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TRANSMISSION/TRANSAXLE
A
AUTOMATIC TRANSMISSION
SECTION AT B
AT
D
E
CONTENTS
SERVICE INFORMATION ........................... 5
. OBD-II Diagnostic Trouble Code (DTC) .................38. F
Malfunction Indicator Lamp (MIL) ...........................40
.
INDEX FOR DTC ................................................ 5
.
Alphabetical Index .................................................... 5
. TROUBLE DIAGNOSIS .................................... 41
G
DTC No. Index ......................................................... 5
. DTC Inspection Priority Chart .................................41 .
Fail-Safe .................................................................41
.
PRECAUTIONS .................................................. 7
. How to Perform Trouble Diagnosis for Quick and
Precaution for Supplemental Restraint System Accurate Repair ......................................................42 . H
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- A/T Electrical Parts Location ..................................48 .
SIONER" .................................................................. 7
. Circuit Diagram .......................................................49 .
Precaution for On Board Diagnosis (OBD) System Inspections Before Trouble Diagnosis ....................49 . I
of A/T and Engine .................................................... 7
. Road Test ...............................................................53.
Precaution ................................................................ 7
. Vehicle Speed at Which Gear Shifting Occurs .......58 .
Service Notice or Precaution .................................... 8 . Vehicle Speed at Which Lock-up Occurs/Releas- J
es ............................................................................58
.
PREPARATION .................................................. 9
. Symptom Chart .......................................................59 .
Special Service Tool ................................................ 9
. TCM Input/Output Signal Reference Value ............83 .
Commercial Service Tool ......................................... 9
. CONSULT-III Function (TRANSMISSION) .............84 . K
A/T FLUID ..........................................................11
. Diagnosis Procedure without CONSULT-III ...........91 .
Changing A/T Fluid ................................................ 11
. DTC U1000 CAN COMMUNICATION LINE ..... 94 L
Checking A/T Fluid ................................................. 11
. Description ..............................................................94
.
A/T Fluid Cooler Cleaning ...................................... 13
. On Board Diagnosis Logic ......................................94 .
A/T CONTROL SYSTEM ...................................16
. Possible Cause .......................................................94
.
M
DTC Confirmation Procedure .................................94 .
Cross-Sectional View (2WD Models) ..................... 16 .
Wiring Diagram - AT - CAN ....................................95 .
Cross-Sectional View (VQ35DE Models for AWD) 17 ....
Diagnosis Procedure ..............................................96 .
Cross-Sectional View (VK45DE Models for AWD) 18 ....
N
Shift Mechanism ..................................................... 18
. DTC P0615 START SIGNAL CIRCUIT ............. 97
TCM Function ......................................................... 29
. Description ..............................................................97
.
CAN Communication .............................................. 30 . CONSULT-III Reference Value in Data Monitor
Input/Output Signal of TCM .................................... 31 . O
Mode .......................................................................97
.
Line Pressure Control ............................................ 31. On Board Diagnosis Logic ......................................97 .
Shift Control ........................................................... 33
. Possible Cause .......................................................97.
Lock-up Control ...................................................... 34
. DTC Confirmation Procedure .................................97 . P
Engine Brake Control ............................................. 35. Wiring Diagram - AT - STSIG .................................98 .
Control Valve .......................................................... 36
. Diagnosis Procedure ..............................................99 .
ON BOARD DIAGNOSTIC (OBD) SYSTEM .....38
. DTC P0700 TCM ............................................. 101
Introduction ............................................................ 38
. Description ............................................................ 101
.
OBD-II Function for A/T System ............................. 38 . On Board Diagnosis Logic .................................... 101 .
One or Two Trip Detection Logic of OBD-II ........... 38 .
Revision: 2007 April AT-1 2008 FX35/FX45
Possible Cause .....................................................101
. DTC P0733 A/T 3RD GEAR FUNCTION ........ 118
.
DTC Confirmation Procedure ...............................101 . Description ........................................................... 118
.
