2004 NISSAN TERRANO check engine

AUTOMATIC TRANSMISSIONSECTION
AT
CONTENTS
PREPARATION AND PRECAUTIONS ............................3
Special Service Tools ..................................................3
Supplemental Restraint System (SRS) ²AIR
BAG² and²SEAT BELT PRE-TENSIONER² ...............4
Precautions for SRS ²AIR BAG² and²SEAT
BELT PRE-TENSIONER² Service ...............................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 POWER SUPPLY ..........49
Wiring Diagram - AT - MAIN ......................................49
TCM Power Supply Circuit ........................................50
TROUBLE DIAGNOSIS FOR VHCL SPEED
SEN×A/T ........................................................................\
.51
Wiring Diagram - AT - VSSA/T ..................................51
Vehicle Speed Sensor×A/T (Revolution sensor) ........52 TROUBLE DIAGNOSIS FOR VHCL SPEED
SEN×MTR
.......................................................................54
Wiring Diagram - AT - VSSMTR ................................54
Vehicle Speed Sensor×MTR ......................................56
TROUBLE DIAGNOSIS FOR THROTTLE POSI
SEN ........................................................................\
........58
Wiring Diagram - AT - TPS ........................................58
Throttle (Accelerator) Position Sensor ......................62
TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V
A ........................................................................\
.............64
Wiring Diagram - AT - SSV/A ....................................64
Shift Solenoid Valve A ...............................................65
TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V
B ........................................................................\
.............67
Wiring Diagram - AT - SSV/B ....................................67
Shift Solenoid Valve B ...............................................68
TROUBLE DIAGNOSIS FOR OVERRUN CLUTCH
S/V ........................................................................\
..........70
Wiring Diagram - AT - OVRCSV................................70
Overrun Clutch Solenoid Valve .................................71
TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V .....73
Wiring Diagram - AT - TCV........................................73
Torque Converter Clutch Solenoid Valve ..................74
TROUBLE DIAGNOSIS FOR BATT/FLUID TEMP
SEN ........................................................................\
........77
Wiring Diagram - AT - BA/FTS ..................................77
A/T Fluid Temperature Sensor and TCM Power
Source........................................................................\
78
TROUBLE DIAGNOSIS FOR ENGINE SPEED SIG ....81
Wiring Diagram - AT - ENGSS ..................................81
Engine Speed Signal .................................................82
TROUBLE DIAGNOSIS FOR LINE PRESSURE
S/V ........................................................................\
..........84
Wiring Diagram - AT - LPSV......................................84
Line Pressure Solenoid Valve ...................................86
TROUBLE DIAGNOSIS FOR NON-DETECTABLE
ITEMS........................................................................\
.....89 Wiring Diagram - AT - PNP/SW.................................89
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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 DescriptionRemarks
No failure ****NO FAILURE
****I
No failure has been detected.
Initial start *INITIAL START
*I
This 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/T I
No 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×MTR I
No signal input from vehicle speed sensor×MTR during
traveling due to disconnection, or input of abnormal signal.
Throttle (accelerator)
position sensor THROTTLE POSI SEN I
Throttle (accelerator) position sensor signal voltage is
abnormally high.
I Throttle (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 A I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
Shift solenoid valve B SHIFT SOLENOID/V B I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
Overrun clutch
solenoid valve OVERRUN CLUTCH S/V I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
T/C clutch solenoid
valve T/C CLUTCH SOL/V I
Specified voltage is not applied to solenoid valve due to
disconnection or shortcircuit.
A/T fluid temperature
sensor/TCM power
source BATT/FLUID TEMP SEN I
Supply voltage to TCM is abnormally low during traveling.
I Fluid 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 SIG
IEngine RPM is abnormally low during traveling.
Line pressure
solenoid valve LINE PRESSURE S/V I
Specified 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
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qA
1. Set overdrive control switch in ªOFFºposition.
2. Depress accelerator pedal fully and release it.
3. Turn ignition switch ªONº. (Do not start engine.)
1. Move selector lever to ª2º position.
2. Set overdrive control switch in ªONº position.
1. Move selector lever to ª1º position.
2. Set overdrive control switch in ªOFFº position.
Depress accelerator pedal fully and
release it.
