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C TRANSMISSION/TRANSAXLE
A
AUTOMATIC TRANSMISSION
SECTION AT B
AT
D
E
CONTENTS
INDEX FOR DTC ....................................................... 5 . Accurate Repair ..................................................... 47
. F
Alphabetical Index ................................................... 5
. A/T Electrical Parts Location ................................. 52 .
DTC No. Index ........................................................ 6
. Schematic .............................................................. 53
.
PRECAUTIONS ......................................................... 7 . Inspections Before Trouble Diagnosis ................... 54 . G
Precautions for Supplemental Restraint System Check Before Engine is Started ............................. 58 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Check at Idle .......................................................... 58
.
SIONER" ................................................................. 7
. Cruise Test - Part 1 ................................................ 59
.
H
Precautions for On Board Diagnostic (OBD) System Cruise Test - Part 2 ................................................ 61
.
of A/T and Engine ................................................... 7. Cruise Test - Part 3 ................................................ 62
.
Precautions ............................................................. 8
. Vehicle Speed When Shifting Gears ..................... 64 .
Service Notice or Precautions ................................. 9 . Vehicle Speed When Performing and Releasing I
PREPARATION ........................................................ 10 . Complete Lock-up ................................................. 64 .
Special Service Tools ............................................ 10 . Vehicle Speed When Performing and Releasing
Commercial Service Tools ......................................11 . Slip Lock-up ........................................................... 64
. J
A/T FLUID ................................................................ 12
. Symptom Chart ...................................................... 65
.
Changing Automatic Transmission Fluid (ATF) ..... 12 . TCM Input/Output Signal Reference Values .......... 86 .
Checking Automatic Transmission Fluid (ATF) ..... 12 . CONSULT-II FUNCTION (A/T) .............................. 87 .
K
A/T Fluid Cooler Cleaning ..................................... 14 . DTC U1000 CAN COMMUNICATION LINE ............. 95 .
A/T CONTROL SYSTEM ......................................... 17 . Description ............................................................. 95
.
Cross-Sectional View (2WD models) .................... 17 . On Board Diagnosis Logic ..................................... 95 .
Cross-Sectional View (4WD models) .................... 18 . Possible Cause ...................................................... 95
. L
Shift Mechanism .................................................... 19. DTC Confirmation Procedure ................................ 95 .
TCM Function ........................................................ 32
. Wiring Diagram -- AT -- CAN ............................... 96 .
CAN Communication ............................................. 34 . Diagnostic Procedure ............................................ 97 . M
Input/Output Signal of TCM ................................... 34 . DTC P0615 START SIGNAL CIRCUIT .................... 98 .
Line Pressure Control ........................................... 35 . Description ............................................................. 98
.
Shift Control .......................................................... 36
. CONSULT-II Reference Value ............................... 98 .
Lock-Up Control .................................................... 37. On Board Diagnosis Logic ..................................... 98 .
Engine Brake Control ............................................ 39 . Possible Cause ...................................................... 98
.
Control Valve ......................................................... 39
. DTC Confirmation Procedure ................................ 98 .
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 41 . Wiring Diagram -- AT -- STSIG ........................... 99 .
Introduction ........................................................... 41
. Diagnostic Procedure .......................................... 100 .
OBD-II Function for A/T System ............................ 41 . DTC P0700 TCM .................................................... 102 .
One or Two Trip Detection Logic of OBD-II ........... 41 . Description ........................................................... 102
.
OBD-II Diagnostic Trouble Code (DTC) ................ 41 . On Board Diagnosis Logic ................................... 102 .
Malfunction Indicator Lamp (MIL) .......................... 44 . Possible Cause .................................................... 102
.
TROUBLE DIAGNOSIS ........................................... 45 . DTC Confirmation Procedure .............................. 102 .
DTC Inspection Priority Chart ............................... 45 . Diagnostic Procedure .......................................... 102 .
Fail-Safe ................................................................ 45
. DTC P0705 PARK/NEUTRAL POSITION SWITCH. 103
How To Perform Trouble Diagnosis For Quick and Description ........................................................... 103
.
Revision: August 2006 AT-1 2007 Titan
CONSULT-II Reference Value ............................. 103 . CIRCUIT ................................................................. 125
.
On Board Diagnosis Logic ................................... 103 . Description ........................................................... 125
.
Possible Cause .................................................... 103
. CONSULT-II Reference Value .............................. 125 .