Diagnosis Procedure ............................................101
. On Board Diagnosis Logic ................................... 118 .
Possible Cause .................................................... 118
.
DTC P0705 PARK/NEUTRAL POSITION DTC Confirmation Procedure ............................... 118 .
SWITCH .......................................................... 102
. Diagnosis Procedure ............................................ 119 .
Description ............................................................102
.
CONSULT-III Reference Value in Data Monitor DTC P0734 A/T 4TH GEAR FUNCTION ......... 120
.
Mode .....................................................................102
. Description ........................................................... 120
.
On Board Diagnosis Logic ....................................102 . On Board Diagnosis Logic ................................... 120 .
Possible Cause .....................................................102 . Possible Cause .................................................... 120
.
DTC Confirmation Procedure ...............................102 . DTC Confirmation Procedure ............................... 120 .
Wiring Diagram - AT - PNP/SW ............................103 . Diagnosis Procedure ............................................ 121 .
Diagnosis Procedure ............................................103 .
DTC P0735 A/T 5TH GEAR FUNCTION ......... 122
.
DTC P0717 TURBINE REVOLUTION SEN- Description ........................................................... 122
.
SOR ................................................................. 106
. On Board Diagnosis Logic ................................... 122 .
Description ............................................................106
. Possible Cause .................................................... 122
.
CONSULT-III Reference Value in Data Monitor DTC Confirmation Procedure ............................... 122 .
Mode .....................................................................106
. Diagnosis Procedure ............................................ 123 .
On Board Diagnosis Logic ....................................106 .
Possible Cause .....................................................106 . DTC P0740 TORQUE CONVERTER CLUTCH
DTC Confirmation Procedure ...............................106 . SOLENOID VALVE ......................................... 124
.
Diagnosis Procedure ............................................106 . Description ........................................................... 124
.
CONSULT-III Reference Value in Data Monitor
DTC P0720 VEHICLE SPEED SENSOR A/T Mode .................................................................... 124
.
(REVOLUTION SENSOR) .............................. 108
. On Board Diagnosis Logic ................................... 124 .
Description ............................................................108
. Possible Cause .................................................... 124 .
CONSULT-III Reference Value in Data Monitor DTC Confirmation Procedure ............................... 124 .
Mode .....................................................................108
. Diagnosis Procedure ............................................ 124 .
On Board Diagnosis Logic ....................................108 .
Possible Cause .....................................................108 . DTC P0744 A/T TCC S/V FUNCTION (LOCK-
DTC Confirmation Procedure ...............................108 . UP) ................................................................... 126
.
Wiring Diagram - AT - VSSA/T .............................109 . Description ........................................................... 126
.
Diagnosis Procedure ............................................110 . CONSULT-III Reference Value in Data Monitor
Mode .................................................................... 126
.
DTC P0725 ENGINE SPEED SIGNAL ........... 112
. On Board Diagnosis Logic ................................... 126 .
Description ............................................................112
. Possible Cause .................................................... 126 .
CONSULT-III Reference Value in Data Monitor DTC Confirmation Procedure ............................... 126 .
Mode .....................................................................112
. Diagnosis Procedure ............................................ 126 .
On Board Diagnosis Logic ....................................112 .
Possible Cause .....................................................112 . DTC P0745 LINE PRESSURE SOLENOID
DTC Confirmation Procedure ...............................112 . VALVE ............................................................. 128
.
Diagnosis Procedure ............................................112 . Description ........................................................... 128
.
CONSULT-III Reference Value in Data Monitor
DTC P0731 A/T 1ST GEAR FUNCTION ........ 114
. Mode .................................................................... 128
.
Description ............................................................114
. On Board Diagnosis Logic ................................... 128 .
On Board Diagnosis Logic ....................................114 . Possible Cause .................................................... 128 .
Possible Cause .....................................................114
. DTC Confirmation Procedure ............................... 128 .
