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AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
A
AUTOMATIC TRANSMISSION
SECTION AT B
AT
D
E
CONTENTS
INDEX FOR DTC ....................................................... 5 . How To Perform Trouble Diagnosis For Quick and F
Alphabetical Index ................................................... 5
. Accurate Repair ..................................................... 45
.
DTC No. Index ........................................................ 6
. A/T Electrical Parts Location ................................. 50 .
PRECAUTIONS ......................................................... 7 . Circuit Diagram ...................................................... 51
. G
Precautions for Supplemental Restraint System Inspections Before Trouble Diagnosis ................... 52 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Check Before Engine is Started ............................. 56 .
SIONER" ................................................................. 7
. Check at Idle .......................................................... 56
.
H
Precautions for On Board Diagnostic (OBD) System Cruise Test - Part 1 ................................................ 58
.
of A/T and Engine ................................................... 7. Cruise Test - Part 2 ................................................ 60
.
Precautions ............................................................. 8
. Cruise Test - Part 3 ................................................ 61
.
Service Notice or Precautions ................................. 9 . Vehicle Speed When Shifting Gears ..................... 62 . I
Wiring Diagrams and Trouble Diagnosis ................. 9 . Vehicle Speed When Performing and Releasing
PREPARATION ........................................................ 10 . Complete Lock-up ................................................. 63 .
Special Service Tools ............................................ 10 . Vehicle Speed When Performing and Releasing J
Commercial Service Tools ......................................11 . Slip Lock-up ........................................................... 64
.
A/T FLUID ................................................................ 12
. Symptom Chart ...................................................... 65
.
Changing A/T Fluid ............................................... 12 . TCM Input/Output Signal Reference Values .......... 90 .
K
Checking A/T Fluid ................................................ 13 . CONSULT-II ........................................................... 91
.
A/T Fluid Cooler Cleaning ..................................... 15 . Diagnostic Procedure without CONSULT-II ......... 104 .
A/T CONTROL SYSTEM ......................................... 18 . DTC U1000 CAN COMMUNICATION LINE ........... 106 .
Cross-Sectional View (2WD models) .................... 18 . Description ........................................................... 106
. L
Cross-Sectional View (AWD models) .................... 19 . On Board Diagnosis Logic ................................... 106 .
Shift Mechanism .................................................... 20. Possible Cause .................................................... 106
.
TCM Function ........................................................ 31
. DTC Confirmation Procedure .............................. 106 . M
CAN Communication ............................................. 32 . Wiring Diagram -- AT -- CAN ............................. 107 .
Input/Output Signal of TCM ................................... 32 . Diagnostic Procedure .......................................... 108 .
Line Pressure Control ........................................... 33 . DTC P0615 START SIGNAL CIRCUIT .................. 109 .
Shift Control .......................................................... 34
. Description ........................................................... 109
.
Lock-up Control ..................................................... 35
. CONSULT-II Reference Value ............................. 109 .
Engine Brake Control ............................................ 36 . On Board Diagnosis Logic ................................... 109 .
Control Valve ......................................................... 37
. Possible Cause .................................................... 109
.
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 39 . DTC Confirmation Procedure .............................. 109 .
Introduction ........................................................... 39
. Wiring Diagram -- AT -- STSIG ......................... 110 .
OBD-II Function for A/T System ............................ 39 . Diagnostic Procedure ...........................................111 .
One or Two Trip Detection Logic of OBD-II ........... 39 . DTC P0700 TCM .................................................... 113 .
OBD-II Diagnostic Trouble Code (DTC) ................ 39 . Description ........................................................... 113
.
Malfunction Indicator Lamp (MIL) .......................... 42 . On Board Diagnosis Logic ................................... 113 .
TROUBLE DIAGNOSIS ........................................... 43 . Possible Cause .................................................... 113
.
DTC Inspection Priority Chart ............................... 43 . DTC Confirmation Procedure .............................. 113 .
Fail-safe ................................................................ 43
. Diagnostic Procedure .......................................... 113 .
Revision: 2004 November AT-1 2004.5 FX35/FX45
DTC P0705 PARK/NEUTRAL POSITION SWITCH. 114 DTC Confirmation Procedure ............................... 132 .
Description ........................................................... 114
. Diagnostic Procedure ........................................... 132 .
CONSULT-II Reference Value ............................. 114 . DTC P1705 THROTTLE POSITION SENSOR ....... 133 .
On Board Diagnosis Logic ................................... 114 . Description ........................................................... 133
.