DTC Confirmation Procedure .............................. 103 . On Board Diagnosis Logic ................................... 125 .
Wiring Diagram -- AT -- PNP/SW ...................... 104 . Possible Cause .................................................... 125.
Diagnostic Procedure .......................................... 105 . DTC Confirmation Procedure ............................... 125 .
DTC P0717 TURBINE REVOLUTION SENSOR ... 107 . Wiring Diagram -- AT -- FTS .............................. 126 .
Description ........................................................... 107
. Diagnostic Procedure ........................................... 127 .
CONSULT-II Reference Value ............................. 107 . Component Inspection ......................................... 129 .
On Board Diagnosis Logic ................................... 107 . DTC P1721 VEHICLE SPEED SENSOR MTR ...... 130 .
Possible Cause .................................................... 107
. Description ........................................................... 130
.
DTC Confirmation Procedure .............................. 107 . CONSULT-II Reference Value .............................. 130 .
Diagnostic Procedure .......................................... 108 . On Board Diagnosis Logic ................................... 130 .
DTC P0720 VEHICLE SPEED SENSOR A/T (REV- Possible Cause .................................................... 130.
OLUTION SENSOR) .............................................. 109 . DTC Confirmation Procedure ............................... 130 .
Description ........................................................... 109
. Diagnostic Procedure ........................................... 131 .
CONSULT-II Reference Value ............................. 109 . DTC P1730 A/T INTERLOCK ................................ 132 .
On Board Diagnosis Logic ................................... 109 . Description ........................................................... 132
.
Possible Cause .................................................... 109
. On Board Diagnosis Logic ................................... 132 .
DTC Confirmation Procedure .............................. 109 . Possible Cause .................................................... 132.
Wiring Diagram -- AT -- VSSA/T .........................111 . DTC Confirmation Procedure ............................... 132 .
Diagnostic Procedure .......................................... 112 . Judgement of A/T Interlock .................................. 132 .
DTC P0725 ENGINE SPEED SIGNAL .................. 114 . Diagnostic Procedure ........................................... 133 .
Description ........................................................... 114
. DTC P1731 A/T 1ST ENGINE BRAKING .............. 135 .
CONSULT-II Reference Value ............................. 114 . Description ........................................................... 135
.
On Board Diagnosis Logic ................................... 114 . CONSULT-II Reference Value .............................. 135 .
Possible Cause .................................................... 114
. On Board Diagnosis Logic ................................... 135 .
DTC Confirmation Procedure .............................. 114 . Possible Cause .................................................... 135.
Diagnostic Procedure .......................................... 114 . DTC Confirmation Procedure ............................... 135 .
DTC P0740 TORQUE CONVERTER CLUTCH Diagnostic Procedure ........................................... 136 .
SOLENOID VALVE ................................................ 116 . DTC P1752 INPUT CLUTCH SOLENOID VALVE . 137
Description ........................................................... 116
. Description ........................................................... 137
.
CONSULT-II Reference Value ............................. 116 . CONSULT-II Reference Value .............................. 137 .
On Board Diagnosis Logic ................................... 116 . On Board Diagnosis Logic ................................... 137 .
Possible Cause .................................................... 116
. Possible Cause .................................................... 137.
DTC Confirmation Procedure .............................. 116 . DTC Confirmation Procedure ............................... 137 .
Diagnostic Procedure .......................................... 117 . Diagnostic Procedure ........................................... 138 .
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP). 118 DTC P1754 INPUT CLUTCH SOLENOID VALVE
Description ........................................................... 118
. FUNCTION ............................................................. 139
.
CONSULT-II Reference Value ............................. 118 . Description ........................................................... 139
.
On Board Diagnosis Logic ................................... 118 . CONSULT-II Reference Value .............................. 139 .
Possible Cause .................................................... 118
. On Board Diagnosis Logic ................................... 139 .
DTC Confirmation Procedure .............................. 118 . Possible Cause .................................................... 139.
Diagnostic Procedure .......................................... 119 . DTC Confirmation Procedure ............................... 139 .
DTC P0745 LINE PRESSURE SOLENOID VALVE. 120 Diagnostic Procedure ........................................... 140 .
Description ........................................................... 120
. DTC P1757 FRONT BRAKE SOLENOID VALVE .. 141 .
CONSULT-II Reference Value ............................. 120 . Description ........................................................... 141
.
On Board Diagnosis Logic ................................... 120 . CONSULT-II Reference Value .............................. 141 .
