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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 ..................................................... 44
.
DTC No. Index ........................................................ 6
. A/T Electrical Parts Location ................................. 49 .
PRECAUTIONS ......................................................... 7 . Circuit Diagram ...................................................... 50
. G
Precautions for Supplemental Restraint System Inspections Before Trouble Diagnosis ................... 51 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Check Before Engine is Started ............................. 55 .
SIONER" ................................................................. 7
. Check at Idle .......................................................... 55
.
H
Precautions for On Board Diagnostic (OBD) System Cruise Test - Part 1 ................................................ 57
.
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 ................................................ 12 . CONSULT-II ........................................................... 91
.
A/T Fluid Cooler Cleaning ..................................... 14 . Diagnostic Procedure Without CONSULT-II ........ 103 .
A/T CONTROL SYSTEM ......................................... 17 . DTC U1000 CAN COMMUNICATION LINE ........... 105 .
Cross-Sectional View (2WD Models) .................... 17 . Description ........................................................... 105
. L
Cross-Sectional View (AWD Models) .................... 18 . On Board Diagnosis Logic ................................... 105 .
Shift Mechanism .................................................... 19. Possible Cause .................................................... 105
.
TCM Function ........................................................ 30
. DTC Confirmation Procedure .............................. 105 . M
CAN Communication ............................................. 31 . Wiring Diagram -- AT -- CAN ............................. 106 .
Input/Output Signal of TCM ................................... 31 . Diagnostic Procedure .......................................... 107 .
Line Pressure Control ........................................... 32 . DTC P0615 START SIGNAL CIRCUIT .................. 108 .
Shift Control .......................................................... 33
. Description ........................................................... 108
.
Lock-up Control ..................................................... 34
. CONSULT-II Reference Value ............................. 108 .
Engine Brake Control ............................................ 36 . On Board Diagnosis Logic ................................... 108 .
Control Valve ......................................................... 36
. Possible Cause .................................................... 108
.
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 38 . DTC Confirmation Procedure .............................. 108 .
Introduction ........................................................... 38
. Wiring Diagram -- AT -- STSIG ......................... 109 .
OBD-II Function for A/T System ............................ 38 . Diagnostic Procedure .......................................... 110 .
One or Two Trip Detection Logic of OBD-II ........... 38 . DTC P0705 PARK/NEUTRAL POSITION SWITCH. 112
OBD-II Diagnostic Trouble Code (DTC) ................ 38 . Description ........................................................... 112
.
Malfunction Indicator Lamp (MIL) .......................... 41 . CONSULT-II Reference Value ............................. 112 .
TROUBLE DIAGNOSIS ........................................... 42 . On Board Diagnosis Logic ................................... 112 .
DTC Inspection Priority Chart ............................... 42 . Possible Cause .................................................... 112
.
Fail-Safe ................................................................ 42
. DTC Confirmation Procedure .............................. 112 .
Revision: 2004 November AT-1 2004 FX35/FX45
Wiring Diagram -- AT -- PNP/SW ...................... 113 . Possible Cause .................................................... 134
.
Diagnostic Procedure .......................................... 114 . DTC Confirmation Procedure ............................... 134 .
DTC P0720 VEHICLE SPEED SENSOR A/T (REV- Diagnostic Procedure ........................................... 134 .
OLUTION SENSOR) .............................................. 116 . DTC P1704 TRANSMISSION CONTROL MODULE
Description ........................................................... 116
. (EEPROM) .............................................................. 135
.
CONSULT-II Reference Value ............................. 116 . Description ........................................................... 135
.
On Board Diagnosis Logic ................................... 116 . On Board Diagnosis Logic ................................... 135 .
Possible Cause .................................................... 116 . Possible Cause .................................................... 135
.
DTC Confirmation Procedure .............................. 116 . DTC Confirmation Procedure ............................... 135 .
Wiring Diagram -- AT -- VSSA/T ........................ 118 . Diagnostic Procedure ........................................... 135 .
Diagnostic Procedure .......................................... 119 . DTC P1705 THROTTLE POSITION SENSOR ....... 136 .
