2008 INFINITI FX35 service indicator

AT-1
TRANSMISSION/TRANSAXLE
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CONTENTS
AUTOMATIC TRANSMISSION
SERVICE INFORMATION .. ..........................5
INDEX FOR DTC ............................................ .....5
Alphabetical Index ............................................... ......5
DTC No. Index ..........................................................5
PRECAUTIONS ...................................................7
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
7
Precaution for On Board Diagnosis (OBD) System
of A/T and Engine .....................................................
7
Precaution .................................................................7
Service Notice or Precaution .....................................8
PREPARATION ...................................................9
Special Service Tool ........................................... ......9
Commercial Service Tool ..........................................9
A/T FLUID ...........................................................11
Changing A/T Fluid ............................................. ....11
Checking A/T Fluid ..................................................11
A/T Fluid Cooler Cleaning .......................................13
A/T CONTROL SYSTEM ....................................16
Cross-Sectional View (2WD Models) .................. ....16
Cross-Sectional View (VQ35DE Models for AWD) ....17
Cross-Sectional View (VK45DE Models for AWD) ....18
Shift Mechanism .................................................. ....18
TCM Function ..........................................................29
CAN Communication ...............................................30
Input/Output Signal of TCM .....................................31
Line Pressure Control .............................................31
Shift Control ............................................................33
Lock-up Control .......................................................34
Engine Brake Control ..............................................35
Control Valve ...........................................................36
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......38
Introduction ......................................................... ....38
OBD-II Function for A/T System ..............................38
One or Two Trip Detection Logic of OBD-II ............38
OBD-II Diagnostic Trouble Code (DTC) .............. ....38
Malfunction Indicator Lamp (MIL) ............................40
TROUBLE DIAGNOSIS ....................................41
DTC Inspection Priority Chart ..................................41
Fail-Safe ..................................................................41
How to Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
42
A/T Electrical Parts Location ...................................48
Circuit Diagram ........................................................49
Inspections Before Trouble Diagnosis .....................49
Road Test ................................................................53
Vehicle Speed at Which Gear Shifting Occurs ........58
Vehicle Speed at Which Lock-up Occurs/Releas-
es .............................................................................
58
Symptom Chart ........................................................59
TCM Input/Output Signal Reference Value .............83
CONSULT-III Function (TRANSMISSION) ..............84
Diagnosis Procedure without CONSULT-III ............91
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
Diagnosis Procedure ...............................................96
DTC P0615 START SIGNAL CIRCUIT .............97
Description ...............................................................97
CONSULT-III Reference Value in Data Monitor
Mode ........................................................................
97
On Board Diagnosis Logic .......................................97
Possible Cause ........................................................97
DTC Confirmation Procedure ..................................97
Wiring Diagram - AT - STSIG ..................................98
Diagnosis Procedure ...............................................99
DTC P0700 TCM .............................................101
Description .............................................................101
On Board Diagnosis Logic .....................................101
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AT-4
BRAKE SIGNAL CIRCUIT ..............................165
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
165
Diagnosis Procedure .............................................165
A/T INDICATOR CIRCUIT ...............................166
Description ........................................................... ..166
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
166
Diagnosis Procedure .............................................166
TROUBLE DIAGNOSIS FOR SYMPTOMS .....167
Wiring Diagram - AT - NONDTC .......................... ..167
A/T Check Indicator Lamp Does Not Come On .....170
Engine Cannot Be Started in "P" or "N" Position ...170
In "P" Position, Vehicle Moves When Pushed .......171
In "N" Position, Vehicle Moves ..............................172
Large Shock ("N" to "D" Position) ..........................173
Vehicle Does Not Creep Backward in "R" Position ..175
Vehicle Does Not Creep Forward in "D" Position ..178
Vehicle Cannot Be Started from D1 .......................180
A/T Does Not Shift: D1→ D2 ................................ ..182
A/T Does Not Shift: D2→ D3 ................................ ..184
A/T Does Not Shift: D3→ D4 ................................ ..186
A/T Does Not Shift: D4→ D5 ................................ ..188
A/T Does Not Lock-up ......................................... ..190
A/T Does Not Hold Lock-up Condition ...................192
Lock-up Is Not Released .......................................194
Engine Speed Does Not Return to Idle .................194
Cannot Be Changed to Manual Mode ...................195
A/T Does Not Shift: 5th Gear → 4th Gear ........... ..196
A/T Does Not Shift: 4th Gear → 3rd Gear ........... ..197
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 ............................205
Control Device Removal and Installation ............. ..205
Control Rod Removal and Installation ...................206
Adjustment of A/T Position ....................................207
Checking of A/T Position .......................................207
A/T SHIFT LOCK SYSTEM .............................208
Description ........................................................... ..208
Shift Lock System Electrical Parts Location ..........208
Wiring Diagram - AT - SHIFT .................................209
Diagnosis Procedure .............................................209
KEY INTERLOCK CABLE ...............................212
Component .......................................................... ..212
Removal and Installation .......................................212
ON-VEHICLE SERVICE ...................................215
Control Valve with TCM and A/T Fluid Tempera-
ture Sensor 2 ....................................................... .