Possible Cause .................................................... 120
. On Board Diagnosis Logic ................................... 141 .
DTC Confirmation Procedure .............................. 120 . Possible Cause .................................................... 141.
Diagnostic Procedure .......................................... 121 . DTC Confirmation Procedure ............................... 141 .
DTC P1705 THROTTLE POSITION SENSOR ...... 122 . Diagnostic Procedure ........................................... 142 .
Description ........................................................... 122
. DTC P1759 FRONT BRAKE SOLENOID VALVE
CONSULT-II Reference Value ............................. 122 . FUNCTION ............................................................. 143
.
On Board Diagnosis Logic ................................... 122 . Description ........................................................... 143
.
Possible Cause .................................................... 122
. CONSULT-II Reference Value .............................. 143 .
DTC Confirmation Procedure .............................. 122 . On Board Diagnosis Logic ................................... 143 .
Diagnostic Procedure .......................................... 123 . Possible Cause .................................................... 143.
DTC P1710 A/T FLUID TEMPERATURE SENSOR
Revision: August 2006 AT-2 2007 Titan
DTC Confirmation Procedure .............................. 143 . Component Inspection ......................................... 160 .
Diagnostic Procedure .......................................... 144 . Position Indicator Lamp ....................................... 160 . A
DTC P1762 DIRECT CLUTCH SOLENOID VALVE 145 . DTC P1841 ATF PRESSURE SWITCH 1 .............. 161 .
Description .......................................................... 145
. Description ........................................................... 161
.
CONSULT-II Reference Value ............................. 145 . CONSULT-II Reference Value ............................. 161 . B
On Board Diagnosis Logic .................................. 145 . On Board Diagnosis Logic ................................... 161 .
Possible Cause ................................................... 145 . Possible Cause .................................................... 161
.
DTC Confirmation Procedure .............................. 145 . DTC Confirmation Procedure .............................. 161 .
Diagnostic Procedure .......................................... 146 . Diagnostic Procedure .......................................... 162 . AT
DTC P1764 DIRECT CLUTCH SOLENOID VALVE DTC P1843 ATF PRESSURE SWITCH 3 .............. 163 .
FUNCTION ............................................................. 147
. Description ........................................................... 163
.
Description .......................................................... 147
. CONSULT-II Reference Value ............................. 163 . D
CONSULT-II Reference Value ............................. 147 . On Board Diagnosis Logic ................................... 163 .
On Board Diagnosis Logic .................................. 147 . Possible Cause .................................................... 163
.
Possible Cause ................................................... 147 . DTC Confirmation Procedure .............................. 163 . E
DTC Confirmation Procedure .............................. 147 . Diagnostic Procedure .......................................... 164 .
Diagnostic Procedure .......................................... 148 . DTC P1845 ATF PRESSURE SWITCH 5 .............. 165 .
DTC P1767 HIGH AND LOW REVERSE CLUTCH Description ........................................................... 165
.
SOLENOID VALVE ................................................ 149 . CONSULT-II Reference Value ............................. 165 . F
Description .......................................................... 149
. On Board Diagnosis Logic ................................... 165 .
CONSULT-II Reference Value ............................. 149 . Possible Cause .................................................... 165
.
On Board Diagnosis Logic .................................. 149 . DTC Confirmation Procedure .............................. 165 . G
Possible Cause ................................................... 149 . Diagnostic Procedure .......................................... 166 .
DTC Confirmation Procedure .............................. 149 . DTC P1846 ATF PRESSURE SWITCH 6 .............. 167 .
Diagnostic Procedure .......................................... 150 . Description ........................................................... 167
. H
DTC P1769 HIGH AND LOW REVERSE CLUTCH CONSULT-II Reference Value ............................. 167 .
SOLENOID VALVE FUNCTION ............................ 151 . On Board Diagnosis Logic ................................... 167 .
Description .......................................................... 151
. Possible Cause .................................................... 167
.
I
CONSULT-II Reference Value ............................. 151 . DTC Confirmation Procedure .............................. 167 .
On Board Diagnosis Logic .................................. 151 . Diagnostic Procedure .......................................... 168 .
Possible Cause ................................................... 151 . MAIN POWER SUPPLY AND GROUND CIRCUIT. 169
DTC Confirmation Procedure .............................. 151 . Wiring Diagram -- AT -- MAIN ........................... 169 . J
Diagnostic Procedure .......................................... 152 . Diagnostic Procedure .......................................... 170 .
