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AUTOMATIC TRANSAXLE
SECTION AT (H × CVT)
CONTENTS
TROUBLE DIAGNOSIS - INDEX ....................................3
Alphabetical & P No. Index for DTC ...........................3
PRECAUTIONS ...............................................................5
(SRS)
AIR BAG
²
and
SEAT BELT
Wiring Diagram - CVT - MAIN ...................................45
SWITCH .........................................................................48
Description .................................................................48
Wiring Diagram - AT - PNP/SW .................................50
Diagnostic Procedure ................................................51
Component Inspection ...............................................53
CIRCUIT .........................................................................54
Description .................................................................54
Wiring Diagram - AT - FTS ........................................56
Diagnostic Procedure ................................................57
DTC P0715 PRIMARY SPEED SENSOR .....................59
Description .................................................................59
Wiring Diagram - AT - VSSA/T ..................................60
Diagnostic Procedure ................................................61
Component Inspection ...............................................61
(SECONDARY SPEED SENSOR) ................................62
Description .................................................................62
Wiring Diagram - AT - VSSA/T ..................................64
Diagnostic Procedure ................................................65
Component Inspection ...............................................65
DTC P0725 ENGINE SPEED SIGNAL .........................66
Description .................................................................66
Wiring Diagram - AT - ENGSS ..................................67
Diagnostic Procedure ................................................68
SOLENOID VALVE ........................................................69
Description .................................................................69
Wiring Diagram - AT - TCV ........................................71
Diagnostic Procedure ................................................72
Component Inspection ...............................................73
Description .................................................................74
......................................................5
System of CVT and Engine .........................................5
Precautions ..................................................................5
Service Notice or Precautions .....................................6
Wiring Diagrams and Trouble Diagnosis .....................7
PREPARATION ...............................................................8
Special Service Tools ..................................................8
OVERALL SYSTEM ........................................................9
CVT Electrical Parts Location ......................................9
Circuit Diagram ..........................................................10
Cross-sectional View - RE0F06A .............................. 11
Control System ..........................................................12
DESCRIPTION ...............................................................15
Introduction ................................................................15
OBD Function for CVT System .................................15
OBD Diagnostic Trouble Code (DTC) .......................15
Malfunction Indicator (MI) ..........................................18
CONSULT-II ...............................................................18
TROUBLE DIAGNOSIS - INTRODUCTION ..................29
Introduction ................................................................29
Work Flow ..................................................................32
CVT Fluid Check .......................................................34
Stall Test ....................................................................34
Line Pressure Test .....................................................35
Road Test ...................................................................36
DESCRIPTION ...............................................................41
TCM Terminals and Reference Value. .......................41
²
AT
²
²
191426654.004.png
CONTENTS (Cont’d)
Wiring Diagram - AT - LPSV. .....................................76
Diagnostic Procedure ................................................77
Component Inspection ...............................................78
Description .................................................................79
Wiring Diagram - AT - TPS ........................................81
Diagnostic Procedure ................................................82
Component Inspection ...............................................85
DTC P1777 STEP MOTOR - CIRCUIT .........................86
Description .................................................................86
Wiring Diagram - AT - STM .......................................88
Diagnostic Procedure ................................................89
Component Inspection ...............................................90
DTC P1778 STEP MOTOR - FUNCTION .....................91
Description .................................................................91
Diagnostic Procedure ................................................93
Description .................................................................94
Wiring Diagram - AT - FPS ........................................96
Diagnostic Procedure ................................................97
