2007 NISSAN 350Z Automatic Transmission Workshop Manual

AT-1
AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION AT
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AT
Revision: 2006 November2007 350Z
AUTOMATIC TRANSMISSION
INDEX FOR DTC ........................................................ 5
Alphabetical Index .................................................... 5
DTC No. Index ......................................................... 6
PRECAUTIONS .......................................................... 7
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 7
Precautions for Battery Service ................................ 7
Precautions for On Board Diagnostic (OBD) System
of A/T and Engine .................................................... 7
Precautions .............................................................. 8
Service Notice or Precautions .................................. 9
PREPARATION ......................................................... 10
Special Service Tools ............................................. 10
Commercial Service Tools ....................................... 11
A/T FLUID ................................................................. 12
Changing A/T Fluid ................................................ 12
Checking A/T Fluid ................................................. 12
A/T Fluid Cooler Cleaning ...................................... 14
A/T CONTROL SYSTEM .......................................... 17
Cross-sectional View .............................................. 17
Shift Mechanism ..................................................... 18
TCM Function ......................................................... 29
CAN Communication .............................................. 30
Input/Output Signal of TCM .................................... 30
Line Pressure Control ............................................ 31
Shift Control ........................................................... 32
Lock-up Control ...................................................... 34
Engine Brake Control ............................................. 35
Control Valve .......................................................... 35
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 37
Introduction ............................................................ 37
OBD-II Function for A/T System ............................. 37
One or Two Trip Detection Logic of OBD-II ............ 37
OBD-II Diagnostic Trouble Code (DTC) ................. 37
Malfunction Indicator Lamp (MIL) ........................... 39
TROUBLE DIAGNOSIS ............................................ 40
DTC Inspection Priority Chart ................................ 40
Fail-safe ................................................................. 40
How to Perform Trouble Diagnosis for Quick and Accurate Repair ...................................................... 42
A/T Electrical Parts Location .................................. 47
Circuit Diagram ....................................................... 48
Inspections Before Trouble Diagnosis .................... 49
Check Before Engine is Started .............................. 53
Check at Idle ........................................................... 53
Cruise Test — Part 1 .............................................. 55
Cruise Test — Part 2 .............................................. 57
Cruise Test — Part 3 .............................................. 58
Vehicle Speed at When Gears Shifting Occurs ...... 58
Vehicle Speed at Which Lock-up Occurs/Releases ... 58
Symptom Chart ....................................................... 59
TCM Input/Output Signal Reference Values ........... 83
CONSULT-III Function (TRANSMISSION) ............. 84
Diagnostic Procedure Without CONSULT-III .......... 92
DTC U1000 CAN COMMUNICATION LINE .............. 94
Description .............................................................. 94
On Board Diagnosis Logic ...................................... 94
Possible Cause ....................................................... 94
DTC Confirmation Procedure ................................. 94
Wiring Diagram — AT — CAN ................................ 95
Diagnostic Procedure ............................................. 96
DTC P0615 START SIGNAL CIRCUIT ..................... 97
Description .............................................................. 97
CONSULT-III Reference Value ............................... 97
On Board Diagnosis Logic ...................................... 97
Possible Cause ....................................................... 97
DTC Confirmation Procedure ................................. 97
Wiring Diagram — AT — STSIG ............................ 98
Diagnostic Procedure ............................................. 99
DTC P0700 TCM .....................................................101
Description ............................................................101
On Board Diagnosis Logic ....................................101
Possible Cause .....................................................101
DTC Confirmation Procedure ...............................101
Diagnostic Procedure ...........................................101
DTC P0705 PARK/NEUTRAL POSITION SWITCH .102
Description ............................................................102
CONSULT-III Reference Value .............................102
On Board Diagnosis Logic ....................................102