Check SPORT indicator lamp.
Refer to JUDGEMENT OF SELF-
DIAGNOSIS CODE, AT-17.
DIAGNOSIS END
SAT881E
FAT245I
SAT246I
SAT981F
NAT309
H
H
H
H
H
H
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Self-diagnosis (Cont'd)
AT-16
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Diagnosis by CONSULT-II
NOTICE
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of eachsolenoid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Manual may differ slightly. This occurs because of the following reasons:
IActual shift schedule has more or less tolerance or allowance,
I Shift schedule indicated in Service Manual refers to the point where shifts start. Gear position displayed
on CONSULT-II indicates the point where shifts are completed.
3. Shift solenoid valve ªAº or ªBº is displayed on CONSULT-II at the start of shifting. Gear position is displayed upon completion of shifting (which is computed by TCM).
4. Additional CONSULT-II information can be found in the Operation Manual supplied with the CONSULT-II unit.
SELF-DIAGNOSTIC RESULT TEST MODE
Refer to AT-14.
DATA MONITOR DIAGNOSTIC TEST MODE
Item DisplayMonitor item
Description Remarks
ECU
input
signals Main
signals
Vehicle speed sensor 1
(A/T)
(Revolution sensor) VHCL/S SE×A/T
[km/h] or [mph]
XÐI
Vehicle speed computed from signal
of revolution sensor is displayed. When racing engine in ªNº or ªPº posi-
tion with vehicle stationary, CON-
SULT-II data may not indicate
0 km/h (0 MPH).
Vehicle speed sensor 2
(Meter) VHCL/S SE×MTR
[km/h] or [mph]
XÐI
Vehicle speed computed from signal
of vehicle speed sensor is dis-
played. Vehicle speed display may not be
accurate under approx. 10 km/h
(6 MPH). It may not indicate 0 km/h (0
MPH) when vehicle is stationary.
Throttle (accelerator)
position sensor THRTL POS SEN
[V]
XÐI
Throttle (accelerator) position sen-
sor signal voltage is displayed.
A/T fluid temperature
sensor FLUID TEMP SE
[V]
XÐI
A/T fluid temperature sensor signal
voltage is displayed.
I Signal voltage lowers as fluid tem-
perature rises.
Battery voltage BATTERY VOLT [V]XÐI
Source voltage of TCM is displayed.
Engine speed ENGINE SPEED [rpm]XXI
Engine speed, computed from
engine speed signal, is displayed. Engine speed display may not be
accurate under approx. 800 rpm. It
may not indicate 0 rpm even when
engine is not running.
Overdrive control switch OVERDRIVE SW [ON/OFF]XÐI
ON/OFF state computed from signal
of overdrive control SW is displayed.
P/N position switch P/N POSI SW [ON/OFF]XÐI
ON/OFF state computed from signal
of P/N position SW is displayed.
R position switch R POSITION SW [ON/OFF]XÐI
ON/OFF state computed from signal
of R position SW is displayed.
D position switch D POSITION SW [ON/OFF]XÐI
ON/OFF state computed from signal
of D position SW is displayed.
2 position switch 2 POSITION SW [ON/OFF]XÐI
ON/OFF status, computed from sig-
nal of 2 position SW, is displayed.
1 position switch 1 POSITION SW [ON/OFF]XÐI
ON/OFF status, computed from sig-
nal of 1 position SW, is displayed.
ASCD-cruise signal ASCD×CRUISE [ON/OFF]XÐI
Status of ASCD cruise signal is dis-
played.
ON ... Cruising state
OFF ... Normal running state I
This is displayed even when no
ASCD is mounted.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
AT-20
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Introduction
The TCM receives a signal from the vehicle-speed sensor, throttle
(accelerator) position sensor or park/neutral position switch and
provides shift control or lock-up control via solenoid valves.
Input and output signals must always be correct and stable in the
operation of the A/T system. The A/T system must be in good
operating condition and be free of valve seizure, solenoid valve
malfunction, etc.
It is much more difficult to diagnose an incident that occurs inter-
mittently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this
case, careful checking of suspected circuits may help prevent the
replacement of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow the ªWork Flowº. Refer to AT-26.
