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AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
A
AUTOMATIC TRANSMISSION
SECTION AT B
AT
D
E
CONTENTS
INDEX FOR DTC ....................................................... 5 . Accurate Repair ..................................................... 55
. F
Alphabetical Index ................................................... 5
. A/T Electrical Parts Location ................................. 60 .
DTC No. Index ........................................................ 6
. Circuit Diagram ...................................................... 61
.
PRECAUTIONS ......................................................... 7 . Wiring Diagram -- AT -- ....................................... 62 . G
Precautions for Supplemental Restraint System Inspections Before Trouble Diagnosis ................... 71 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Check Before Engine is Started ............................. 75 .
SIONER" ................................................................. 7
. Check at Idle .......................................................... 75
.
H
Precautions for On Board Diagnostic (OBD) System Cruise Test - Part 1 ................................................ 76
.
of A/T and Engine ................................................... 7. Cruise Test - Part 2 ................................................ 78
.
Precautions ............................................................. 7
. Cruise Test - Part 3 ................................................ 79
.
Service Notice or Precautions ................................. 8 . Vehicle Speed When Shifting Gears ..................... 80 . I
Wiring Diagrams and Trouble Diagnosis ................. 9 . Vehicle Speed When Performing and Releasing
PREPARATION ........................................................ 10 . Complete Lock-up ................................................. 80 .
Special Service Tools ............................................ 10 . Vehicle Speed When Performing and Releasing J
Commercial Service Tools ......................................11 . Slip Lock-up ........................................................... 81
.
A/T FLUID ................................................................ 12
. Symptom Chart ...................................................... 82
.
Changing A/T Fluid ............................................... 12 . TCM Input/Output Signal Reference Values ........ 107 .
K
Checking A/T Fluid ................................................ 12 . CONSULT-II ......................................................... 108
.
A/T CONTROL SYSTEM ......................................... 14 . Diagnostic Procedure Without CONSULT-II ........ 120 .
Cross-Sectional View (2WD Models) .................... 14 . DTC U1000 CAN COMMUNICATION LINE ........... 122 .
Cross-Sectional View (AWD Models) .................... 15 . Description ........................................................... 122
. L
Shift Mechanism .................................................... 16. On Board Diagnosis Logic ................................... 122 .
TCM Function ........................................................ 27
. Possible Cause .................................................... 122
.
CAN Communication ............................................. 28 . DTC Confirmation Procedure .............................. 122 . M
Input/Output Signal of TCM ................................... 42 . Diagnostic Procedure .......................................... 123 .
Line Pressure Control ........................................... 43 . DTC P0615 START SIGNAL CIRCUIT .................. 124 .
Shift Control .......................................................... 44
. Description ........................................................... 124
.
Lock-Up Control .................................................... 45. CONSULT-II Reference Value ............................. 124 .
Engine Brake Control ............................................ 46 . On Board Diagnosis Logic ................................... 124 .
Control Valve ......................................................... 47
. Possible Cause .................................................... 124
.
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 49 . DTC Confirmation Procedure .............................. 124 .
Introduction ........................................................... 49
. Diagnostic Procedure .......................................... 125 .
OBD-II Function for A/T System ............................ 49 . DTC P0705 PARK/NEUTRAL POSITION SWITCH. 127
One or Two Trip Detection Logic of OBD-II ........... 49 . Description ........................................................... 127
.
OBD-II Diagnostic Trouble Code (DTC) ................ 49 . CONSULT-II Reference Value ............................. 127 .
Malfunction Indicator Lamp (MIL) .......................... 52 . On Board Diagnosis Logic ................................... 127 .
TROUBLE DIAGNOSIS ........................................... 53 . Possible Cause .................................................... 127
.
DTC Inspection Priority Chart ............................... 53 . DTC Confirmation Procedure .............................. 127 .
Fail-Safe ................................................................ 53
. Diagnostic Procedure .......................................... 128 .
How To Perform Trouble Diagnosis For Quick and DTC P0720 VEHICLE SPEED SENSOR A/T (REV-
Revision; 2004 April AT-1 2003 FX
OLUTION SENSOR) .............................................. 129 . Description ........................................................... 144
.
Description ........................................................... 129
. On Board Diagnosis Logic ................................... 144 .