DTC Confirmation Procedure ...............................114 . Diagnosis Procedure ............................................ 128 .
Diagnosis Procedure ............................................115 .
DTC P1705 THROTTLE POSITION SENSOR.. 130
DTC P0732 A/T 2ND GEAR FUNCTION ........ 116
. Description ........................................................... 130
.
Description ............................................................116
. CONSULT-III Reference Value in Data Monitor
On Board Diagnosis Logic ....................................116 . Mode .................................................................... 130
.
Possible Cause .....................................................116
. On Board Diagnosis Logic ................................... 130 .
DTC Confirmation Procedure ...............................116 . Possible Cause .................................................... 130 .
Diagnosis Procedure ............................................117 . DTC Confirmation Procedure ............................... 130 .
Diagnosis Procedure ............................................ 130 .
Revision: 2007 April AT-2 2008 FX35/FX45
DTC P1710 A/T FLUID TEMPERATURE SEN- Description ............................................................ 147
.
SOR CIRCUIT .................................................. 132
. CONSULT-III Reference Value in Data Monitor A
Description ........................................................... 132
. Mode ..................................................................... 147
.
CONSULT-III Reference Value in Data Monitor On Board Diagnosis Logic .................................... 147 .
Mode .................................................................... 132
. Possible Cause ..................................................... 147. B
On Board Diagnosis Logic ................................... 132 . DTC Confirmation Procedure ............................... 147 .
Possible Cause .................................................... 132. Diagnosis Procedure ............................................ 147 .
DTC Confirmation Procedure ............................... 132 .
Wiring Diagram - AT - FTS ................................... 133 .
DTC P1767 HIGH AND LOW REVERSE AT
Diagnosis Procedure ............................................ 133 . CLUTCH SOLENOID VALVE ......................... 149
Component Inspection ......................................... 135 . Description ............................................................ 149
.
CONSULT-III Reference Value in Data Monitor D
DTC P1721 VEHICLE SPEED SENSOR MTR 137
.. Mode ..................................................................... 149
.
Description ........................................................... 137
. On Board Diagnosis Logic .................................... 149 .
CONSULT-III Reference Value in Data Monitor Possible Cause ..................................................... 149.
E
Mode .................................................................... 137
. DTC Confirmation Procedure ............................... 149 .
On Board Diagnosis Logic ................................... 137 . Diagnosis Procedure ............................................ 149 .
Possible Cause .................................................... 137.
DTC Confirmation Procedure ............................... 137 . DTC P1772 LOW COAST BRAKE SOLENOID F
Diagnosis Procedure ............................................ 137 . VALVE ............................................................. 151
Description ............................................................ 151
.
DTC P1730 A/T INTERLOCK ......................... 139
. CONSULT-III Reference Value in Data Monitor G
Description ........................................................... 139
. Mode ..................................................................... 151
.
On Board Diagnosis Logic ................................... 139 . On Board Diagnosis Logic .................................... 151 .
Possible Cause .................................................... 139
. Possible Cause ..................................................... 151.
H
DTC Confirmation Procedure ............................... 139 . DTC Confirmation Procedure ............................... 151 .
Judgement of A/T Interlock .................................. 139 . Diagnosis Procedure ............................................ 151 .
Diagnosis Procedure ............................................ 139 .
DTC P1774 LOW COAST BRAKE SOLENOID I
DTC P1731 A/T 1ST ENGINE BRAKING ....... 141
. VALVE FUNCTION ......................................... 153
Description ........................................................... 141
. Description ............................................................ 153
.
CONSULT-III Reference Value in Data Monitor CONSULT-III Reference Value in Data Monitor J
Mode .................................................................... 141
. Mode ..................................................................... 153
.
On Board Diagnosis Logic ................................... 141 . On Board Diagnosis Logic .................................... 153 .
Possible Cause .................................................... 141. Possible Cause ..................................................... 153.