AT-2Revision: 2006 November2007 350Z Possible Cause .....................................................102
DTC Confirmation Procedure ...............................102
Wiring Diagram — AT — PNP/SW .......................103
Diagnostic Procedure ...........................................104
DTC P0717 TURBINE REVOLUTION SENSOR ....106
Description ............................................................106
CONSULT-III Reference Value .............................106
On Board Diagnosis Logic ....................................106
Possible Cause .....................................................106
DTC Confirmation Procedure ...............................106
Diagnostic Procedure ...........................................107
DTC P0720 VEHICLE SPEED SENSOR A/T (REV-
OLUTION SENSOR) ...............................................108
Description ............................................................108
CONSULT-III Reference Value .............................108
On Board Diagnosis Logic ....................................108
Possible Cause .....................................................108
DTC Confirmation Procedure ...............................108
Wiring Diagram — AT — VSSA/T .........................110
Diagnostic Procedure ............................................111
DTC P0725 ENGINE SPEED SIGNAL ...................113
Description ............................................................113
CONSULT-III Reference Value .............................113
On Board Diagnosis Logic ....................................113
Possible Cause .....................................................113
DTC Confirmation Procedure ...............................113
Diagnostic Procedure ...........................................114
DTC P0731 A/T 1ST GEAR FUNCTION .................115
Description ............................................................115
On Board Diagnosis Logic ....................................115
Possible Cause .....................................................115
DTC Confirmation Procedure ...............................115
Diagnostic Procedure ...........................................116
DTC P0732 A/T 2ND GEAR FUNCTION ................117
Description ............................................................117
On Board Diagnosis Logic ....................................117
Possible Cause .....................................................117
DTC Confirmation Procedure ...............................117
Diagnostic Procedure ...........................................118
DTC P0733 A/T 3RD GEAR FUNCTION ................119
Description ............................................................119
On Board Diagnosis Logic ....................................119
Possible Cause .....................................................119
DTC Confirmation Procedure ...............................119
Diagnostic Procedure ...........................................120
DTC P0734 A/T 4TH GEAR FUNCTION ................121
Description ............................................................121
On Board Diagnosis Logic ....................................121
Possible Cause .....................................................121
DTC Confirmation Procedure ...............................121
Diagnostic Procedure ...........................................122
DTC P0735 A/T 5TH GEAR FUNCTION ................123
Description ............................................................123
On Board Diagnosis Logic ....................................123
Possible Cause .....................................................123
DTC Confirmation Procedure ...............................123
Diagnostic Procedure ...........................................124
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE .................................................125Description ............................................................125
CONSULT-III Reference Value ..............................125
On Board Diagnosis Logic ....................................125
Possible Cause .....................................................125
DTC Confirmation Procedure ................................125
Diagnostic Procedure ............................................126
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) .127
Description ............................................................127
CONSULT-III Reference Value ..............................127
On Board Diagnosis Logic ....................................127
Possible Cause .....................................................127
DTC Confirmation Procedure ................................127
Diagnostic Procedure ............................................128
DTC P0745 LINE PRESSURE SOLENOID VALVE .129
Description ............................................................129
CONSULT-III Reference Value ..............................129
On Board Diagnosis Logic ....................................129
Possible Cause .....................................................129
DTC Confirmation Procedure ................................129
Diagnostic Procedure ............................................130
DTC P1705 THROTTLE POSITION SENSOR ........131
Description ............................................................131
CONSULT-III Reference Value ..............................131
On Board Diagnosis Logic ....................................131
Possible Cause .....................................................131
DTC Confirmation Procedure ................................131
Diagnostic Procedure ............................................132
DTC P1710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................134
Description ............................................................134
CONSULT-III Reference Value ..............................134
On Board Diagnosis Logic ....................................134
Possible Cause .....................................................134
DTC Confirmation Procedure ................................134
Wiring Diagram — AT — FTS ...............................135
Diagnostic Procedure ............................................136
Component Inspection ..........................................138
DTC P1721 VEHICLE SPEED SENSOR MTR .......139
Description ............................................................139
CONSULT-III Reference Value ..............................139
On Board Diagnosis Logic ....................................139
Possible Cause .....................................................139
DTC Confirmation Procedure ................................139
Diagnostic Procedure ............................................140
DTC P1730 A/T INTERLOCK .................................141
Description ............................................................141
On Board Diagnosis Logic ....................................141
Possible Cause .....................................................141
DTC Confirmation Procedure ................................141
Judgment of A/T Interlock .....................................141
Diagnostic Procedure ............................................142
DTC P1731 A/T 1ST ENGINE BRAKING ...............143
Description ............................................................143
CONSULT-III Reference Value ..............................143
On Board Diagnosis Logic ....................................143
Possible Cause .....................................................143
DTC Confirmation Procedure ................................143
Diagnostic Procedure ............................................144
DTC P1752 INPUT CLUTCH SOLENOID VALVE ..145