CONSULT-II Reference Value ............................. 129 . Possible Cause .................................................... 144.
On Board Diagnosis Logic ................................... 129 . DTC Confirmation Procedure ............................... 144 .
Possible Cause .................................................... 129 . Diagnostic Procedure ........................................... 144 .
DTC Confirmation Procedure .............................. 129 . DTC P1705 THROTTLE POSITION SENSOR ....... 145 .
Diagnostic Procedure .......................................... 130 . Description ........................................................... 145
.
DTC P0725 ENGINE SPEED SIGNAL .................. 131 . On Board Diagnosis Logic ................................... 145 .
Description ........................................................... 131
. Possible Cause .................................................... 145.
CONSULT-II Reference Value ............................. 131 . DTC Confirmation Procedure ............................... 145 .
On Board Diagnosis Logic ................................... 131 . Diagnostic Procedure ........................................... 145 .
Possible Cause .................................................... 131 . DTC P1710 A/T FLUID TEMPERATURE SENSOR
DTC Confirmation Procedure .............................. 131 . CIRCUIT ................................................................. 147
.
Diagnostic Procedure .......................................... 131 . Description ........................................................... 147
.
DTC P0740 TORQUE CONVERTER CLUTCH CONSULT-II Reference Value .............................. 147 .
SOLENOID VALVE ................................................ 133 . On Board Diagnosis Logic ................................... 147 .
Description ........................................................... 133
. Possible Cause .................................................... 147.
CONSULT-II Reference Value ............................. 133 . DTC Confirmation Procedure ............................... 147 .
On Board Diagnosis Logic ................................... 133 . Diagnostic Procedure ........................................... 148 .
Possible Cause .................................................... 133 . DTC P1716 TURBINE REVOLUTION SENSOR ... 149 .
DTC Confirmation Procedure .............................. 133 . Description ........................................................... 149
.
Diagnostic Procedure .......................................... 134 . CONSULT-II Reference Value .............................. 149 .
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP). 135 On Board Diagnosis Logic ................................... 149 .
Description ........................................................... 135
. Possible Cause .................................................... 149.
CONSULT-II Reference Value ............................. 135 . DTC Confirmation Procedure ............................... 149 .
On Board Diagnosis Logic ................................... 135 . Diagnostic Procedure ........................................... 150 .
Possible Cause .................................................... 135 . DTC P1721 VEHICLE SPEED SENSOR MTR ...... 151 .
DTC Confirmation Procedure .............................. 135 . Description ........................................................... 151
.
Diagnostic Procedure .......................................... 136 . CONSULT-II Reference Value .............................. 151 .
DTC P0745 LINE PRESSURE SOLENOID VALVE. 137 On Board Diagnosis Logic ................................... 151 .
Description ........................................................... 137
. Possible Cause .................................................... 151.
CONSULT-II Reference Value ............................. 137 . DTC Confirmation Procedure ............................... 151 .
On Board Diagnosis Logic ................................... 137 . Diagnostic Procedure ........................................... 151 .
Possible Cause .................................................... 137 . DTC P1730 A/T INTERLOCK ................................ 153 .
DTC Confirmation Procedure .............................. 137 . Description ........................................................... 153
.
Diagnostic Procedure .......................................... 138 . On Board Diagnosis Logic ................................... 153 .
DTC P1701 TRANSMISSION CONTROL MODULE Possible Cause .................................................... 153.
(POWER SUPPLY) ................................................. 139 . DTC Confirmation Procedure ............................... 153 .
Description ........................................................... 139
. Judgement of A/T Interlock .................................. 154 .
On Board Diagnosis Logic ................................... 139 . Diagnostic Procedure ........................................... 154 .
Possible Cause .................................................... 139 . DTC P1731 A/T 1ST ENGINE BRAKING .............. 156 .
DTC Confirmation Procedure .............................. 139 . Description ........................................................... 156
.
Diagnostic Procedure .......................................... 140 . CONSULT-II Reference Value .............................. 156 .
DTC P1702 TRANSMISSION CONTROL MODULE On Board Diagnosis Logic ................................... 156 .
(RAM) ..................................................................... 142
. Possible Cause .................................................... 156.
Description ........................................................... 142
. DTC Confirmation Procedure ............................... 156 .
On Board Diagnosis Logic ................................... 142 . Diagnostic Procedure ........................................... 157 .
