2002 NISSAN TERRANO engine control

Edition: February 2002
Release: February 2002 (01)
Publication No.: SM2E00-1R20E0E
GENERAL INFORMATIONGI
MAINTENANCEMA
ENGINE MECHANICALEM
ENGINE LUBRICATION &
COOLING SYSTEMSLC
ENGINE CONTROL SYSTEMEC
ACCELERATOR CONTROL,
FUEL & EXHAUST SYSTEMFE
CLUTCHCL
MANUAL TRANSMISSIONMT
AUTOMATIC TRANSMISSIONAT
TRANSFERTF
PROPELLER SHAFT &
DIFFERENTIAL CARRIERPD
FRONT AXLE & FRONT SUSPENSIONFA
REAR AXLE & REAR SUSPENSIONRA
BRAKE SYSTEMBR
STEERING SYSTEMST
RESTRAINT SYSTEMRS
BODY & TRIMBT
HEATER & AIR CONDITIONERHA
STARTING & CHARGING SYSTEMSSC
ELECTRICAL SYSTEMEL
ALPHABETICAL INDEXIDX
TERRANO
MODEL R20 SERIES
NISSAN EUROPE N.V.
NISSAN EUROPE N.V.
Produced in The Netherlands

QUICK REFERENCE INDEX

AUTOMATIC TRANSMISSION
SECTION
AT
CONTENTS
PREPARATION AND PRECAUTIONS............................3
Special Service Tools ..................................................3
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............4
Precautions ..................................................................4
Service Notice or Precautions .....................................5
OVERALL SYSTEM........................................................6
A/T Electrical Parts Location .......................................6
Wiring Diagram - A/T -.................................................7
Cross-sectional View ...................................................8
Hydraulic Control Circuits ............................................9
Shift Mechanism ........................................................10
Control System ..........................................................12
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................14
Self-diagnosis ............................................................14
Diagnosis by CONSULT-II .........................................20
TROUBLE DIAGNOSIS - Introduction........................22
Introduction ................................................................22
Diagnostic Worksheet ................................................23
Work Flow ..................................................................26
TROUBLE DIAGNOSIS - Basic Inspection................27
A/T Fluid Check .........................................................27
Stall Test ....................................................................27
Line Pressure Test .....................................................30
Road Test...................................................................32
TROUBLE DIAGNOSIS - General Description...........43
Symptom Chart ..........................................................43
TCM Terminals and Reference Value........................46
TROUBLE DIAGNOSIS FOR VHCL SPEED
SEN×A/T.........................................................................49
Wiring Diagram - AT - VSSA/T ..................................49
Vehicle Speed Sensor×A/T (Revolution sensor) ........50
TROUBLE DIAGNOSIS FOR VHCL SPEED
SEN×MTR.......................................................................52
Wiring Diagram - AT - VSSMTR ................................52
Vehicle Speed Sensor×MTR ......................................54TROUBLE DIAGNOSIS FOR THROTTLE POSI
SEN................................................................................56
Wiring Diagram - AT - TPS ........................................56
Throttle (Accelerator) Position Sensor ......................60
TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V
A.....................................................................................62
Wiring Diagram - AT - SSV/A ....................................62
Shift Solenoid Valve A ...............................................63
TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V
B.....................................................................................65
Wiring Diagram - AT - SSV/B ....................................65
Shift Solenoid Valve B ...............................................66
TROUBLE DIAGNOSIS FOR OVERRUN CLUTCH
S/V..................................................................................68
Wiring Diagram - AT - OVRCSV................................68
Overrun Clutch Solenoid Valve .................................69
TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V.....71
Wiring Diagram - AT - TCV........................................71
Torque Converter Clutch Solenoid Valve ..................72
TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP
SEN................................................................................75
Wiring Diagram - AT - BA/FTS ..................................75
A/T Fluid Temperature Sensor and TCM Power
Source........................................................................76
TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG....79
Wiring Diagram - AT - ENGSS ..................................79
Engine Speed Signal .................................................80
TROUBLE DIAGNOSIS FOR LINE PRESSURE
S/V..................................................................................82
Wiring Diagram - AT - LPSV......................................82
Line Pressure Solenoid Valve ...................................84
TROUBLE DIAGNOSIS FOR NON-DETECTABLE
ITEMS.............................................................................87
Wiring Diagram - AT - PNP/SW.................................87
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches ...................88
DIAGNOSTIC PROCEDURES FOR SYMPTOMS........94