Component Inspection ...............................................98
CVT SAFE FUNCTION ..................................................99
Description .................................................................99
Diagnostic Procedure ..............................................100
Description ...............................................................101
Diagnostic Procedure ..............................................102
CONTROL UNIT (EEPROM) .......................................103
Description ...............................................................103
Diagnostic Procedure ..............................................104
ITEMS . ..........................................................................105
Position Switch ........................................................105
Wiring Diagram - AT - NONDTC ............................. 110
ON-VEHICLE SERVICE .............................................. 114
Control Cable Adjustment ........................................ 114
REMOVAL AND INSTALLATION ............................... 116
Removal ................................................................... 116
Inspection. ................................................................ 116
Installation ................................................................ 117
Air Breather Hose .................................................... 118
CVT Fluid Cooler (Hyper CVT-M6) ......................... 118
Components ............................................................. 119
General Specifications .............................................120
Stall Revolution ........................................................120
Line Pressure. ..........................................................120
Removal and Installation .........................................120
AT-2
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC
Alphabetical & P No. Index for DTC
NCAT0001
ALPHABETICAL INDEX FOR DTC
NCAT0001S01
DTC
Items
(CONSULT-II screen terms)
ECM*1
CONSULT-II
GST*2
Reference page
ATF TEMP SEN/CIRC
0710
P0710
ENG SPEED SIG
0725
P0725
LINE PRESSURE SEN
1791
P1791
L/PRESS SOL/CIRC
0745
P0745
PNP SW/CIRC
0705
P0705
PRI SPEED SIG/CIRC
0715
P0715
STEP MOTOR/CIRC
1777
P1777
STEP MOTOR/FNCTN
1778
P1778
TP SEN/CIRC A/T*3
1705
P1705
TCC SOLENOID/CIRC
0740
P0740
VEH SPD SEN/CIR A/T
0720
P0720
*1: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO15031-6.
*3: When the fail-safe operation occurs, the MI illuminates.
AT-3
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TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC(Cont’d)
P NO. INDEX FOR DTC
=NCAT0001S02
DTC
Items
(CONSULT-II screen terms)
CONSULT-II
GST*2
ECM*1
Reference page
P0705
0705
PNP SW/CIRC
P0710
0710
ATF TEMP SEN/CIRC
P0715
0715
PRI SPEED SIG/CIRC
P0720
0720
VEH SPD SEN/CIR AT
P0725
0725
ENG SPEED SIG
P0740
0740
TCC SOLENOID/CIRC
P0745
0745
L/PRESS SOL/CIRC
P1705
1705
TP SEN/CIRC A/T*3
P1777
1777
STEP MOTOR/CIRC
P1778
1778
STEP MOTOR/FNCTN
P1791
1791
LINE PRESSURE SEN
*1: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO15031-6.
*3: When the fail-safe operation occurs, the MI illuminates.
AT-4
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PRECAUTIONS
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT
PRE-TENSIONER” NCAT0002
The Supplemental Restraint System “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a seat
belt, help to reduce the risk or severity of injury to the driver and front passenger in a frontal collision. The
Supplemental Restraint System consists of air bag modules (located in the center of the steering wheel and
on the instrument panel on the passenger side), seat belt pre-tensioners, a diagnosis sensor unit, warning
lamp, wiring harness and spiral cable.
In addition to the supplemental air bag modules for a frontal collision, the supplemental side air bag used along
with the seat belt helps to reduce the risk or severity of injury to the driver and front passenger in a side col-
lision. The supplemental side air bag consists of air bag modules (located in the outer side of front seats),
satellite sensor, diagnosis sensor unit (one of components of supplemental air bags for a frontal collision),
wiring harness, warning lamp (one of components of supplemental air bags for a frontal collision). Information
necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
I
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 performed
by an authorized NISSAN dealer.
I
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses (except “SEAT BELT PRE-TENSIONER” connector) can be
identified with yellow harness connector (and with yellow harness protector or yellow insulation
tape before the harness connectors).
Precautions for On Board Diagnostic (OBD)
System of CVT and Engine NCAT0198
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver
of a malfunction causing emission deterioration.
CAUTION:
I
Be sure to turn the ignition switch “OFF” and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc.
will cause the MI to light up.
I
Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
I
Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MI to light up due to a short circuit.
I
Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to a malfunction of the EGR system or fuel injection system, etc.
I
Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
Precautions
NCAT0003
I
Before connecting or disconnecting the TCM harness
connector, turn ignition switch OFF and disconnect nega-
tive battery terminal. Failure to do so may damage the
TCM. Because battery voltage is applied to TCM even if
ignition switch is turned off.
SEF289H
AT-5
I
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