Possible Cause .................................................... 142 . DTC P1752 INPUT CLUTCH SOLENOID VALVE . 158
DTC Confirmation Procedure .............................. 142 . Description ........................................................... 158
.
Diagnostic Procedure .......................................... 142 . CONSULT-II Reference Value .............................. 158 .
DTC P1703 TRANSMISSION CONTROL MODULE On Board Diagnosis Logic ................................... 158 .
(ROM) ..................................................................... 143
. Possible Cause .................................................... 158.
Description ........................................................... 143
. DTC Confirmation Procedure ............................... 158 .
On Board Diagnosis Logic ................................... 143 . Diagnostic Procedure ........................................... 159 .
Possible Cause .................................................... 143 . DTC P1754 INPUT CLUTCH SOLENOID VALVE
DTC Confirmation Procedure .............................. 143 . FUNCTION ............................................................. 160
.
Diagnostic Procedure .......................................... 143 . Description ........................................................... 160
.
DTC P1704 TRANSMISSION CONTROL MODULE CONSULT-II Reference Value .............................. 160 .
(EEPROM) .............................................................. 144
. On Board Diagnosis Logic ................................... 160 .
Revision; 2004 April AT-2 2003 FX
Possible Cause ................................................... 160 . Description ........................................................... 176
.
DTC Confirmation Procedure .............................. 160 . CONSULT-II Reference Value ............................. 176 . A
Diagnostic Procedure .......................................... 161 . On Board Diagnosis Logic ................................... 176 .
DTC P1757 FRONT BRAKE SOLENOID VALVE . 162 Possible Cause .................................................... 176
.
Description .......................................................... 162
. DTC Confirmation Procedure .............................. 176 . B
CONSULT-II Reference Value ............................. 162 . Diagnostic Procedure .......................................... 177 .
On Board Diagnosis Logic .................................. 162 . DTC P1815 MANUAL MODE SWITCH ................. 178 .
Possible Cause ................................................... 162 . Description ........................................................... 178
.
DTC Confirmation Procedure .............................. 162 . CONSULT-II Reference Value in Data Monitor Mode AT
Diagnostic Procedure .......................................... 163 . . 178
DTC P1759 FRONT BRAKE SOLENOID VALVE On Board Diagnosis Logic ................................... 178 .
FUNCTION ............................................................. 164
. Possible Cause .................................................... 178
. D
Description .......................................................... 164
. DTC Confirmation Procedure .............................. 178 .
CONSULT-II Reference Value ............................. 164 . Diagnostic Procedure .......................................... 178 .
On Board Diagnosis Logic .................................. 164 . Component Inspection ......................................... 180 . E
Possible Cause ................................................... 164 . Position Indicator Lamp ....................................... 180 .
DTC Confirmation Procedure .............................. 164 . DTC P1841 ATF PRESSURE SWITCH 1 .............. 181 .
Diagnostic Procedure .......................................... 165 . Description ........................................................... 181
.
DTC P1762 DIRECT CLUTCH SOLENOID VALVE 166 . CONSULT-II Reference Value ............................. 181 . F
Description .......................................................... 166
. On Board Diagnosis Logic ................................... 181 .
CONSULT-II Reference Value ............................. 166 . Possible Cause .................................................... 181
.
On Board Diagnosis Logic .................................. 166 . DTC Confirmation Procedure .............................. 181 . G
Possible Cause ................................................... 166 . Diagnostic Procedure .......................................... 182 .
DTC Confirmation Procedure .............................. 166 . DTC P1843 ATF PRESSURE SWITCH 3 .............. 183 .
Diagnostic Procedure .......................................... 167 . Description ........................................................... 183
. H
DTC P1764 DIRECT CLUTCH SOLENOID VALVE CONSULT-II Reference Value ............................. 183 .
FUNCTION ............................................................. 168
. On Board Diagnosis Logic ................................... 183 .
Description .......................................................... 168
. Possible Cause .................................................... 183
.
I
CONSULT-II Reference Value ............................. 168 . DTC Confirmation Procedure .............................. 183 .
On Board Diagnosis Logic .................................. 168 . Diagnostic Procedure .......................................... 184 .
Possible Cause ................................................... 168 . DTC P1845 ATF PRESSURE SWITCH 5 .............. 185 .