DTC P0725 ENGINE SPEED SIGNAL .................. 121 . Description ........................................................... 136
.
Description ........................................................... 121
. CONSULT-II Reference Value .............................. 136 .
CONSULT-II Reference Value ............................. 121 . On Board Diagnosis Logic ................................... 136 .
On Board Diagnosis Logic ................................... 121 . Possible Cause .................................................... 136
.
Possible Cause .................................................... 121 . DTC Confirmation Procedure ............................... 136 .
DTC Confirmation Procedure .............................. 121 . Diagnostic Procedure ........................................... 136 .
Diagnostic Procedure .......................................... 121 . DTC P1710 A/T FLUID TEMPERATURE SENSOR
DTC P0740 TORQUE CONVERTER CLUTCH CIRCUIT ................................................................. 139
.
SOLENOID VALVE ................................................ 123 . Description ........................................................... 139
.
Description ........................................................... 123
. CONSULT-II Reference Value .............................. 139 .
CONSULT-II Reference Value ............................. 123 . On Board Diagnosis Logic ................................... 139 .
On Board Diagnosis Logic ................................... 123 . Possible Cause .................................................... 139
.
Possible Cause .................................................... 123 . DTC Confirmation Procedure ............................... 139 .
DTC Confirmation Procedure .............................. 123 . Wiring Diagram -- AT -- FTS .............................. 140 .
Diagnostic Procedure .......................................... 124 . Diagnostic Procedure ........................................... 141 .
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP). 125 Component Inspection ......................................... 142 .
Description ........................................................... 125
. DTC P1716 TURBINE REVOLUTION SENSOR ... 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 P0745 LINE PRESSURE SOLENOID VALVE. 127 Diagnostic Procedure ........................................... 144 .
Description ........................................................... 127
. DTC P1721 VEHICLE SPEED SENSOR MTR ...... 145 .
CONSULT-II Reference Value ............................. 127 . Description ........................................................... 145
.
On Board Diagnosis Logic ................................... 127 . CONSULT-II Reference Value .............................. 145 .
Possible Cause .................................................... 127 . On Board Diagnosis Logic ................................... 145 .
DTC Confirmation Procedure .............................. 127 . Possible Cause .................................................... 145
.
Diagnostic Procedure .......................................... 128 . DTC Confirmation Procedure ............................... 145 .
DTC P1701 TRANSMISSION CONTROL MODULE Diagnostic Procedure ........................................... 146 .
(POWER SUPPLY) ................................................. 129 . DTC P1730 A/T INTERLOCK ................................ 147 .
Description ........................................................... 129
. Description ........................................................... 147
.
On Board Diagnosis Logic ................................... 129 . On Board Diagnosis Logic ................................... 147 .
Possible Cause .................................................... 129 . Possible Cause .................................................... 147
.
DTC Confirmation Procedure .............................. 129 . DTC Confirmation Procedure ............................... 147 .
Wiring Diagram -- AT -- POWER ....................... 130 . Judgement of A/T Interlock .................................. 147 .
Diagnostic Procedure .......................................... 131 . Diagnostic Procedure ........................................... 148 .
DTC P1702 TRANSMISSION CONTROL MODULE DTC P1731 A/T 1ST ENGINE BRAKING .............. 150 .
(RAM) ..................................................................... 133
. Description ........................................................... 150
.
Description ........................................................... 133
. CONSULT-II Reference Value .............................. 150 .
On Board Diagnosis Logic ................................... 133 . On Board Diagnosis Logic ................................... 150 .
Possible Cause .................................................... 133 . Possible Cause .................................................... 150
.
DTC Confirmation Procedure .............................. 133 . DTC Confirmation Procedure ............................... 150 .
Diagnostic Procedure .......................................... 133 . Diagnostic Procedure ........................................... 151 .
DTC P1703 TRANSMISSION CONTROL MODULE DTC P1752 INPUT CLUTCH SOLENOID VALVE . 152
(ROM) ..................................................................... 134
. Description ........................................................... 152
.
Description ........................................................... 134
. CONSULT-II Reference Value .............................. 152 .