AT-3
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MA
B
AT
Revision: 2006 November2007 350Z Description ........................................................... 145
CONSULT-III Reference Value ............................. 145
On Board Diagnosis Logic ................................... 145
Possible Cause .................................................... 145
DTC Confirmation Procedure ............................... 145
Diagnostic Procedure ........................................... 146
DTC P1757 FRONT BRAKE SOLENOID VALVE .. 147
Description ........................................................... 147
CONSULT-III Reference Value ............................. 147
On Board Diagnosis Logic ................................... 147
Possible Cause .................................................... 147
DTC Confirmation Procedure ............................... 147
Diagnostic Procedure ........................................... 148
DTC P1762 DIRECT CLUTCH SOLENOID VALVE . 149
Description ........................................................... 149
CONSULT-III Reference Value ............................. 149
On Board Diagnosis Logic ................................... 149
Possible Cause .................................................... 149
DTC Confirmation Procedure ............................... 149
Diagnostic Procedure ........................................... 150
DTC P1767 HIGH AND LOW REVERSE CLUTCH
SOLENOID VALVE ................................................. 151
Description ........................................................... 151
CONSULT-III Reference Value ............................. 151
On Board Diagnosis Logic ................................... 151
Possible Cause .................................................... 151
DTC Confirmation Procedure ............................... 151
Diagnostic Procedure ........................................... 152
DTC P1772 LOW COAST BRAKE SOLENOID
VALVE ..................................................................... 153
Description ........................................................... 153
CONSULT-III Reference Value ............................. 153
On Board Diagnosis Logic ................................... 153
Possible Cause .................................................... 153
DTC Confirmation Procedure ............................... 153
Diagnostic Procedure ........................................... 154
DTC P1774 LOW COAST BRAKE SOLENOID
VALVE FUNCTION ................................................. 155
Description ........................................................... 155
CONSULT-III Reference Value ............................. 155
On Board Diagnosis Logic ................................... 155
Possible Cause .................................................... 155
DTC Confirmation Procedure ............................... 155
Diagnostic Procedure ........................................... 156
DTC P1815 MANUAL MODE SWITCH .................. 157
Description ........................................................... 157
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... 157
On Board Diagnosis Logic ................................... 157
Possible Cause .................................................... 157
DTC Confirmation Procedure ............................... 157
Wiring Diagram — AT — MMSW ......................... 158
Diagnostic Procedure ........................................... 160
Component Inspection ......................................... 161
MAIN POWER SUPPLY AND GROUND CIRCUIT . 162
Wiring Diagram — AT — MAIN ............................ 162
Diagnostic Procedure ........................................... 163
CLOSED THROTTLE POSITION AND WIDE OPEN
THROTTLE POSITION CIRCUIT ........................... 166CONSULT-III Reference Value .............................166
Diagnostic Procedure ...........................................166
BRAKE SIGNAL CIRCUIT ......................................167
CONSULT-III Reference Value .............................167
Diagnostic Procedure ...........................................167
A/T INDICATOR CIRCUIT .......................................168
Description ............................................................168
CONSULT-III Reference Value .............................168
Diagnostic Procedure ...........................................168
TROUBLE DIAGNOSIS FOR SYMPTOMS ............169
Wiring Diagram — AT — NONDTC ......................169
A/T Check Indicator Lamp Does Not Come On ....172
Engine Cannot Be Started in “P” or “N” Position ..173
In “P” Position, Vehicle Moves When Pushed ......173
In “N” Position, Vehicle Moves ..............................174
Large Shock (“N” to “D” Position) .........................175
Vehicle Does Not Creep Backward in “R” Position .177
Vehicle Does Not Creep Forward in “D” Position . 179
Vehicle Cannot Be Started from D
1 ......................181
A/T Does Not Shift: D
1 → D2 ................................183
A/T Does Not Shift: D
2 → D3 ................................185
A/T Does Not Shift: D
3 → D4 ................................187
A/T Does Not Shift: D
4 → D5 ................................189
A/T Does Not Lock-up ..........................................191
A/T Does Not Hold Lock-up Condition ..................193
Lock-up Is Not Released ......................................194
Engine Speed Does Not Return to Idle ................195
Cannot Be Changed to Manual Mode ..................196
A/T Does Not Shift: 5th Gear → 4th Gear ............196
A/T Does Not Shift: 4th Gear → 3rd Gear ............198
A/T Does Not Shift: 3rd Gear → 2nd Gear ...........199
A/T Does Not Shift: 2nd Gear → 1st Gear ...........201
Vehicle Does Not Decelerate by Engine Brake ....202
SHIFT CONTROL SYSTEM ....................................204
Control Device Removal and Installation ..............204
Control Rod Removal and Installation ..................205
Adjustment of A/T Position ...................................206
Checking of A/T Position ......................................206
A/T SHIFT LOCK SYSTEM ....................................207
Description ............................................................207
Shift Lock System Electrical Parts Location .........207
Wiring Diagram — AT — SHIFT ...........................208
Diagnostic Procedure ...........................................209
KEY INTERLOCK CABLE ......................................212
Components .........................................................212
Removal and Installation ......................................213
ON-VEHICLE SERVICE ..........................................215
Control Valve with TCM and A/T Fluid Temperature
Sensor 2 ...............................................................215
Parking Components ............................................227
Rear Oil Seal ........................................................234
Revolution Sensor ................................................235
AIR BREATHER HOSE ..........................................241
Removal and Installation ......................................241
TRANSMISSION ASSEMBLY ................................242
Removal and Installation ......................................242
OVERHAUL ............................................................246
Components .........................................................246