DTC Confirmation Procedure .............................. 168 . Description ........................................................... 185
. J
Diagnostic Procedure .......................................... 169 . CONSULT-II Reference Value ............................. 185 .
DTC P1767 HIGH AND LOW REVERSE CLUTCH On Board Diagnosis Logic ................................... 185 .
SOLENOID VALVE ................................................ 170 . Possible Cause .................................................... 185
. K
Description .......................................................... 170
. DTC Confirmation Procedure .............................. 185 .
CONSULT-II Reference Value ............................. 170 . Diagnostic Procedure .......................................... 186 .
On Board Diagnosis Logic .................................. 170 . DTC P1846 ATF PRESSURE SWITCH 6 .............. 187 . L
Possible Cause ................................................... 170 . Description ........................................................... 187
.
DTC Confirmation Procedure .............................. 170 . CONSULT-II Reference Value ............................. 187 .
Diagnostic Procedure .......................................... 171 . On Board Diagnosis Logic ................................... 187 .
DTC P1769 HIGH AND LOW REVERSE CLUTCH Possible Cause .................................................... 187
. M
SOLENOID VALVE FUNCTION ............................ 172 . DTC Confirmation Procedure .............................. 187 .
Description .......................................................... 172
. Diagnostic Procedure .......................................... 188 .
CONSULT-II Reference Value ............................. 172 . CLOSED THROTTLE POSITION AND WIDE OPEN
On Board Diagnosis Logic .................................. 172 . THROTTLE POSITION CIRCUIT ........................... 189 .
Possible Cause ................................................... 172 . Diagnostic Procedure .......................................... 189 .
DTC Confirmation Procedure .............................. 172 . BRAKE SIGNAL CIRCUIT ..................................... 190 .
Diagnostic Procedure .......................................... 173 . Diagnostic Procedure .......................................... 190 .
DTC P1772 LOW COAST BRAKE SOLENOID TROUBLE DIAGNOSIS FOR SYMPTOMS ........... 191 .
VALVE .................................................................... 174
. A/T CHECK Indicator Lamp Does Not Come On . 191
Description .......................................................... 174
. Engine Cannot Be Started In "P" or "N" Position . 192
CONSULT-II Reference Value ............................. 174 . In "P" Position, Vehicle Moves When Pushed ..... 193 .
On Board Diagnosis Logic .................................. 174 . In "N" Position, Vehicle Moves ............................. 194 .
Possible Cause ................................................... 174 . Large Shock ("N" to "D" Position) ........................ 195 .
DTC Confirmation Procedure .............................. 174 . Vehicle Does Not Creep Backward In "R" Position 198 .
Diagnostic Procedure .......................................... 175 . Vehicle Does Not Creep Forward In "D" Position . 201
DTC P1774 LOW COAST BRAKE SOLENOID Vehicle Cannot Be Started From D1 .................... 204 .
VALVE FUNCTION ................................................ 176 . A/T Does Not Shift: D1 D2 ............................... 206 .
Revision; 2004 April AT-3 2003 FX
A/T Does Not Shift: D2 D3 ............................... 209 . Removal and Installation (2WD Models) .............. 269 .
A/T Does Not Shift: D3 D4 ............................... 211 . Removal and Installation (AWD Models) ............. 272 .
A/T Does Not Shift: D4 D5 ............................... 214 . OVERHAUL ............................................................ 277
.
A/T Does Not Perform Lock-Up ........................... 216 . Components ......................................................... 277
.
A/T Does Not Hold Lock-Up Condition ................ 219 . Oil Channel .......................................................... 287
.
Lock-Up Is Not Released ..................................... 220 . Locations of Adjusting Shims, Needle Bearings,
Engine Speed Does Not Return To Idle ............... 221 . Thrust Washers and Snap Rings ......................... 289 .
Cannot Be Changed to Manual Mode ................. 222 . DISASSEMBLY ...................................................... 291 .
A/T Does Not Shift: 5th Gear 4th Gear ........... 223 . Disassembly ......................................................... 291
.
A/T Does Not Shift: 4th Gear 3rd Gear ........... 225 . REPAIR FOR COMPONENT PARTS ..................... 308 .
A/T Does Not Shift: 3rd Gear 2nd Gear .......... 227 . Oil Pump .............................................................. 308
.