On Board Diagnosis Logic ................................... 134 . On Board Diagnosis Logic ................................... 152 .
Revision: 2004 November AT-2 2004 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 P1754 INPUT CLUTCH SOLENOID VALVE Possible Cause .................................................... 168
.
FUNCTION ............................................................. 154
. DTC Confirmation Procedure .............................. 168 . B
Description .......................................................... 154
. Diagnostic Procedure .......................................... 169 .
CONSULT-II Reference Value ............................. 154 . DTC P1774 LOW COAST BRAKE SOLENOID
On Board Diagnosis Logic .................................. 154 . VALVE FUNCTION ................................................. 170 .
Possible Cause ................................................... 154 . Description ........................................................... 170
. AT
DTC Confirmation Procedure .............................. 154 . CONSULT-II Reference Value ............................. 170 .
Diagnostic Procedure .......................................... 155 . On Board Diagnosis Logic ................................... 170 .
DTC P1757 FRONT BRAKE SOLENOID VALVE . 156 Possible Cause .................................................... 170
. D
Description .......................................................... 156
. DTC Confirmation Procedure .............................. 170 .
CONSULT-II Reference Value ............................. 156 . Diagnostic Procedure .......................................... 171 .
On Board Diagnosis Logic .................................. 156 . DTC P1815 MANUAL MODE SWITCH ................. 172 . E
Possible Cause ................................................... 156 . Description ........................................................... 172
.
DTC Confirmation Procedure .............................. 156 . CONSULT-II Reference Value in Data Monitor Mode
Diagnostic Procedure .......................................... 157 . . 172
DTC P1759 FRONT BRAKE SOLENOID VALVE On Board Diagnosis Logic ................................... 172 . F
FUNCTION ............................................................. 158
. Possible Cause .................................................... 172
.
Description .......................................................... 158
. DTC Confirmation Procedure .............................. 172 .
CONSULT-II Reference Value ............................. 158 . Wiring Diagram -- AT -- MMSW ........................ 173 . G
On Board Diagnosis Logic .................................. 158 . Diagnostic Procedure .......................................... 175 .
Possible Cause ................................................... 158 . Component Inspection ......................................... 176 .
DTC Confirmation Procedure .............................. 158 . A/T Position Indicator .......................................... 177 . H
Diagnostic Procedure .......................................... 159 . DTC P1841 ATF PRESSURE SWITCH 1 .............. 178 .
DTC P1762 DIRECT CLUTCH SOLENOID VALVE 160 . Description ........................................................... 178
.
Description .......................................................... 160
. CONSULT-II Reference Value ............................. 178 .
I
CONSULT-II Reference Value ............................. 160 . On Board Diagnosis Logic ................................... 178 .
On Board Diagnosis Logic .................................. 160 . Possible Cause .................................................... 178
.
Possible Cause ................................................... 160 . DTC Confirmation Procedure .............................. 178 .
DTC Confirmation Procedure .............................. 160 . Diagnostic Procedure .......................................... 179 . J
Diagnostic Procedure .......................................... 161 . DTC P1843 ATF PRESSURE SWITCH 3 .............. 180 .
DTC P1764 DIRECT CLUTCH SOLENOID VALVE Description ........................................................... 180
.
FUNCTION ............................................................. 162
. CONSULT-II Reference Value ............................. 180 . K
Description .......................................................... 162
. On Board Diagnosis Logic ................................... 180 .
CONSULT-II Reference Value ............................. 162 . Possible Cause .................................................... 180
.
On Board Diagnosis Logic .................................. 162 . DTC Confirmation Procedure .............................. 180 . L
Possible Cause ................................................... 162 . Diagnostic Procedure .......................................... 181 .
DTC Confirmation Procedure .............................. 162 . DTC P1845 ATF PRESSURE SWITCH 5 .............. 182 .
Diagnostic Procedure .......................................... 163 . Description ........................................................... 182
.
DTC P1767 HIGH AND LOW REVERSE CLUTCH CONSULT-II Reference Value ............................. 182 . M
SOLENOID VALVE ................................................ 164 . On Board Diagnosis Logic ................................... 182 .
