 Reduction Pinion Gear ............................................396
Oil Pump ..................................................................308 Output Shaft.............................................................398
Control Valve Assembly...........................................312 Bearing Retainer......................................................398
Control Valve Upper Body .......................................321 Total End Play..........................................................399
Control Valve Lower Body .......................................325 Reverse Clutch End Play ........................................399
AX
Reverse Clutch ........................................................327 Accumulator .............................................................399
High Clutch ..............................................................331 Band Servo ..............................................................399
Forward Clutch and Overrun Clutch........................336 Removal and Installation .........................................400 SU
Low & Reverse Brake..............................................343 Shift Solenoid Valves...............................................400
Rear Internal Gear, Forward Clutch Hub and Solenoid Valves .......................................................400
Overrun Clutch Hub.................................................347 A/T Fluid Temperature Sensor.................................400 BR
Output Shaft, Idler Gear, Reduction Pinion Gear Revolution Sensor ...................................................400
and Bearing Retainer...............................................351 Dropping Resistor ....................................................400
Band Servo Piston Assembly ..................................356
ST
RS
BT
HA
SC
EL
IDX
AT-3
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC
Alphabetical & P No. Index for DTC NCAT0001
ALPHABETICAL INDEX FOR DTC NCAT0001S01
DTC
Items
CONSULT-II Reference page
(CONSULT-II screen terms)
GST*1
A/T 1ST GR FNCTN P0731 AT-128
A/T 2ND GR FNCTN P0732 AT-135
A/T 3RD GR FNCTN P0733 AT-141
A/T 4TH GR FNCTN P0734 AT-147
A/T TCC S/V FNCTN P0744 AT-163
ATF TEMP SEN/CIRC P0710 AT-113
ENGINE SPEED SIG P0725 AT-124
L/PRESS SOL/CIRC P0745 AT-174
O/R CLTCH SOL/CIRC P1760 AT-202
PNP SW/CIRC P0705 AT-107
SFT SOL A/CIRC*2 P0750 AT-181
SFT SOL B/CIRC*2 P0755 AT-187
TCC SOLENOID/CIRC P0740 AT-157
TP SEN/CIRC A/T*2 P1705 AT-193
VEH SPD SEN/CIR AT*3 P0720 AT-119
*1: These numbers are 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.
AT-4
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC (Cont'd)
P NO. INDEX FOR DTC =NCAT0001S02
DTC GI
Items
CONSULT-II Reference page
(CONSULT-II screen terms)
GST*1
MA
P0705 PNP SW/CIRC AT-107
P0710 ATF TEMP SEN/CIRC AT-113
EM
P0720 VEH SPD SEN/CIR AT*3 AT-119
P0725 ENGINE SPEED SIG AT-124
LC
P0731 A/T 1ST GR FNCTN AT-128
P0732 A/T 2ND GR FNCTN AT-135 EC
P0733 A/T 3RD GR FNCTN AT-141
P0734 A/T 4TH GR FNCTN AT-147 FE
P0740 TCC SOLENOID/CIRC AT-157
P0744 A/T TCC S/V FNCTN AT-163 CL
P0745 L/PRESS SOL/CIRC AT-174
P0750 SFT SOL A/CIRC*2 AT-181 MT
P0755 SFT SOL B/CIRC*2 AT-187
P1705 TP SEN/CIRC A/T*2 AT-193
P1760 O/R CLTCH SOL/CIRC AT-202
*1: These numbers are prescribed by SAE J2012.
AX
*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. SU
BR
ST
RS
BT
HA
SC
EL
IDX
AT-5
PRECAUTIONS
Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT PRE-TENSIONER" NCAT0220
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER" used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to INFINITI G20 is as follows:
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