A/T Does Not Shift: 2nd Gear 1st Gear ........... 229 . Front Sun Gear, 3rd One-Way Clutch .................. 311 .
Vehicle Does Not Decelerate By Engine Brake ... 231 . Front Carrier, Input Clutch, Rear Internal Gear .... 313 .
SHIFT CONTROL SYSTEM ................................... 233 . Mid Sun Gear, Rear Sun Gear, High and Low
Control Device Removal and Installation ............. 233 . Reverse Clutch Hub ............................................. 319 .
Adjustment of A/T Position .................................. 234 . High and Low Reverse Clutch ............................. 324 .
Checking of A/T Position ..................................... 234 . Direct Clutch ........................................................ 327
.
A/T SHIFT LOCK SYSTEM .................................... 235 . ASSEMBLY ............................................................ 329
.
Description ........................................................... 235
. Assembly (1) ........................................................ 329
.
Shift Lock System Electrical Parts Location ........ 235 . Adjustment ........................................................... 341
.
Wiring Diagram -- AT -- SHIFT .......................... 236 . Assembly (2) ........................................................ 343
.
Diagnostic Procedure .......................................... 237 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 351 .
KEY INTERLOCK CABLE ..................................... 239 . General Specifications ......................................... 351 .
Components ........................................................ 239 . Vehicle Speed When Shifting Gears .................... 351 .
Removal .............................................................. 240
. Vehicle Speed When Performing and Releasing
Installation ............................................................ 241
. Complete Lock-up ................................................ 352 .
ON-VEHICLE SERVICE ......................................... 242 . Vehicle Speed When Performing and Releasing
Control Valve with TCM and A/T Fluid Temperature Slip Lock-up ......................................................... 352
.
Sensor 2 .............................................................. 242
. Stall Speed ........................................................... 353
.
Parking Components (2WD Models Only) ........... 254 . Line Pressure ....................................................... 353
.
Rear Oil Seal ....................................................... 261. A/T Fluid Temperature Sensor ............................. 353 .
Revolution Sensor Components (2WD Models Turbine Revolution Sensor ................................... 353 .
Only) .................................................................... 262
. Vehicle Speed Sensor A/T (Revolution Sensor) .. 353 .
AIR BREATHER HOSE .......................................... 267 . Reverse Brake ..................................................... 353
.
Removal and Installation ..................................... 267 . Total End Play ...................................................... 353
.
TRANSMISSION ASSEMBLY ............................... 269 .
Revision; 2004 April AT-4 2003 FX
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. Refer to B
AT-122 .
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-156
D
ATF PRES SW 1/CIRC -- P1841 AT-181
ATF PRES SW 3/CIRC -- P1843 AT-183
ATF PRES SW 5/CIRC -- P1845 AT-185 E
ATF PRES SW 6/CIRC -- P1846 AT-187
A/T INTERLOCK P1730 P1730 AT-153
F
A/T TCC S/V FNCTN P0744 P0744 AT-135
ATF TEMP SEN/CIRC P0710 P1710 AT-147
CAN COMM CIRCUIT U1000 U1000 AT-122 G
D/C SOLENOID/CIRC P1762 P1762 AT-166
D/C SOLENOID FNCTN P1764 (*3) P1764 AT-168
ENGINE SPEED SIG P0725 (*2) P0725 AT-131
H
FR/B SOLENOID/CIRC P1757 P1757 AT-162
FR/B SOLENOID FNCT P1759 P1759 AT-164
I
HLR/C SOL/CIRC P1767 P1767 AT-170
HLR/C SOL FNCTN P1769 (*3) P1769 AT-172
I/C SOLENOID/CIRC P1752 P1752 AT-158 J
I/C SOLENOID FNCTN P1754 (*3) P1754 AT-160
L/PRESS SOL/CIRC P0745 P0745 AT-137
K
LC/B SOLENOID/CIRC P1772 P1772 AT-174
LC/B SOLENOID FNCT P1774 P1774 AT-176
MANU MODE SW/CIR -- P1815 AT-178 L
PNP SW/CIRC P0705 P0705 AT-127
STARTER RELAY/CIRC -- P0615 AT-124
M
TCC SOLENOID/CIRC P0740 P0740 AT-133
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