Possible Cause .................................................... 114 . CONSULT-II Reference Value .............................. 133 .
DTC Confirmation Procedure .............................. 114 . On Board Diagnosis Logic ................................... 133 .
Wiring Diagram -- AT -- PNP/SW ...................... 115 . Possible Cause .................................................... 133.
Diagnostic Procedure .......................................... 116 . DTC Confirmation Procedure ............................... 133 .
DTC P0720 VEHICLE SPEED SENSOR A/T (REV- Diagnostic Procedure ........................................... 134 .
OLUTION SENSOR) .............................................. 118 . DTC P1710 A/T FLUID TEMPERATURE SENSOR
Description ........................................................... 118
. CIRCUIT ................................................................. 136
.
CONSULT-II Reference Value ............................. 118 . Description ........................................................... 136
.
On Board Diagnosis Logic ................................... 118 . CONSULT-II Reference Value .............................. 136 .
Possible Cause .................................................... 118 . On Board Diagnosis Logic ................................... 136 .
DTC Confirmation Procedure .............................. 118 . Possible Cause .................................................... 136.
Wiring Diagram -- AT -- VSSA/T ........................ 120 . DTC Confirmation Procedure ............................... 136 .
Diagnostic Procedure .......................................... 121 . Wiring Diagram -- AT -- FTS .............................. 137 .
DTC P0725 ENGINE SPEED SIGNAL .................. 123 . Diagnostic Procedure ........................................... 138 .
Description ........................................................... 123
. Component Inspection ......................................... 140 .
CONSULT-II Reference Value ............................. 123 . DTC P1716 TURBINE REVOLUTION SENSOR ... 141 .
On Board Diagnosis Logic ................................... 123 . Description ........................................................... 141
.
Possible Cause .................................................... 123 . CONSULT-II Reference Value .............................. 141 .
DTC Confirmation Procedure .............................. 123 . On Board Diagnosis Logic ................................... 141 .
Diagnostic Procedure .......................................... 124 . Possible Cause .................................................... 141.
DTC P0740 TORQUE CONVERTER CLUTCH DTC Confirmation Procedure ............................... 141 .
SOLENOID VALVE ................................................ 125 . Diagnostic Procedure ........................................... 142 .
Description ........................................................... 125
. DTC P1721 VEHICLE SPEED SENSOR MTR ...... 143 .
CONSULT-II Reference Value ............................. 125 . Description ........................................................... 143
.
On Board Diagnosis Logic ................................... 125 . CONSULT-II Reference Value .............................. 143 .
Possible Cause .................................................... 125 . On Board Diagnosis Logic ................................... 143 .
DTC Confirmation Procedure .............................. 125 . Possible Cause .................................................... 143.
Diagnostic Procedure .......................................... 126 . DTC Confirmation Procedure ............................... 143 .
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP). 127 Diagnostic Procedure ........................................... 144 .
Description ........................................................... 127
. DTC P1730 A/T INTERLOCK ................................ 145 .
CONSULT-II Reference Value ............................. 127 . Description ........................................................... 145
.
On Board Diagnosis Logic ................................... 127 . On Board Diagnosis Logic ................................... 145 .
Possible Cause .................................................... 127 . Possible Cause .................................................... 145.
DTC Confirmation Procedure .............................. 127 . DTC Confirmation Procedure ............................... 145 .
Diagnostic Procedure .......................................... 128 . Judgement of A/T Interlock .................................. 145 .
DTC P0745 LINE PRESSURE SOLENOID VALVE. 129 Diagnostic Procedure ........................................... 146 .
Description ........................................................... 129
. DTC P1731 A/T 1ST ENGINE BRAKING .............. 148 .
CONSULT-II Reference Value ............................. 129 . Description ........................................................... 148
.
On Board Diagnosis Logic ................................... 129 . CONSULT-II Reference Value .............................. 148 .
Possible Cause .................................................... 129 . On Board Diagnosis Logic ................................... 148 .
DTC Confirmation Procedure .............................. 129 . Possible Cause .................................................... 148.
Diagnostic Procedure .......................................... 130 . DTC Confirmation Procedure ............................... 148 .
DTC P1702 TRANSMISSION CONTROL MODULE Diagnostic Procedure ........................................... 149 .
(RAM) ..................................................................... 131
. DTC P1752 INPUT CLUTCH SOLENOID VALVE . 150
Description ........................................................... 131
. Description ........................................................... 150
.