DTC Confirmation Procedure ............................... 141 . DTC Confirmation Procedure ............................... 153 . K
Diagnosis Procedure ............................................ 141 . Diagnosis Procedure ............................................ 153 .
DTC P1752 INPUT CLUTCH SOLENOID DTC P1815 MANUAL MODE SWITCH .......... 155 L
VALVE ............................................................. 143
. Description ............................................................ 155
.
Description ........................................................... 143
. CONSULT-III Reference Value in Data Monitor
CONSULT-III Reference Value in Data Monitor Mode ..................................................................... 155
.
M
Mode .................................................................... 143
. On Board Diagnosis Logic .................................... 155 .
On Board Diagnosis Logic ................................... 143 . Possible Cause ..................................................... 155.
Possible Cause .................................................... 143. DTC Confirmation Procedure ............................... 155 .
DTC Confirmation Procedure ............................... 143 . Wiring Diagram - AT - MMSW .............................. 156 . N
Diagnosis Procedure ............................................ 143 . Diagnosis Procedure ............................................ 158 .
Component Inspection .......................................... 159 .
DTC P1757 FRONT BRAKE SOLENOID O
VALVE ............................................................. 145
. MAIN POWER SUPPLY AND GROUND CIR-
Description ........................................................... 145
. CUIT ................................................................ 160
CONSULT-III Reference Value in Data Monitor Wiring Diagram - AT - MAIN ................................. 160
.
Mode .................................................................... 145
. Diagnosis Procedure ............................................ 161
. P
On Board Diagnosis Logic ................................... 145 .
Possible Cause .................................................... 145. CLOSED THROTTLE POSITION AND WIDE
DTC Confirmation Procedure ............................... 145 . OPEN THROTTLE POSITION CIRCUIT ......... 164
Diagnosis Procedure ............................................ 145 . CONSULT-III Reference Value in Data Monitor
Mode ..................................................................... 164
.
DTC P1762 DIRECT CLUTCH SOLENOID Diagnosis Procedure ............................................ 164 .
VALVE ............................................................. 147
.
Revision: 2007 April AT-3 2008 FX35/FX45
BRAKE SIGNAL CIRCUIT ............................. 165
. ON-VEHICLE SERVICE .................................. 215
.
CONSULT-III Reference Value in Data Monitor Control Valve with TCM and A/T Fluid Tempera-
Mode .....................................................................165
. ture Sensor 2 ....................................................... 215.
Diagnosis Procedure ............................................165 . Parking Component (2WD Models Only) ............. 226 .
Rear Oil Seal ........................................................ 233
.
A/T INDICATOR CIRCUIT .............................. 166
. Revolution Sensor Component (2WD Models
Description ............................................................166
. Only) .................................................................... 233
.
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................166
. AIR BREATHER HOSE ................................... 239
.
Diagnosis Procedure ............................................166 . Removal and Installation ...................................... 239
.
TROUBLE DIAGNOSIS FOR SYMPTOMS .... 167
. TRANSMISSION ASSEMBLY ......................... 241
.
Wiring Diagram - AT - NONDTC ...........................167 . Removal and Installation (2WD Models) .............. 241
.
A/T Check Indicator Lamp Does Not Come On ....170 . Removal and Installation (AWD Models) ............. 243
.
Engine Cannot Be Started in "P" or "N" Position ..170
In "P" Position, Vehicle Moves When Pushed ......171 . OVERHAUL ..................................................... 249
.
In "N" Position, Vehicle Moves .............................172
. Component .......................................................... 249
.
Large Shock ("N" to "D" Position) .........................173
. Oil Channel .......................................................... 261
.
Vehicle Does Not Creep Backward in "R" Position 175 .. Location of Adjusting Shims, Needle Bearings,
Vehicle Does Not Creep Forward in "D" Position ..178 Thrust Washers and Snap Rings ......................... 264 .
Vehicle Cannot Be Started from D1 ......................180 .
DISASSEMBLY ............................................... 267
.
A/T Does Not Shift: D1 D2 .................................182
.