215
Parking Component (2WD Models Only) ..............226
Rear Oil Seal .........................................................233
Revolution Sensor Component (2WD Models
Only) .....................................................................
233
AIR BREATHER HOSE ....................................239
Removal and Installation ...................................... .239
TRANSMISSION ASSEMBLY ..........................241
Removal and Installation (2WD Models) .............. .241
Removal and Installation (AWD Models) ..............243
OVERHAUL ......................................................249
Component .......................................................... .249
Oil Channel ...........................................................261
Location of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ......................... .
264
DISASSEMBLY .............................................. ..267
Disassembly ......................................................... .267
REPAIR FOR COMPONENT PARTS ..............285
Oil Pump .............................................................. .285
Front Sun Gear, 3rd One-Way Clutch ...................287
Front Carrier, Input Clutch, Rear Internal Gear .....289
Mid Sun Gear, Rear Sun Gear, High and Low Re-
verse Clutch Hub ..................................................
295
High and Low Reverse Clutch ..............................301
Direct Clutch .........................................................303
ASSEMBLY .................................................... ..306
Assembly (1) ........................................................ .306
Adjustment ............................................................320
Assembly (2) .........................................................323
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
330
General Specification ........................................... .330
Vehicle Speed at Which Gear Shifting Occurs .....330
Vehicle Speed at Which Lock-up Occurs/Releas-
es ..........................................................................
331
Stall Speed ............................................................331
Line Pressure ........................................................331
A/T Fluid Temperature Sensor ..............................332
Turbine Revolution Sensor ...................................332
Vehicle Speed Sensor A/T (Revolution Sensor) ...332
Reverse Brake ......................................................332
Total End Play .......................................................332
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PRECAUTIONSAT-7
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PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612925
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
 To avoid rendering the SRS inoper ative, 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 performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution for On Board Diagnosis (OBD) System of A/T and EngineINFOID:0000000001327123
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 sw itch OFF and disconnect the battery cable from the negative terminal
before any repair or inspection work. The open/s hort circuit of related switches, sensors, solenoid
valves, etc. Will cause the MIL to light up.
 Be sure to connect and lock the connectors secure ly 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 li ght up due to a short circuit.
 Be sure to connect rubber tubes properly afte r work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EVAP system or fuel injection system, etc.
 Be sure to erase the unnecessary malfunction informa tion (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
PrecautionINFOID:0000000001327124
 Before connecting or disco nnecting the A/T assembly har-
ness connector, turn ignition switch OFF and disconnect the
battery cable from the negative terminal. Because battery
voltage is applied to TCM even if ignition switch is turned
OFF.
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AT-8
< SERVICE INFORMATION >
PRECAUTIONS
After performing each TROUBLE DIAGNOSIS, perform “DTC
(Diagnostic Trouble Code) 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-9, "
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 out side of the transmission. It is important to pre-
vent the internal parts from becoming cont aminated 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 interfere
with the operation of the transmission.
 Place disassembled parts in order for easier and proper assembly.
 All parts should be carefully cleansed with a general purpose, non-flammable solvent before inspection or
reassembly.
 Gaskets, seals and O-rings should be replaced any time the transmission 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 s lide 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.
 After overhaul, refill the transmission with new ATF.
 When the A/T drain plug is removed, only some of t he 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- 11 , "
Changing A/T Fluid", AT- 11 , "Checking A/T Fluid".