On Board Diagnosis Logic ................................... 131 . CONSULT-II Reference Value .............................. 150 .
Possible Cause .................................................... 131 . On Board Diagnosis Logic ................................... 150 .
DTC Confirmation Procedure .............................. 131 . Possible Cause .................................................... 150.
Diagnostic Procedure .......................................... 131 . DTC Confirmation Procedure ............................... 150 .
DTC P1703 TRANSMISSION CONTROL MODULE Diagnostic Procedure ........................................... 151 .
(ROM) ..................................................................... 132
. DTC P1754 INPUT CLUTCH SOLENOID VALVE
Description ........................................................... 132
. FUNCTION ............................................................. 152
.
On Board Diagnosis Logic ................................... 132 . Description ........................................................... 152
.
Possible Cause .................................................... 132 . CONSULT-II Reference Value .............................. 152 .
On Board Diagnosis Logic ................................... 152 .
Revision: 2004 November AT-2 2004.5 FX35/FX45
Possible Cause ................................................... 152 . Description ........................................................... 168
.
DTC Confirmation Procedure .............................. 152 . CONSULT-II Reference Value ............................. 168 . A
Diagnostic Procedure .......................................... 153 . On Board Diagnosis Logic ................................... 168 .
DTC P1757 FRONT BRAKE SOLENOID VALVE . 154 Possible Cause .................................................... 168
.
Description .......................................................... 154
. DTC Confirmation Procedure .............................. 168 . B
CONSULT-II Reference Value ............................. 154 . Diagnostic Procedure .......................................... 169 .
On Board Diagnosis Logic .................................. 154 . DTC P1815 MANUAL MODE SWITCH ................. 170 .
Possible Cause ................................................... 154 . Description ........................................................... 170
.
DTC Confirmation Procedure .............................. 154 . CONSULT-II Reference Value in Data Monitor Mode AT
Diagnostic Procedure .......................................... 155 . . 170
DTC P1759 FRONT BRAKE SOLENOID VALVE On Board Diagnosis Logic ................................... 170 .
FUNCTION ............................................................. 156
. Possible Cause .................................................... 170
. D
Description .......................................................... 156
. DTC Confirmation Procedure .............................. 170 .
CONSULT-II Reference Value ............................. 156 . Wiring Diagram -- AT -- MMSW ........................ 171 .
On Board Diagnosis Logic .................................. 156 . Diagnostic Procedure .......................................... 173 . E
Possible Cause ................................................... 156 . Component Inspection ......................................... 174 .
DTC Confirmation Procedure .............................. 156 . A/T Indicator ........................................................ 175
.
Diagnostic Procedure .......................................... 157 . DTC P1841 ATF PRESSURE SWITCH 1 .............. 176 .
DTC P1762 DIRECT CLUTCH SOLENOID VALVE 158 . Description ........................................................... 176
. F
Description .......................................................... 158
. CONSULT-II Reference Value ............................. 176 .
CONSULT-II Reference Value ............................. 158 . On Board Diagnosis Logic ................................... 176 .
On Board Diagnosis Logic .................................. 158 . Possible Cause .................................................... 176
. G
Possible Cause ................................................... 158 . DTC Confirmation Procedure .............................. 176 .
DTC Confirmation Procedure .............................. 158 . Diagnostic Procedure .......................................... 177 .
Diagnostic Procedure .......................................... 159 . DTC P1843 ATF PRESSURE SWITCH 3 .............. 178 . H
DTC P1764 DIRECT CLUTCH SOLENOID VALVE Description ........................................................... 178
.
FUNCTION ............................................................. 160
. CONSULT-II Reference Value ............................. 178 .
Description .......................................................... 160
. On Board Diagnosis Logic ................................... 178 .
I
CONSULT-II Reference Value ............................. 160 . Possible Cause .................................................... 178
.
On Board Diagnosis Logic .................................. 160 . DTC Confirmation Procedure .............................. 178 .
Possible Cause ................................................... 160 . Diagnostic Procedure .......................................... 179 .
DTC Confirmation Procedure .............................. 160 . DTC P1845 ATF PRESSURE SWITCH 5 .............. 180 . J
Diagnostic Procedure .......................................... 161 . Description ........................................................... 180
.
DTC P1767 HIGH AND LOW REVERSE CLUTCH CONSULT-II Reference Value ............................. 180 .
SOLENOID VALVE ................................................ 162 . On Board Diagnosis Logic ................................... 180 . K
Description .......................................................... 162
. Possible Cause .................................................... 180
.