Disassembly ......................................................... 267
.
A/T Does Not Shift: D2 D3 .................................184
.
A/T Does Not Shift: D3 D4 .................................186
. REPAIR FOR COMPONENT PARTS ............. 285
.
A/T Does Not Shift: D4 D5 .................................188
. Oil Pump .............................................................. 285
.
A/T Does Not Lock-up ..........................................190
. Front Sun Gear, 3rd One-Way Clutch .................. 287 .
A/T Does Not Hold Lock-up Condition ..................192 . Front Carrier, Input Clutch, Rear Internal Gear .... 289 .
Lock-up Is Not Released ......................................194
. Mid Sun Gear, Rear Sun Gear, High and Low Re-
Engine Speed Does Not Return to Idle ................194 . verse Clutch Hub ................................................. 295.
Cannot Be Changed to Manual Mode ..................195 . High and Low Reverse Clutch ............................. 301 .
A/T Does Not Shift: 5th Gear 4th Gear ............196 . Direct Clutch ........................................................ 303
.
A/T Does Not Shift: 4th Gear 3rd Gear ............197 .
A/T Does Not Shift: 3rd Gear 2nd Gear ...........199 . ASSEMBLY ..................................................... 306
.
A/T Does Not Shift: 2nd Gear 1st Gear ............201 . Assembly (1) ........................................................ 306
.
Vehicle Does Not Decelerate by Engine Brake ....202 . Adjustment ........................................................... 320
.
Assembly (2) ........................................................ 323
.
SHIFT CONTROL SYSTEM ........................... 205
.
Control Device Removal and Installation ..............205 . SERVICE DATA AND SPECIFICATIONS
Control Rod Removal and Installation ..................206 . (SDS) ............................................................... 330
.
Adjustment of A/T Position ...................................207
. General Specification ........................................... 330 .
Checking of A/T Position ......................................207
. Vehicle Speed at Which Gear Shifting Occurs .... 330 .
Vehicle Speed at Which Lock-up Occurs/Releas-
A/T SHIFT LOCK SYSTEM ............................ 208
. es ......................................................................... 331
.
Description ............................................................208
. Stall Speed ........................................................... 331.
Shift Lock System Electrical Parts Location .........208 . Line Pressure ....................................................... 331 .
Wiring Diagram - AT - SHIFT ................................209 . A/T Fluid Temperature Sensor ............................. 332 .
Diagnosis Procedure ............................................209 . Turbine Revolution Sensor .................................. 332 .
KEY INTERLOCK CABLE .............................. 212
. Vehicle Speed Sensor A/T (Revolution Sensor) .. 332 .
Reverse Brake ..................................................... 332 .
Component ...........................................................212
.
Total End Play ...................................................... 332 .
Removal and Installation ......................................212 .