1. SPORT Indicator Lamp Does Not Come On ........94
2. SPORT or SNOW Indicator Lamp Does Not
Come On...................................................................95
3. O/D OFF Indicator Lamp Does Not Come On......95
4. SPORT Indicator Lamp Does Not Come On ........96
5. Engine Cannot Be Started In²P²and²N²
Position......................................................................97
6. In²P²Position, Vehicle Moves Forward Or
Backward When Pushed...........................................97
7. In²N²Position, Vehicle Moves .............................98
8. Large Shock.²N²->²R²Position .........................99
9. Vehicle Does Not Creep Backward In²R²
Position....................................................................100
10. Vehicle Does Not Creep Forward In²D²,²2²
Or²1²Position.........................................................101
11. Vehicle Cannot Be Started From D
1.................102
12. A/T Does Not Shift: D
1-> D2Or Does Not
Kickdown: D
4-> D2..................................................103
13. A/T Does Not Shift: D
2-> D3............................104
14. A/T Does Not Shift: D
3-> D4.............................105
15. A/T Does Not Perform Lock-up .........................106
16. A/T Does Not Hold Lock-up Condition ..............107
17. Lock-up Is Not Released ...................................107
18. Engine Speed Does Not Return To Idle (Light
Braking D
4-> D3) .....................................................108
19. Vehicle Does Not Start From D
1.......................109
20. A/T Does Not Shift: D
2-> D1When
Depressing Accelerator Pedal................................. 110
21. A/T Does Not Shift: D
4-> D3, When
Overdrive Control Switch²ON²->²OFF²............... 111
22. A/T Does Not Shift: D
3-> 22, When Selector
Lever²D²->²2²Position......................................... 111
23. A/T Does Not Shift: 2
2-> 11, When Selector
Lever²2²->²1²Position ......................................... 112
24. Vehicle Does Not Decelerate By Engine
Brake........................................................................ 112
ON-VEHICLE SERVICE.............................................. 113Control Valve Assembly and Accumulators ............. 113
Revolution Sensor Replacement ............................. 114
Rear Oil Seal Replacement ..................................... 114
Parking Components Inspection.............................. 114
Park/neutral Position Switch Adjustment ................. 114
Manual Control Linkage Adjustment........................ 115
REMOVAL AND INSTALLATION................................ 116
Removal ................................................................... 116
Installation ................................................................ 117
MAJOR OVERHAUL................................................... 119
Oil Channel ..............................................................121
Locations of Needle Bearings, Thrust Washers
and Snap Rings .......................................................122
DISASSEMBLY............................................................123
Disassembly.............................................................123
REPAIR FOR COMPONENT PARTS..........................134
Oil Pump ..................................................................134
Control Valve Assembly ...........................................138
Control Valve Upper Body .......................................144
Control Valve Lower Body .......................................149
Reverse Clutch ........................................................151
High Clutch ..............................................................155
Forward and Overrun Clutches ...............................157
Low & Reverse Brake..............................................161
Forward Clutch Drum Assembly ..............................165
Rear Internal Gear and Forward Clutch Hub ..........168
Band Servo Piston Assembly ..................................171
Parking Pawl Components ......................................175
ASSEMBLY..................................................................177
Assembly (1) ............................................................177
Adjustment ...............................................................185
Assembly (2) ............................................................188
A/T FLUID COOLER SYSTEM...................................195
A/T Fluid Cooler.......................................................195
SERVICE DATA AND SPECIFICATIONS (SDS)........196
General Specifications .............................................196
Specifications and Adjustment.................................196
When you read wiring diagrams:
IRead GI section, ªHOW TO READ WIRING DIAGRAMSº.
ISee EL section, ªPOWER SUPPLY ROUTINGº for power distribution circuit.
When you perform trouble diagnoses, read GI section, ªHOW TO FOLLOW FLOW CHART IN
TROUBLE DIAGNOSESº and ªHOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRI-
CAL INCIDENTº.
CONTENTS(Cont'd)
AT- 2