AT-4Revision: 2006 November2007 350Z Oil Channel ...........................................................252
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ..........................253
DISASSEMBLY .......................................................255
Disassembly .........................................................255
REPAIR FOR COMPONENT PARTS ......................271
Oil Pump ...............................................................271
Front Sun Gear, 3rd One-way Clutch ...................274
Front Carrier, Input Clutch, Rear Internal Gear ....276
Mid Sun Gear, Rear Sun Gear, High and Low
Reverse Clutch Hub .............................................281
High and Low Reverse Clutch ..............................286
Direct Clutch .........................................................288
ASSEMBLY .............................................................290Assembly (1) .........................................................290
Adjustment ............................................................302
Assembly (2) .........................................................304
SERVICE DATA AND SPECIFICATIONS (SDS) ....311
General Specifications ..........................................311
Vehicle Speed at Which Gear Shifting Occurs ......311
Vehicle Speed at Which Lock-up Occurs/Releases .311
Stall Speed ............................................................311
Line Pressure ........................................................311
A/T Fluid Temperature Sensor ..............................312
Turbine Revolution Sensor ....................................312
Vehicle Speed Sensor A/T (Revolution Sensor) ...312
Reverse Brake ......................................................312
Total End Play .......................................................312

INDEX FOR DTC
AT-5
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MA
B
AT
Revision: 2006 November2007 350Z
INDEX FOR DTCPFP:00024
Alphabetical Index NCS00017
NOTE:
If DTC “U1000 CAN COMM CIRCUIT” is displayed with other DTCs, first perform the trouble diagnosis
for “DTC U1000 CAN COMMUNICATION LINE”. Refer to AT- 9 4
.

*1: These numbers are precribed by SAE J2012.

*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.Items
(CONSULT-III screen terms) DTC
Reference page OBD-II Except OBD-II
CONSULT-III
GST
*1
CONSULT-III
only “TRANSMIS-
SION”
A/T 1ST E/BRAKING — P1731AT- 1 4 3
A/T 1ST GR FNCTN P0731 P0731AT- 11 5
A/T 2ND GR FNCTN P0732 P0732AT- 11 7
A/T 3RD GR FNCTN P0733 P0733AT- 11 9
A/T 4TH GR FNCTN P0734 P0734AT- 1 2 1
A/T 5TH GR FNCTN P0735 P0735AT- 1 2 3
A/T INTERLOCK P1730 P1730AT- 1 4 1
A/T TCC S/V FNCTN
P0744*2P0744AT- 1 2 7
ATF TEMP SEN/CIRC P0710 P1710AT- 1 3 4
CAN COMM CIRCUIT U1000 U1000AT- 9 4
D/C SOLENOID/CIRC P1762 P1762AT- 1 4 9
ENGINE SPEED SIG P0725 P0725AT- 11 3
FR/B SOLENOID/CIRC P1757 P1757AT- 1 4 7
HLR/C SOL/CIRC P1767 P1767AT- 1 5 1
I/C SOLENOID/CIRC P1752 P1752AT- 1 4 5
L/PRESS SOL/CIRC P0745 P0745AT- 1 2 9
LC/B SOLENOID/CIRC P1772 P1772AT- 1 5 3
LC/B SOLENOID FNCT
P1774*2P1774AT- 1 5 5
MANU MODE SW/CIRC — P1815AT- 1 5 7
PNP SW/CIRC P0705 P0705AT- 1 0 2
STARTER RELAY/CIRC — P0615AT- 9 7
TCC SOLENOID/CIRC P0740 P0740AT- 1 2 5
TCM P0700 P0700AT- 1 0 1
TP SEN/CIRC A/T P1705 P1705AT- 1 3 1
TURBINE REV S/CIRC P0717 P0717AT- 1 0 6
VEH SPD SE/CIR-MTR — P1721AT- 1 3 9
VEH SPD SEN/CIR AT P0720 P0720AT- 1 0 8

AT-6
INDEX FOR DTC
Revision: 2006 November2007 350Z
DTC No. Index NCS00018
NOTE:
If DTC “U1000 CAN COMM CIRCUIT” is displayed with other DTCs, first perform the trouble diagnosis
for “DTC U1000 CAN COMMUNICATION LINE”. Refer to AT- 9 4
.