Service Notice or PrecautionINFOID:0000000001327125
ATF COOLER SERVICE
If ATF contains frictional material (clutches, bands, etc. ), or if an A/T is repaired, overhauled, or replaced,
inspect and clean the A/T fluid cooler mounted in the radiat or or replace the radiator. Flush cooler lines using
cleaning solvent and compressed air after repair. For A/T fluid cooler cleaning procedure, refer to AT-13, "
A/T
Fluid Cooler Cleaning". For radiator replacement, refer to CO-13 (for VQ35DE), CO-40 (for VK45DE).
OBD-II SELF-DIAGNOSIS
 A/T self-diagnosis is performed by the TCM in comb ination with the ECM. The results can be read through
the blinking pattern of the A/T CHECK indicator or the malfunction indicator lamp (MIL). Refer to the table on
AT-84, "
CONSULT-III Function (TRANSMISSION)" for the indicator used to display each self-diagnostic
result.
 The self-diagnostic results indicated by the MIL ar e automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure on AT-38, "
OBD-II Diagnostic Trouble Code (DTC)" to complete the
repair and avoid unnecessary blinking of the MIL.
For details of OBD-II, refer to EC-54
(for VQ35DE) or EC-632 (for VK45DE).
 Certain systems and components, especially those re lated to OBD, may use the new style slide-lock-
ing type harness connector. For descrip tion and how to disconnect, refer to PG-68
.
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A/T CONTROL SYSTEMAT-29
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TCM FunctionINFOID:0000000001327135
The function of the TCM is to:
 Receive input signals sent from various switches and sensors.
 Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
 Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transmission senses vehicle operating condi tions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
SCIA1519E
SENSORS (or SIGNALS)
⇒TCM
⇒ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Manual mode switch signal
Stop lamp switch signal
Turbine revolution sensor
ATF pressure switch Shift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-III co
mmunication
line
Duet-EA control
CAN system Input clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch sole-
noid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Starter relay
Back-up lamp relay
:

AT-38
< SERVICE INFORMATION >
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
IntroductionINFOID:0000000001327143
The A/T system has two self-diagnostic systems.
The first is the emission-related on board diagnostic syst em (OBD-II) performed by the TCM in combination
with the ECM. The malfunction is indicated by the MI L (malfunction indicator lamp) and is stored as a DTC in
the ECM memory but not the TCM memory.
The second is the TCM original self-diagnosis indicat ed by the A/T CHECK indicator lamp. The malfunction is
stored in the TCM memory. The detected items are ov erlapped with OBD-II self-diagnostic items. For detail,
refer to AT-84, "
CONSULT-III Function (TRANSMISSION)".
OBD-II Function for A/T SystemINFOID:0000000001327144
The ECM provides emission-related on board diagnostic (O BD-II) functions for the A/T system. One function
is to receive a signal from the TCM used with OBD-relat ed parts of the A/T system. The signal is sent to the
ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a
diagnostic result by means of the MIL (malfunction indi cator lamp) on the instrument panel. Sensors, switches
and solenoid valves are used as sensing elements.
The MIL automatically illuminates in “One or Two Trip Detection Logic” when a malfunction is sensed in rela-
tion to A/T system parts.
One or Two Trip Detection Logic of OBD-IIINFOID:0000000001327145
ONE TRIP DETECTION LOGIC
If a malfunction is sensed during the first test drive, the MIL will illuminate and the malfunction will be stored in
the ECM memory as a DTC. The TCM is not provided with such a memory function.
TWO TRIP DETECTION LOGIC
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. — 1st trip
If the same malfunction as that experienced during the fi rst test drive is sensed during the second test drive,
the MIL will illuminate. — 2nd trip
The “Trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
OBD-II Diagnostic Trouble Code (DTC)INFOID:0000000001327146
HOW TO READ DTC AND 1ST TRIP DTC
DTC and 1st trip DTC can be read by the following methods.
( with CONSULT-III or GST) CONSULT-III or GST (Generic Scan Tool) Examples: P0705, P0720 etc.
These DTC are prescribed by SAE J2012.
(CONSULT-III also displays the malfunctioning component or system.)
 1st trip DTC No. is the same as DTC No.
 Output of the diagnostic troubl e code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring or
occurred in the past and returned to normal.