CLUTCH AND BAND CHART
Shift positionq6Reverse
clutchq7High
clutchq16Forward
clutchq18Overrun
clutchBand servoq
17Forward
one-
way
clutchq19Low
one-
way
clutchq20Low &
reverse
brakeLock-up Remarks
2nd
apply3rd
release4th
apply
PPARK
POSITION
RqqREVERSE
POSITION
NNEUTRAL
POSITION
D*41stq*1
vv
Automatic shift
1)2)3)4 2ndq*1
qv
3rdqq*1
*2v
4thq
*3qq
21stq
vv
Automatic shift
1)2
2ndq
qv
11stqqvqLocks (held sta-
tionary)
in 1st speed
1+2 2ndqqqv
*1: Operates when overdrive control or A/T mode switch is being set in ªOFFº or ªSPORTº position.
*2: Oil pressure is applied to both 2nd ªapplyº side and 3rd ªreleaseº side of band servo piston. However, brake band does not contract because oil
pressure area on the ªreleaseº side is greater than that on the ªapplyº side.
*3: Oil pressure is applied to 4th ªapplyº side in condition *2 above, and brake band contracts.
*4: A/T will not shift to 4th when overdrive control or A/T mode switch is set in ªOFFº or ªSPORTº position.
q: Operates.
: Operates when throttle opening is less than 3/16, activating engine brake.
v: Operates during ªprogressiveº acceleration.
: Operates but does not affect power transmission.
: Operates when throttle opening is less than 3/16, but does not affect engine brake.
OVERALL SYSTEM
Shift Mechanism (Cont'd)
AT-11

Control System
OUTLINE
The automatic transmission senses vehicle operating conditions through various sensors. It always controls
the optimum shaft position and reduces shifting and lock-up shocks.
SENSORSTCMACTUATORS
Park/neutral position switch
Throttle (accelerator) position
sensor
Closed throttle position switch
Wide open throttle position
switch
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed sensor
Overdrive control switch
A/T mode switch
E
Shift control
Line pressure control
Lock-up control
Overrun clutch control
Timing control
Fail-safe control
Self-diagnosis
Duet-EU control
CONSULT-II communication line
control
E
Shift solenoid valve A
Shift solenoid valve B
Overrun clutch solenoid valve
Torque converter clutch
solenoid valve
Line pressure solenoid valve
O/D OFF or SPORT indicator
lamp
CONTROL SYSTEM
NAT230
OVERALL SYSTEM
AT-12

TCM FUNCTION
The function of the TCM is to:
IReceive input signals sent from various switches and sensors.
IDetermine required line pressure, shifting point, lock-up operation, and engine brake operation.
ISend required output signals to the respective solenoids.
INPUT/OUTPUT SIGNAL OF TCM
Sensors and solenoid valves Function
InputPark/neutral position switch Detects select lever position and sends a signal to TCM.
Throttle (accelerator) position sensor Detects throttle valve position and sends a signal to TCM.
Closed throttle position switch Detects throttle valve's fully-closed position and sends a signal to TCM.
Wide open throttle position switchDetects a throttle valve position of greater than 1/2 of full throttle and sends a
signal to TCM.
Engine speed signal From ECM.
A/T fluid temperature sensor Detects transmission fluid temperature and sends a signal to TCM.
Revolution sensor Detects output shaft rpm and sends a signal to TCM.
Vehicle speed sensorUsed as an auxiliary vehicle speed sensor. Sends a signal when revolution sen-
sor (installed on transmission) malfunctions.
Overdrive control switch
A/T mode switchSends a signal, which prohibits a shift to ªD
4º (overdrive) position, to the TCM.
OutputShift solenoid valve A/BSelects shifting point suited to driving conditions in relation to a signal sent from
TCM.
Line pressure solenoid valveRegulates (or decreases) line pressure suited to driving conditions in relation to
a signal sent from TCM.
Torque converter clutch solenoid valveRegulates (or decreases) lock-up pressure suited to driving conditions in relation
to a signal sent from TCM.
Overrun clutch solenoid valveControls an ªengine brakeº effect suited to driving conditions in relation to a sig-
nal sent from TCM.
O/D OFF indicator lamp
SPORT indicator lampShows TCM malfunctions, when A/T control components malfunction.
OVERALL SYSTEM
Control System (Cont'd)
AT-13