Description .......................................................... 164
. Possible Cause .................................................... 182
.
CONSULT-II Reference Value ............................. 164 . DTC Confirmation Procedure .............................. 182 .
On Board Diagnosis Logic .................................. 164 . Diagnostic Procedure .......................................... 183 .
Possible Cause ................................................... 164 . DTC P1846 ATF PRESSURE SWITCH 6 .............. 184 .
DTC Confirmation Procedure .............................. 164 . Description ........................................................... 184
.
Diagnostic Procedure .......................................... 165 . CONSULT-II Reference Value ............................. 184 .
DTC P1769 HIGH AND LOW REVERSE CLUTCH On Board Diagnosis Logic ................................... 184 .
SOLENOID VALVE FUNCTION ............................ 166 . Possible Cause .................................................... 184
.
Description .......................................................... 166
. DTC Confirmation Procedure .............................. 184 .
CONSULT-II Reference Value ............................. 166 . Diagnostic Procedure .......................................... 185 .
On Board Diagnosis Logic .................................. 166 . CLOSED THROTTLE POSITION AND WIDE OPEN
Possible Cause ................................................... 166 . THROTTLE POSITION CIRCUIT ........................... 186 .
DTC Confirmation Procedure .............................. 166 . CONSULT-II Reference Value ............................. 186 .
Diagnostic Procedure .......................................... 167 . Diagnostic Procedure .......................................... 186 .
DTC P1772 LOW COAST BRAKE SOLENOID BRAKE SIGNAL CIRCUIT ..................................... 187 .
VALVE .................................................................... 168
.
Revision: 2004 November AT-3 2004 FX35/FX45
CONSULT-II Reference Value ............................. 187 . Rear Oil Seal ........................................................ 259
.
Diagnostic Procedure .......................................... 187 . Revolution Sensor Components (2WD Models
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... 188 . Only) .................................................................... 260
.
Wiring Diagram -- AT -- NONDTC ..................... 188 . AIR BREATHER HOSE .......................................... 264 .
A/T CHECK Indicator Lamp Does Not Come On . 191 Removal and Installation ...................................... 264 .
Engine Cannot Be Started In "P" or "N" Position . 193 TRANSMISSION ASSEMBLY ................................ 266 .
In "P" Position, Vehicle Moves When Pushed ..... 193 . Removal and Installation (2WD Models) .............. 266 .
In "N" Position, Vehicle Moves ............................. 194 . Removal and Installation (AWD models) ............. 269 .
Large Shock ("N" to "D" Position) ........................ 195 . OVERHAUL ............................................................ 274 .
Vehicle Does Not Creep Backward In "R" Position. 198 Components ......................................................... 274 .
Vehicle Does Not Creep Forward In "D" Position . 201 Oil Channel .......................................................... 282
.
Vehicle Cannot Be Started From D1 .................... 203 . Locations of Adjusting Shims, Needle Bearings,
A/T Does Not Shift: D1 D2 ............................... 206 . Thrust Washers and Snap Rings ......................... 284 .
A/T Does Not Shift: D2 D3 ............................... 208 . DISASSEMBLY ...................................................... 286 .
A/T Does Not Shift: D3 D4 ............................... 211 . Disassembly ......................................................... 286.
A/T Does Not Shift: D4 D5 ............................... 213 . REPAIR FOR COMPONENT PARTS ..................... 303 .
A/T Does Not Perform Lock-up ........................... 216 . Oil Pump .............................................................. 303
.
A/T Does Not Hold Lock-up Condition ................. 218 . Front Sun Gear, 3rd One-Way Clutch .................. 306 .
Lock-up Is Not Released ..................................... 220 . Front Carrier, Input Clutch, Rear Internal Gear .... 308 .
Engine Speed Does Not Return To Idle ............... 221 . Mid Sun Gear, Rear Sun Gear, High and Low
Cannot Be Changed to Manual Mode ................. 222 . Reverse Clutch Hub ............................................. 314 .
A/T Does Not Shift: 5th gear 4th gear ............. 223 . High and Low Reverse Clutch ............................. 320 .