DTC P1772 LOW COAST BRAKE SOLENOID TOW MODE SWITCH ............................................ 173 .
VALVE .................................................................... 153
. Description ........................................................... 173
. K
Description .......................................................... 153
. Wiring Diagram -- AT -- TMSW ......................... 174 .
CONSULT-II Reference Value ............................. 153 . Diagnostic Procedure .......................................... 175 .
On Board Diagnosis Logic .................................. 153 . CLOSED THROTTLE POSITION AND WIDE OPEN
L
Possible Cause ................................................... 153 . THROTTLE POSITION CIRCUIT ........................... 176 .
DTC Confirmation Procedure .............................. 153 . CONSULT-II Reference Value ............................. 176 .
Diagnostic Procedure .......................................... 154 . Diagnostic Procedure .......................................... 176 .
DTC P1774 LOW COAST BRAKE SOLENOID BRAKE SIGNAL CIRCUIT ..................................... 177 . M
VALVE FUNCTION ................................................ 155 . CONSULT-II Reference Value ............................. 177 .
Description .......................................................... 155
. Diagnostic Procedure .......................................... 177 .
CONSULT-II Reference Value ............................. 155 . TROUBLE DIAGNOSIS FOR SYMPTOMS ........... 178 .
On Board Diagnosis Logic .................................. 155 . Wiring Diagram -- AT -- NONDTC ..................... 178 .
Possible Cause ................................................... 155 . AT CHECK Indicator Lamp does not come on .... 181 .
DTC Confirmation Procedure .............................. 155 . Engine Cannot Be Started In "P" or "N" Position . 181
Diagnostic Procedure .......................................... 156 . In "P" Position, Vehicle Moves When Pushed ..... 182 .
DTC P1815 MANUAL MODE SWITCH ................. 157 . In "N" Position, Vehicle Moves ............................. 183 .
Description .......................................................... 157
. Large Shock ("N" to "D" Position) ........................ 184 .
CONSULT-II Reference Value in Data Monitor Mode Vehicle Does Not Creep Backward In "R" Position 187 .
. 157 Vehicle Does Not Creep Forward In "D" Position . 190
On Board Diagnosis Logic .................................. 157 . Vehicle Cannot Be Started From D1 .................... 192 .
Possible Cause ................................................... 157 . A/T Does Not Shift: D1 D 2 ............................... 195 .
DTC Confirmation Procedure .............................. 157 . A/T Does Not Shift: D2 D 3 ............................... 197 .
Wiring Diagram -- AT -- MMSW ........................ 158 . A/T Does Not Shift: D3 D 4 ............................... 199 .
Diagnostic Procedure .......................................... 159 . A/T Does Not Shift: D4 D 5 ............................... 202 .
A/T Does Not Perform Lock-up ........................... 204 .
Revision: August 2006 AT-3 2007 Titan
A/T Does Not Hold Lock-up Condition ................. 206 . Control Valve With TCM and A/T Fluid Temperature
Lock-up Is Not Released ..................................... 208 . Sensor 2 ............................................................... 247
.
Engine Speed Does Not Return To Idle ............... 209 . Rear Oil Seal ........................................................ 257
.
Cannot Be Changed to Manual Mode (Column Shift) AIR BREATHER HOSE .......................................... 258 .
. 210 Removal and Installation ...................................... 258 .
A/T Does Not Shift: 5th gear 4th gear (Floor Shift TRANSMISSION ASSEMBLY ................................ 260 .
Models) ................................................................ 210
. Removal and Installation (2WD) .......................... 260 .
A/T Does Not Shift: 5th gear 4th gear (Column Removal and Installation (4WD) .......................... 263 .
Shift Models) ........................................................ 213
. OVERHAUL ............................................................ 267
.
A/T Does Not Shift: 4th gear 3rd gear (Floor Shift Components ......................................................... 267
.
Models) ................................................................ 215
. Oil Channel .......................................................... 275
.
A/T Does Not Shift: 4th gear 3rd gear (Column Locations of Adjusting Shims, Needle Bearings,
Shift Models) ........................................................ 217
. Thrust Washers and Snap Rings ......................... 277 .
A/T Does Not Shift: 3rd gear 2nd gear (Floor Shift DISASSEMBLY ...................................................... 281 .
Models) ................................................................ 219
. Disassembly ......................................................... 281
.
A/T Does Not Shift: 3rd gear 2nd gear (Column REPAIR FOR COMPONENT PARTS ..................... 299 .