*1: These numbers are precribed by SAE J2012.

*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.DTC
Items
(CONSULT-III screen terms)Reference page OBD-II Except OBD-II
CONSULT-III
GST
*1
CONSULT-III
only “TRANSMIS-
SION”
— P0615 STARTER RELAY/CIRCAT- 9 7
P0700 P0700 TCMAT- 1 0 1
P0705 P0705 PNP SW/CIRCAT- 1 0 2
P0710 P1710 ATF TEMP SEN/CIRCAT- 1 3 4
P0717 P0717 TURBINE REV S/CIRCAT- 1 0 6
P0720 P0720 VEH SPD SEN/CIR ATAT- 1 0 8
P0725 P0725 ENGINE SPEED SIGAT- 11 3
P0731 P0731 A/T 1ST GR FNCTNAT- 11 5
P0732 P0732 A/T 2ND GR FNCTNAT- 11 7
P0733 P0733 A/T 3RD GR FNCTNAT- 11 9
P0734 P0734 A/T 4TH GR FNCTNAT- 1 2 1
P0735 P0735 A/T 5TH GR FNCTNAT- 1 2 3
P0740 P0740 TCC SOLENOID/CIRCAT- 1 2 5
P0744*2P0744 A/T TCC S/V FNCTNAT- 1 2 7
P0745 P0745 L/PRESS SOL/CIRCAT- 1 2 9
P1705 P1705 TP SEN/CIRC A/TAT- 1 3 1
— P1721 VEH SPD SE/CIR-MTRAT- 1 3 9
P1730 P1730 A/T INTERLOCKAT- 1 4 1
— P1731 A/T 1ST E/BRAKINGAT- 1 4 3
P1752 P1752 I/C SOLENOID/CIRCAT- 1 4 5
P1757 P1757 FR/B SOLENOID/CIRCAT- 1 4 7
P1762 P1762 D/C SOLENOID/CIRCAT- 1 4 9
P1767 P1767 HLR/C SOL/CIRCAT- 1 5 1
P1772 P1772 LC/B SOLENOID/CIRCAT- 1 5 3
P1774*2P1774 LC/B SOLENOID FNCTAT- 1 5 5
— P1815 MANU MODE SW/CIRCAT- 1 5 7
U1000 U1000 CAN COMM CIRCUITAT- 9 4

PRECAUTIONS
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Revision: 2006 November2007 350Z
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NCS00019
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
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 SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Battery ServiceNCS0001A
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Precautions for On Board Diagnostic (OBD) System of A/T and EngineNCS0001B
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the battery cable from the negative termi-
nal before any repair or inspection work. The open/short circuit of related switches, sensors, sole-
noid valves, etc. Will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. May cause the MIL to light up due to a short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system, etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.

AT-8
PRECAUTIONS
Revision: 2006 November2007 350Z
Precautions NCS0001C

Before connecting or disconnecting the A/T assembly har-
ness connector, turn ignition switch OFF and disconnect
the battery cable from the negative terminal. Because bat-
tery voltage is applied to TCM even if ignition switch is
turned OFF.

After performing each TROUBLE DIAGNOSIS, perform
“DTC Confirmation Procedure”.
If the repair is completed the DTC should not be displayed
in the “DTC Confirmation Procedure”.

Always use the specified brand of ATF. Refer to MA-11, "Fluids and Lubricants" .

Use lint-free paper not cloth rags during work.

After replacing the ATF, dispose of the waste oil using the methods prescribed by law, ordinance, etc.

Before proceeding with disassembly, thoroughly clean the outside of the A/T. It is important to prevent the
internal parts from becoming contaminated by dirt or other foreign matter.

Disassembly should be done in a clean work area.

Use lint-free paper or towels for wiping parts clean. Common shop rags can leave fibers that could inter-
fere with the operation of the A/T.

Place disassembled parts in order for easier and proper assembly.

All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.

Gaskets, seals and O-rings should be replaced any time the A/T is disassembled.

It is very important to perform functional tests whenever they are indicated.

The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.

Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.

Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.

Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.

Clean or replace ATF cooler if excessive foreign material is found in oil pan or clogging strainer. Refer to
AT- 9 , "
ATF COOLER SERVICE" .

After overhaul, refill the A/T with new ATF.

When the A/T drain plug is removed, only some of the ATF is drained. Old ATF will remain in torque con-
verter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer
to AT- 1 2 , "
Changing A/T Fluid" , AT- 1 2 , "Checking A/T Fluid" .
SEF289H
SEF217U