A/T Does Not Shift: 4th gear 3rd gear ............. 225 . Direct Clutch ........................................................ 323
.
A/T Does Not Shift: 3rd gear 2nd gear ............ 227 . ASSEMBLY ............................................................ 325 .
A/T Does Not Shift: 2nd gear 1st gear ............ 229 . Assembly (1) ........................................................ 325.
Vehicle Does Not Decelerate By Engine Brake ... 231 . Adjustment ........................................................... 338
.
SHIFT CONTROL SYSTEM ................................... 233 . Assembly (2) ........................................................ 341.
Control Device Removal and Installation ............. 233 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 348 .
Adjustment of A/T Position .................................. 234 . General Specifications ......................................... 348 .
Checking of A/T Position ..................................... 234 . Vehicle Speed When Shifting Gears .................... 348 .
A/T SHIFT LOCK SYSTEM .................................... 235 . Vehicle Speed When Performing and Releasing
Description ........................................................... 235
. Complete Lock-up ................................................ 349 .
Shift Lock System Electrical Parts Location ........ 235 . Vehicle Speed When Performing and Releasing
Wiring Diagram -- AT -- SHIFT .......................... 236 . Slip Lock-up ......................................................... 349
.
Diagnostic Procedure .......................................... 237 . Stall Speed ........................................................... 350
.
KEY INTERLOCK CABLE ..................................... 239 . Line Pressure ....................................................... 350.
Components ........................................................ 239
. A/T Fluid Temperature Sensor ............................. 350 .
Removal and Installation ..................................... 240 . Turbine Revolution Sensor ................................... 350 .
ON-VEHICLE SERVICE ......................................... 242 . Vehicle Speed Sensor A/T (Revolution Sensor) .. 350 .
Control Valve with TCM and A/T Fluid Temperature Reverse Brake ..................................................... 350 .
Sensor 2 .............................................................. 242
. Total End Play ...................................................... 351.
Parking Components (2WD Models Only) ........... 253 .
Revision: 2004 November AT-4 2004 FX35/FX45
INDEX FOR DTC
INDEX FOR DTC PFP:00024
A
Alphabetical Index ACS0079V
NOTE:
If DTC "U1000" is displayed with other DTC, first perform the trouble diagnosis for "DTC U1000 CAN B
COMMUNICATION LINE". Refer to AT-105 .
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-150
D
ATF PRES SW 1/CIRC -- P1841 AT-178
ATF PRES SW 3/CIRC -- P1843 AT-180
ATF PRES SW 5/CIRC -- P1845 AT-182 E
ATF PRES SW 6/CIRC -- P1846 AT-184
A/T INTERLOCK P1730 P1730 AT-147
F
A/T TCC S/V FNCTN P0744 P0744 AT-125
ATF TEMP SEN/CIRC P0710 P1710 AT-139
CAN COMM CIRCUIT U1000 U1000 AT-105 G
D/C SOLENOID/CIRC P1762 P1762 AT-160
D/C SOLENOID FNCTN P1764 (*3) P1764 AT-162
ENGINE SPEED SIG P0725 (*2) P0725 AT-121
H
FR/B SOLENOID/CIRC P1757 P1757 AT-156
FR/B SOLENOID FNCT P1759 P1759 AT-158
I
HLR/C SOL/CIRC P1767 P1767 AT-164
HLR/C SOL FNCTN P1769 (*3) P1769 AT-166
I/C SOLENOID/CIRC P1752 P1752 AT-152 J
I/C SOLENOID FNCTN P1754 (*3) P1754 AT-154
L/PRESS SOL/CIRC P0745 P0745 AT-127
K
LC/B SOLENOID/CIRC P1772 P1772 AT-168
LC/B SOLENOID FNCT P1774 P1774 AT-170
MANU MODE SW/CIR -- P1815 AT-172 L
PNP SW/CIRC P0705 P0705 AT-112
STARTER RELAY/CIRC -- P0615 AT-108
M
TCC SOLENOID/CIRC P0740 P0740 AT-123
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