Shift Models) ........................................................ 221
. Oil Pump .............................................................. 299
.
A/T Does Not Shift: 2nd gear 1st gear (Floor Shift Front Sun Gear, 3rd One-Way Clutch .................. 301 .
Models) ................................................................ 223
. Front Carrier, Input Clutch, Rear Internal Gear .... 303 .
A/T Does Not Shift: 2nd gear 1st gear (Column Mid Sun Gear, Rear Sun Gear, High and Low
Shift Models) ........................................................ 226
. Reverse Clutch Hub ............................................. 308 .
Vehicle Does Not Decelerate By Engine Brake ... 228 . High and Low Reverse Clutch ............................. 313 .
SHIFT CONTROL SYSTEM ................................... 231 . Direct Clutch ........................................................ 315
.
Control Device Removal and Installation ............. 231 . ASSEMBLY ............................................................ 317
.
Adjustment of A/T Position .................................. 233 . Assembly (1) ........................................................ 317
.
Checking of A/T Position ..................................... 233 . Adjustment ........................................................... 330
.
A/T SHIFT LOCK SYSTEM .................................... 234 . Assembly (2) ........................................................ 332
.
Description ........................................................... 234
. SERVICE DATA AND SPECIFICATIONS (SDS) ... 339 .
Shift Lock System Electrical Parts Location ........ 235 . General Specifications ......................................... 339 .
Wiring Diagram -- AT -- SHIFT .......................... 236 . Vehicle Speed When Shifting Gears .................... 339 .
Shift Lock Control Unit Reference Values ............ 238 . Vehicle Speed When Performing and Releasing
DIAGNOSTIC PROCEDURE .............................. 239 . Complete Lock-up ................................................ 340 .
Component Inspection ......................................... 241 . Stall Speed ........................................................... 340
.
KEY INTERLOCK CABLE ..................................... 243 . Line Pressure ....................................................... 340
.
Components ........................................................ 243 . A/T Fluid Temperature Sensor ............................. 340 .
Removal .............................................................. 243
. Turbine Revolution Sensor ................................... 340 .
Installation ............................................................ 244
. Vehicle Speed Sensor A/T (Revolution Sensor) .. 340 .
ON-VEHICLE SERVICE ......................................... 245 . Reverse brake ...................................................... 341
.
Oil Pan ................................................................. 245
. Total End Play ...................................................... 341
.
Revision: August 2006 AT-4 2007 Titan
INDEX FOR DTC
INDEX FOR DTC PFP:00024
A
Alphabetical Index ECS00AVO
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to B
AT-95 .
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-135
D
ATF PRES SW 1/CIRC -- P1841 AT-161
ATF PRES SW 3/CIRC -- P1843 AT-163
ATF PRES SW 5/CIRC -- P1845 AT-165 E
ATF PRES SW 6/CIRC -- P1846 AT-167
A/T INTERLOCK P1730 P1730 AT-132
F
A/T TCC S/V FNCTN P0744 P0744 AT-118
ATF TEMP SEN/CIRC P0710 P1710 AT-125
CAN COMM CIRCUIT U1000 U1000 AT-95 G
D/C SOLENOID/CIRC P1762 P1762 AT-145
D/C SOLENOID FNCTN P1764 (*2 ) P1764 AT-147
ENGINE SPEED SIG -- P0725 AT-114
H
FR/B SOLENOID/CIRC P1757 P1757 AT-141
FR/B SOLENOID FNCT P1759 P1759 AT-143
I
HLR/C SOL/CIRC P1767 P1767 AT-149
HLR/C SOL FNCTN P1769 (*2 ) P1769 AT-151
I/C SOLENOID/CIRC P1752 P1752 AT-137 J
I/C SOLENOID FNCTN P1754 (*2 ) P1754 AT-139
L/PRESS SOL/CIRC P0745 P0745 AT-120
K
LC/B SOLENOID/CIRC P1772 P1772 AT-153
LC/B SOLENOID FNCT P1774 P1774 AT-155
MANU MODE SW/CIR -- P1815 AT-157 L
PNP SW/CIRC P0705 P0705 AT-103
STARTER RELAY/CIRC -- P0615 AT-98
M
TCC SOLENOID/CIRC P0740 P0740 AT-116
TCM P0700 P0700 AT-102
TP SEN/CIRC A/T -- P1705 AT-122
TURBINE REV S/CIRC P0717 P0717 AT-107
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