CONSULT-II Reference Value ............................. 162 . DTC Confirmation Procedure .............................. 180 .
On Board Diagnosis Logic .................................. 162 . Diagnostic Procedure .......................................... 181 . L
Possible Cause ................................................... 162 . DTC P1846 ATF PRESSURE SWITCH 6 .............. 182 .
DTC Confirmation Procedure .............................. 162 . Description ........................................................... 182
.
Diagnostic Procedure .......................................... 163 . CONSULT-II Reference Value ............................. 182 .
DTC P1769 HIGH AND LOW REVERSE CLUTCH On Board Diagnosis Logic ................................... 182 . M
SOLENOID VALVE FUNCTION ............................ 164 . Possible Cause .................................................... 182
.
Description .......................................................... 164
. DTC Confirmation Procedure .............................. 182 .
CONSULT-II Reference Value ............................. 164 . Diagnostic Procedure .......................................... 183 .
On Board Diagnosis Logic .................................. 164 . MAIN POWER SUPPLY AND GROUND CIRCUIT. 184
Possible Cause ................................................... 164 . Wiring Diagram -- AT -- MAIN ........................... 184 .
DTC Confirmation Procedure .............................. 164 . Diagnostic Procedure .......................................... 185 .
Diagnostic Procedure .......................................... 165 . CLOSED THROTTLE POSITION AND WIDE OPEN
DTC P1772 LOW COAST BRAKE SOLENOID THROTTLE POSITION CIRCUIT ........................... 188 .
VALVE .................................................................... 166
. CONSULT-II Reference Value ............................. 188 .
Description .......................................................... 166
. Diagnostic Procedure .......................................... 188 .
CONSULT-II Reference Value ............................. 166 . BRAKE SIGNAL CIRCUIT ..................................... 189 .
On Board Diagnosis Logic .................................. 166 . CONSULT-II Reference Value ............................. 189 .
Possible Cause ................................................... 166 . Diagnostic Procedure .......................................... 189 .
DTC Confirmation Procedure .............................. 166 . TROUBLE DIAGNOSIS FOR SYMPTOMS ........... 190 .
Diagnostic Procedure .......................................... 167 . Wiring Diagram -- AT -- NONDTC ..................... 190 .
DTC P1774 LOW COAST BRAKE SOLENOID A/T CHECK Indicator Lamp Does Not Come On . 193
VALVE FUNCTION ................................................ 168 . Engine Cannot Be Started In "P" or "N" Position . 194
Revision: 2004 November AT-3 2004.5 FX35/FX45
In "P" Position, Vehicle Moves When Pushed ..... 195 . AIR BREATHER HOSE .......................................... 269 .
In "N" Position, Vehicle Moves ............................. 196 . Removal and Installation ...................................... 269 .
Large Shock ("N" to "D" Position) ........................ 197 . TRANSMISSION ASSEMBLY ................................ 271 .
Vehicle Does Not Creep Backward In "R" Position. 200 Removal and Installation (2WD models) .............. 271 .
Vehicle Does Not Creep Forward In "D" Position . 203 Removal and Installation (AWD models) ............. 274 .
Vehicle Cannot Be Started From D1 .................... 206 . OVERHAUL ............................................................ 279
.
A/T Does Not Shift: D1 D2 ............................... 208 . Components ......................................................... 279
.
A/T Does Not Shift: D2 D3 ............................... 211 . Oil Channel .......................................................... 287
.
A/T Does Not Shift: D3 D4 ............................... 213 . Locations of Adjusting Shims, Needle Bearings,
A/T Does Not Shift: D4 D5 ............................... 216 . Thrust Washers and Snap Rings ......................... 289 .
A/T Does Not Perform Lock-up ........................... 218 . DISASSEMBLY ...................................................... 291 .
A/T Does Not Hold Lock-up Condition ................. 221 . Disassembly ......................................................... 291
.
Lock-up Is Not Released ..................................... 222 . REPAIR FOR COMPONENT PARTS ..................... 309 .
Engine Speed Does Not Return to Idle ............... 223 . Oil Pump .............................................................. 309
.
Cannot Be Changed to Manual Mode ................. 224 . Front Sun Gear, 3rd One-Way Clutch .................. 312 .
A/T Does Not Shift: 5th gear 4th gear ............. 225 . Front Carrier, Input Clutch, Rear Internal Gear .... 314 .