Self-diagnosis
After performing this procedure, place check marks for results on
the ªDIAGNOSTIC WORKSHEETº, AT-24. Reference pages are
provided following the items.
SELF-DIAGNOSTIC PROCEDURE (With CONSULT-II)
1. Turn on CONSULT-II and touch ªA/Tº.
If A/T is not displayed, check TCM power supply and ground
circuit. Refer to AT-46. If result is NG, refer to EL section
(ªPOWER SUPPLY ROUTINGº).
2. Touch ªSELF-DIAG RESULTSº.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs REAL-TIME SELF-DIAGNOSIS.
Also, any malfunction detected while in this mode will be dis-
played at real time.
Item Display Description Remarks
No failure
****NO FAILURE
****INo failure has been detected.
Initial start
*INITIAL START
*IThis is NOT a malfunction message.
Whenever shutting off a power supply to the
TCM, this message appears on the screen.
[]
Vehicle speed
sensor×A/T
(Revolution sensor)VHCL SPEED SEN×A/TINo signal input from vehicle speed sensor×A/T (revolution
sensor) during traveling due to disconnection, or input of
abnormal signal.
Vehicle speed
sensor×MTR (Meter)VHCL SPEED SEN×MTRINo signal input from vehicle speed sensor×MTR during
traveling due to disconnection, or input of abnormal signal.
Throttle (accelerator)
position sensorTHROTTLE POSI SENIThrottle (accelerator) position sensor signal voltage is
abnormally high.
IThrottle (accelerator) position sensor signal voltage is
abnormally low with closed throttle position switch ªOFFº
or wide open throttle position switch ªONº.
Shift solenoid valve A SHIFT SOLENOID/V AISpecified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
Shift solenoid valve B SHIFT SOLENOID/V BISpecified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
Overrun clutch
solenoid valveOVERRUN CLUTCH S/VISpecified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
T/C clutch solenoid
valveT/C CLUTCH SOL/VISpecified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
A/T fluid temperature
sensor/TCM power
sourceBATT/FLUID TEMP SENISupply voltage to TCM is abnormally low during traveling.
IFluid temperature signal voltage is abnormally high
(fluid temperature is low) during traveling.To be dis-
played in case
of abnormality
and no record-
ing is made Engine speed signal ENGINE SPEED SIGIEngine RPM is abnormally low during traveling.
Line pressure
solenoid valveLINE PRESSURE S/VISpecified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
TCM (ROM) CONTROL UNIT (ROM)ITCM memory (ROM) is malfunctioning.
TCM (RAM) CONTROL UNIT (RAM)ITCM memory (RAM) is malfunctioning.
SAT014K
SAT987J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-14

SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II)
DIAGNOSIS START
1. Start engine and warm it up to normal
engine operating temperature.
2. Turn ignition switch to ªOFFº position.
Wait at least 5 seconds.
1. Set A/T mode switch to ªAUTOº posi-
tion.
2. Set overdrive control switch in ªONº
position.
3. Move selector lever to ªPº position.
4. Turn ignition switch to ªONº position.
(Do not start engine.)
5. Does SPORT indicator lamp come on
for about 2 seconds?
Ye s
ENo
Go to 1. SPORT Indicator
Lamp Does Not Come On,
AT-92.
1. Turn ignition switch to ªACCº position.
2. Move selector lever to ªDº position.
qA
NAT309
SAT879E
SAT244I
H
H
H
H
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Self-diagnosis (Cont'd)
AT-15