Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 G50 FY33 1994-1996.1998-2000 Approved 2000.5_Q45 at
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EXIT
AUTOMATIC TRANSMISSION
AT
GI
SECTION MA
EM
LC
CONTENTS
EC
DIAGNOSTIC TROUBLE CODE INDEX.........................3 TCM Terminals and Reference Value........................77
Alphabetical & P No. Index for DTC ...........................3 TROUBLE DIAGNOSIS FOR DTC P0705....................81 FE
PRECAUTIONS AND PREPARATION............................4 Park/Neutral Position (PNP) Switch ..........................81
Precautions for Supplemental Restraint System TROUBLE DIAGNOSIS FOR DTC P0710....................85
(SRS) AIR BAG and SEAT BELT A/T Fluid Temperature Sensor...................................85
PRE-TENSIONER ......................................................4 TROUBLE DIAGNOSIS FOR DTC P0720....................89
Precautions for On Board Diagnostic (OBD) Vehicle Speed SensorA/T (Revolution sensor) ........89
System of A/T and Engine...........................................4 TROUBLE DIAGNOSIS FOR DTC P0725....................92
PD
Precautions ..................................................................5 Engine Speed Signal .................................................92
Service Notice or Precautions .....................................6 TROUBLE DIAGNOSIS FOR DTC P0731....................95 FA
Special Service Tools ..................................................8 A/T 1st Gear Function ...............................................95
OVERALL SYSTEM ......................................................10 TROUBLE DIAGNOSIS FOR DTC P0732..................100
A/T Electrical Parts Location .....................................10 A/T 2nd Gear Function ............................................100 RA
Circuit Diagram ..........................................................11 TROUBLE DIAGNOSIS FOR DTC P0733..................104
Wiring Diagram ..........................................................12 A/T 3rd Gear Function.............................................104
Cross-sectional View .................................................18
BR
TROUBLE DIAGNOSIS FOR DTC P0734..................108
Hydraulic Control Circuits ..........................................19 A/T 4th Gear Function .............................................108
Shift Mechanism ........................................................20 TROUBLE DIAGNOSIS FOR DTC P0740..................114 ST
Control System ..........................................................29 Torque Converter Clutch Solenoid Valve ................114
Control Mechanism....................................................31 TROUBLE DIAGNOSIS FOR DTC P0744..................118
Control Valve .............................................................36 A/T TCC S/V Function (Lock-up).............................118 RS
ON BOARD DIAGNOSTIC SYSTEM TROUBLE DIAGNOSIS FOR DTC P0745..................125
DESCRIPTION ...............................................................38 Line Pressure Solenoid Valve .................................125
Introduction ................................................................38 BT
TROUBLE DIAGNOSIS FOR DTC P0750..................129
OBD-II Function for A/T System................................38 Shift Solenoid Valve A .............................................129
One or Two Trip Detection Logic of OBD-II ..............38 TROUBLE DIAGNOSIS FOR DTC P0755..................133 HA
OBD-II Diagnostic Trouble Code (DTC) ....................38 Shift Solenoid Valve B .............................................133
Malfunction Indicator Lamp (MIL)..............................42 TROUBLE DIAGNOSIS FOR DTC P1705..................137
CONSULT-II ...............................................................42 Throttle Position Sensor ..........................................137 EL
Diagnostic Procedure without CONSULT-II...............49 TROUBLE DIAGNOSIS FOR DTC P1760..................143
TROUBLE DIAGNOSIS - Introduction ........................54 Overrun Clutch Solenoid Valve ...............................143
Introduction ................................................................54 TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP
IDX
Diagnostic Worksheet................................................55 SEN ..............................................................................147
Work Flow..................................................................58 A/T Fluid Temperature Sensor Circuit and TCM
TROUBLE DIAGNOSIS - Basic Inspection ................59 Power Source ..........................................................147
A/T Fluid Check .........................................................59 TROUBLE DIAGNOSIS FOR VHCL SPEED
Stall Test ....................................................................59 SENMTR .....................................................................151
Line Pressure Test.....................................................62 Vehicle Speed SensorMTR ....................................151
Road Test...................................................................64 TROUBLE DIAGNOSIS FOR TURBINE REV ............154
TROUBLE DIAGNOSIS - General Description...........74 Turbine Revolution Sensor ......................................154
Symptom Chart..........................................................74 TROUBLE DIAGNOSIS FOR A/T COMM LINE .........157
EXIT
CONTENTS (Cont'd)