A/T Does Not Shift: 4th gear 3rd gear ............. 227 . Mid Sun Gear, Rear Sun Gear, High and Low
A/T Does Not Shift: 3rd gear 2nd gear ............ 229 . Reverse Clutch Hub ............................................. 319 .
A/T Does Not Shift: 2nd gear 1st gear ............ 231 . High and Low Reverse Clutch ............................. 324 .
Vehicle Does Not Decelerate by Engine Brake ... 233 . Direct Clutch ........................................................ 327
.
SHIFT CONTROL SYSTEM ................................... 235 . ASSEMBLY ............................................................ 329
.
Control Device Removal and Installation ............. 235 . Assembly (1) ........................................................ 329
.
Adjustment of A/T Position .................................. 236 . Adjustment ........................................................... 342
.
Checking of A/T Position ..................................... 236 . Assembly (2) ........................................................ 345
.
A/T SHIFT LOCK SYSTEM .................................... 237 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 352 .
Description ........................................................... 237
. General Specifications ......................................... 352 .
Shift Lock System Electrical Parts Location ........ 237 . Vehicle Speed When Shifting Gears .................... 352 .
Wiring Diagram -- AT -- SHIFT .......................... 238 . Vehicle Speed When Performing and Releasing
Diagnostic Procedure .......................................... 239 . Complete Lock-up ................................................ 353 .
KEY INTERLOCK CABLE ..................................... 241 . Vehicle Speed When Performing and Releasing
Components ........................................................ 241 . Slip Lock-up ......................................................... 354
.
Removal and Installation ..................................... 242 . Stall Speed ........................................................... 354
.
ON-VEHICLE SERVICE ......................................... 244 . Line Pressure ....................................................... 354
.
Control Valve with TCM and A/T Fluid Temperature A/T Fluid Temperature Sensor ............................. 354 .
Sensor 2 .............................................................. 244
. Turbine Revolution Sensor ................................... 355 .
Parking Components (2WD Models Only) ........... 256 . Vehicle Speed Sensor A/T (Revolution Sensor) .. 355 .
Rear Oil Seal ....................................................... 263. Reverse Brake ..................................................... 355
.
Revolution Sensor Components (2WD Models Total End Play ...................................................... 355
.
Only) .................................................................... 264
.
Revision: 2004 November AT-4 2004.5 FX35/FX45
INDEX FOR DTC
INDEX FOR DTC PFP:00024
A
Alphabetical Index ACS002L1
NOTE:
If DTC "U1000" is displayed with other DTC, first perform the trouble diagnosis for "DTC U1000 CAN B
COMMUNICATION LINE". Refer to AT-106 .
DTC
Items AT
OBD-II Except OBD-II Reference page
(CONSULT-II screen terms)
CONSULT-II GST (*1) CONSULT-II only "A/T"
A/T 1ST E/BRAKING -- P1731 AT-148
D
ATF PRES SW 1/CIRC -- P1841 AT-176
ATF PRES SW 3/CIRC -- P1843 AT-178
ATF PRES SW 5/CIRC -- P1845 AT-180 E
ATF PRES SW 6/CIRC -- P1846 AT-182
A/T INTERLOCK P1730 P1730 AT-145
F
A/T TCC S/V FNCTN P0744 P0744 AT-127
ATF TEMP SEN/CIRC P0710 P1710 AT-136
CAN COMM CIRCUIT U1000 U1000 AT-106 G
D/C SOLENOID/CIRC P1762 P1762 AT-158
D/C SOLENOID FNCTN P1764 (*3) P1764 AT-160
ENGINE SPEED SIG P0725 (*2) P0725 AT-123
H
FR/B SOLENOID/CIRC P1757 P1757 AT-154
FR/B SOLENOID FNCT P1759 P1759 AT-156
I
HLR/C SOL/CIRC P1767 P1767 AT-162
HLR/C SOL FNCTN P1769 (*3) P1769 AT-164
I/C SOLENOID/CIRC P1752 P1752 AT-150 J
I/C SOLENOID FNCTN P1754 (*3) P1754 AT-152
L/PRESS SOL/CIRC P0745 P0745 AT-129
K
LC/B SOLENOID/CIRC P1772 P1772 AT-166
LC/B SOLENOID FNCT P1774 P1774 AT-168
MANU MODE SW/CIR -- P1815 AT-170 L
PNP SW/CIRC P0705 P0705 AT-114
STARTER RELAY/CIRC -- P0615 AT-109
M
TCC SOLENOID/CIRC P0740 P0740 AT-125
TCM P0700(*2) P0700 AT-113
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