Revision: 2007 April AT-4 2008 FX35/FX45
INDEX FOR DTC
< SERVICE INFORMATION >
SERVICE INFORMATION A
INDEX FOR DTC
Alphabetical Index INFOID:0000000001327120
B
NOTE:
If "DTC U1000" is displayed with other DTCs, first perform the trouble diagnosis for "DTC U1000 CAN
COMMUNICATION". Refer to AT-94. AT
DTC
Items OBD-II Except OBD-II D
Reference page
(CONSULT-III screen terms) CONSULT-III CONSULT-III only "TRANS-
GST(*1) MISSION"
E
A/T 1ST E/BRAKING -- P1731 AT-141
ATF 1ST GR FNCTN P0731 P0731 AT-114
ATF 2ND GR FNCTN P0732 P0732 AT-116 F
ATF 3RD GR FNCTN P0733 P0733 AT-118
ATF 4TH GR FNCTN P0734 P0734 AT-120
ATF 5TH GR FNCTN P0735 P0735 AT-122 G
A/T INTERLOCK P1730 P1730 AT-139
A/T TCC S/V FNCTN P0744(*2) P0744 AT-126 H
ATF TEMP SEN/CIRC P0710 P1710 AT-132
CAN COMM CIRCUIT U1000 U1000 AT-94
D/C SOLENOID/CIRC P1762 P1762 AT-147
I
ENGINE SPEED SIG P0725 P0725 AT-112
FR/B SOLENOID/CIRC P1757 P1757 AT-145 J
HLR/C SOL/CIRC P1767 P1767 AT-149
I/C SOLENOID/CIRC P1752 P1752 AT-143
L/PRESS SOL/CIRC P0745 P0745 AT-128 K
LC/B SOLENOID/CIRC P1772 P1772 AT-151
LC/B SOLENOID FNCT P1774(*2) P1774 AT-153
L
MANU MODE SW/CIRC -- P1815 AT-155
PNP SW/CIRC P0705 P0705 AT-102
STARTER RELAY/CIRC -- P0615 AT-97 M
TCC SOLENOID/CIRC P0740 P0740 AT-124
TCM P0700 P0700 AT-101
N
TP SEN/CIRC A/T P1705 P1705 AT-130
TURBINE REV S/CIRC P0717 P0717 AT-106
VEH SPD SE/CIR-MTR -- P1721 AT-137 O
VEH SPD SEN/CIR AT P0720 P0720 AT-108
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.
P
DTC No. Index INFOID:0000000001327121
NOTE:
If "DTC U1000" is displayed with other DTCs, first perform the trouble diagnosis for "DTC U1000 CAN
COMMUNICATION". Refer to AT-94.
Revision: 2007 April AT-5 2008 FX35/FX45
INDEX FOR DTC
< SERVICE INFORMATION >
DTC
OBD-II Except OBD-II
Items
Reference page
CONSULT-III CONSULT-III (CONSULT-III screen terms)
only "TRANSMIS-
GST(*1) SION"
-- P0615 STARTER RELAY/CIRC AT-97
P0700 P0700 TCM AT-101
P0705 P0705 PNP SW/CIRC AT-102
P0710 P1710 ATF TEMP SEN/CIRC AT-132
P0717 P0717 TURBINE REV S/CIRC AT-106
P0720 P0720 VEH SPD SEN/CIR AT AT-108
P0725 P0725 ENGINE SPEED SIG AT-112
P0731 P0731 A/T 1ST GR FNCTN AT-114
P0732 P0732 A/T 2ND GR FNCTN AT-116
P0733 P0733 A/T 3RD GR FNCTN AT-118
P0734 P0734 A/T 4TH GR FNCTN AT-120
P0735 P0735 A/T 5TH GR FNCTN AT-122
P0740 P0740 TCC SOLENOID/CIRC AT-124
P0744(*2) P0744 A/T TCC S/V FNCTN AT-126
P0745 P0745 L/PRESS SOL/CIRC AT-128
P1705 P1705 TP SEN/CIRC A/T AT-130
-- P1721 VEH SPD SE/CIR-MTR AT-137
P1730 P1730 A/T INTERLOCK AT-139
-- P1731 A/T 1ST E/BRAKING AT-141
P1752 P1752 I/C SOLENOID/CIRC AT-143
P1757 P1757 FR/B SOLENOID/CIRC AT-145
P1762 P1762 D/C SOLENOID/CIRC AT-147
P1767 P1767 HLR/C SOL/CIRC AT-149
P1772 P1772 LC/B SOLENOID/CIRC AT-151
(*2) P1774 LC/B SOLENOID FNCT AT-153
P1774
-- P1815 MANU MODE SW/CIRC AT-155
U1000 U1000 CAN COMM CIRCUIT AT-94
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.
Revision: 2007 April AT-6 2008 FX35/FX45
PRECAUTIONS
< SERVICE INFORMATION >
PRECAUTIONS
A
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000001612925
B
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS AT
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the "SUPPLEMENTAL RESTRAINT SYS-
TEM" and "SEAT BELTS" of this Service Manual. D
WARNING:
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