A/T Communication Line .........................................157 Shift Lock Control Unit Inspection Table .................192
CONTROL UNIT (RAM), CONTROL UNIT (ROM).....160 Component Check ...................................................193
TCM (Transmission Control Module).......................160 ON-VEHICLE SERVICE ..............................................195
TROUBLE DIAGNOSES FOR SYMPTOMS...............162 Control Valve Assembly and Accumulators.............195
1. O/D OFF Indicator Lamp Does Not Come On....162 Turbine Revolution Sensor Replacement................195
2. Engine Cannot Be Started In P and N Revolution Sensor Replacement .............................196
Position ....................................................................163 Rear Oil Seal Replacement.....................................196
3. In P Position, Vehicle Moves Forward Or Parking Pawl Components Inspection.....................196
Backward When Pushed .........................................163 Park/Neutral Position (PNP) Switch Adjustment .....197
4. In N Position, Vehicle Moves ...........................164 Manual Control Linkage Adjustment........................197
5. Large Shock. N -> R Position .......................165 REMOVAL AND INSTALLATION ................................198
6. Vehicle Does Not Creep Backward In R Removal...................................................................198
Position ....................................................................166 Installation................................................................199
7. Vehicle Does Not Creep Forward In D, 2 MAJOR OVERHAUL ...................................................201
Or 1 Position.........................................................167 Oil Channel ..............................................................203
8. Vehicle Cannot Be Started From D1 ...................168 Locations of Needle Bearings, Thrust Washers
9. A/T Does Not Shift: D1 -> D2 Or Does Not and Snap Rings .......................................................204
Kickdown: D4 -> D2..................................................169 DISASSEMBLY............................................................205
10. A/T Does Not Shift: D2 -> D3.............................170 REPAIR FOR COMPONENT PARTS..........................217
11. A/T Does Not Shift: D3 -> D4 .............................171 Oil Pump ..................................................................217
12. A/T Does Not Perform Lock-up .........................172 Control Valve Assembly...........................................221
13. A/T Does Not Hold Lock-up Condition ..............173 Control Valve Upper Body .......................................227
14. Lock-up Is Not Released...................................173 Control Valve Lower Body .......................................232
15. Engine Speed Does Not Return To Idle (Light Reverse Clutch ........................................................234
Braking D4 -> D3).....................................................174 High Clutch ..............................................................238
16. Vehicle Does Not Start From D1 .......................175 Forward and Overrun Clutches ...............................240
17. A/T Does Not Shift: D4 -> D3, When Low & Reverse Brake..............................................244
Overdrive Control Switch ON -> OFF ...............175 Forward Clutch Drum Assembly..............................248
18. A/T Does Not Shift: D3 -> 22, When Selector Rear Internal Gear and Forward Clutch Hub ..........250
Lever D -> 2 Position.........................................176 Band Servo Piston Assembly ..................................252
19. A/T Does Not Shift: 22 -> 11, When Selector Parking Pawl Components ......................................256
Lever 2 -> 1 Position .........................................176 ASSEMBLY..................................................................258
20. Vehicle Does Not Decelerate By Engine Assembly (1)............................................................258
Brake........................................................................177 Adjustment ...............................................................266
21. TCM Self-diagnosis Does Not Activate (Park/ Assembly (2)............................................................268
Neutral Position, Overdrive Control and Throttle SERVICE DATA AND SPECIFICATIONS (SDS) ........276
Position Switch Circuit Checks)...............................177 General Specifications.............................................276
TROUBLE DIAGNOSES - A/T Shift Lock System ...183 Specifications and Adjustment.................................276
A/T Shift Lock System .............................................183 Shift Solenoid Valves...............................................280
Wiring Diagram ........................................................184 Solenoid Valves .......................................................280
Diagnostic Procedure 1 ...........................................185 A/T Fluid Temperature Sensor.................................280
Diagnostic Procedure 2 ...........................................189 Revolution Sensor ...................................................280
Shift Lock Control Unit Inspection ...........................192 Dropping Resistor ....................................................280
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