CONSULT-III can identify them as shown below, therefore, CONSULT-III (if available) is recom-
mended.
- DTC or 1st trip DTC of malfunction is displayed in SELF-DIAGNOSTIC RESULTS mode for “ENGINE” with
CONSULT-III. Time data indicates how many times the vehicle was driven after the last detection of a DTC.
- If the DTC is being detected currently, the time data will be “0”.
- If a 1st trip DTC is stored in t he ECM, the time data will be “1t”.
Freeze Frame Data and 1st Trip Freeze Frame Data
The ECM has a memory function, which stores the driv ing condition such as fuel system status, calculated
load value, engine coolant temperature, short term f uel trim, long term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-III
or GST. The 1st trip freeze frame data can only be disp layed on the CONSULT-III screen, not on the GST. For
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ON BOARD DIAGNOSTIC (OBD) SYSTEMAT-39
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detail, refer to EC-117, "CONSULT-III Function (ENGINE)" (for VQ35DE) or EC-695, "CONSULT-III Function
(ENGINE)" (for VK45DE).
Only one set of freeze frame data (either 1st trip freez e frame data of freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM me mory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.
Both 1st trip freeze frame data and freeze frame data (along with the DTC) are cleared when the ECM mem-
ory is erased.
HOW TO ERASE DTC
The diagnostic trouble code can be erased by CONSULT- III, GST or ECM DIAGNOSTIC TEST MODE as
described following.
 If the battery cable is disconnected, the diagnost ic trouble code will be lost within 24 hours.
 When you erase the DTC, using CONSULT-III or GS T is easier and quicker than switching the mode
selector on the ECM.
The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC
related to OBD-II. For details, refer to EC-55, "
Emission-Related Diagnostic Information" (for VQ35DE) or EC-
633, "Emission-related Diagnostic Information" (for VK45DE).
 Diagnostic trouble codes (DTC)
 1st trip diagnostic trouble codes (1st trip DTC)
 Freeze frame data
 1st trip freeze frame data
 System readiness test (SRT) codes
 Test values
HOW TO ERASE DTC (WITH CONSULT-III)
1. The emission related diagnostic information in t he TCM and ECM can be erased by selecting “ALL Erase”
in the “Description” of “FINAL CHECK” mode with CONSULT-III.
HOW TO ERASE DTC (WITH GST)
1. If the ignition switch stays ON after repair work, be su re to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Perform “TCM SELF-DIAGNOSTIC PR OCEDURE (No Tools)”. Refer to AT-91, "
Diagnosis Procedure
without CONSULT-III". (The engine warm-up step can be ski pped when performing the diagnosis only to
erase the DTC.)
3. Select Mode 4 with Generic Scan Tool (GST). For details, refer to EC-125, "
Generic Scan Tool (GST)
Function" (for VQ35DE) or EC-704, "Generic Scan Tool (GST) Function" (for VK45DE).
HOW TO ERASE DTC (NO TOOLS)
The A/T CHECK indicator lamp is located on the instrument panel.
1. If the ignition switch stays ON after repair work, be su re to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Perform “TCM SELF-DIAGNOSTIC PR OCEDURE (No Tools)”. Refer to AT-91, "
Diagnosis Procedure
without CONSULT-III". (The engine warm-up step can be ski pped when performing the diagnosis only to
erase the DTC.)
3. Perform “OBD-II SELF-DI AGNOSTIC PROCEDURE (No tools)”. Refer to EC-55, "
Emission-Related
Diagnostic Information" (for VQ35DE) or EC-633, "Emission-related Diagnostic Information" (for
VK45DE).
Priority Items
1 Freeze frame data Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2 Except the above items (Includes A/T related items)
3 1st trip freeze frame data
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AT-40
< SERVICE INFORMATION >
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Malfunction Indicator Lamp (MIL)
INFOID:0000000001327147
DESCRIPTION
The MIL is located on the instrument panel.
1. The MIL will light up when the ignition switch is turned ON with- out the engine running. This is a bulb check.
 If the MIL does not light up, refer to DI-34
, or see EC-591 (for
VQ35DE) or EC-1194
(for VK45DE).
2. When the engine is started, the MIL should go off. If the MIL remains on, the on board diagnostic system has
detected an engine system malfunction.
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