Before undertaking actual checks, take a few minutes to talk with
a customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A ªDiagnostic Worksheetº like the
example (AT-24) should be used.
Start your diagnosis by looking for ªconventionalº incidents first.
This will help troubleshoot driveability incidents on an electronically
controlled engine vehicle.
SAT631IA
SAT632I
SEF234G
TROUBLE DIAGNOSIS Ð Introduction
AT-22
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DIAGNOSTIC WORKSHEET
1.lRead the Fail-safe and listen to customer complaints. AT-5
2. lA/T FLUID CHECK AT-27
l Leakage (Follow specified procedure)
l Fluid condition
l Fluid level
3. lPerform STALL TEST and LINE PRESSURE TEST. AT-27,
AT-30
l Stall test Ð Mark possible damaged components/others.
l Torque converter one-way clutch
l Reverse clutch
l Forward clutch
l Overrun clutch
l Forward one-way clutch l
Low & reverse brake
l Low one-way clutch
l Engine
l Line pressure is low
l Clutches and brakes except high
clutch and brake band are OK
l Line pressure test Ð Suspected parts:
4. lPerform all ROAD TEST and mark required procedures. AT-32
4-1. Check before engine is started. AT-33 l SELF-DIAGNOSTIC PROCEDURE Ð Mark detected items.
l Vehicle speed sensor×A/T (Revolution sensor), AT-52.
l Vehicle speed sensor×MTR, AT-56.
l Throttle (accelerator) position sensor, AT-62.
l Shift solenoid valve A, AT-65.
l Shift solenoid valve B, AT-68.
l Overrun clutch solenoid valve, AT-71.
l Torque converter clutch solenoid valve, AT-93.
l A/T fluid temperature sensor and TCM power source, AT-78.
l Engine speed signal, AT-82.
l Line pressure solenoid valve, AT-86.
l Park/neutral position, overdrive control, A/T check and throttle
(accelerator) position switches, AT-93.
l Battery
l Others
4-2. Check at idle AT-35 l 1. SPORT Indicator Lamp Does Not Come On, AT-97.
l 2. SPORT or SNOW Indicator Lamp Does Not Come On, AT-100.
l 3. O/D OFF Indicator Lamp Does Not Come On, AT-100.
l 4. SPORT Indicator Lamp Does Not Come On, AT-101.
l 5. Engine Cannot Be Started In ªPº And ªNº Position, AT-102.
l 6. In ªPº Position, Vehicle Moves Forward Or Backward When Pushed,
AT-102.
l 7. In ªNº Position, Vehicle Moves, AT-103.
l 8. Large Shock. ªNº ,ªRº Position, AT-104.
l 9. Vehicle Does Not Creep Backward In ªRº Position, AT-105.
l 10. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Position, AT-106.
4-3. Cruise test AT-36,
AT-39
Part-1
l 11. Vehicle Cannot Be Started From D
1, AT-107.
l 12. A/T Does Not Shift: D
1,D2Or Does Not Kickdown: D4,D2, AT-108.
l 13. A/T Does Not Shift: D
2,D3, AT-109.
l 14. A/T Does Not Shift: D
3,D4, AT-110.
l 15. A/T Does Not Perform Lock-up, AT-111.
l 16. A/T Does Not Hold Lock-up Condition, AT-112.
l 17. Lock-up Is Not Released, AT-112.
l 18. Engine Speed Does Not Return To Idle (Light Braking D
4,D3), AT-113.
TROUBLE DIAGNOSIS Ð Introduction
Diagnostic Worksheet (Cont'd)
AT-24
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4. Part-2l19. Vehicle Does Not Start From D
1, AT-114.
l 12. A/T Does Not Shift: D
1,D2Or Does Not Kickdown: D4,D2, AT-108.
l 13. A/T Does Not Shift: D
2,D3, AT-109.
l 14. A/T Does Not Shift: D
3,D4, AT-110. AT-41
Part-3
l 20. A/T Does Not Shift: D
2,D1When Depressing Accelerator Pedal, AT-5.
l 21. A/T Does Not Shift: D
4,D3When Overdrive Control Switch ªONº ,
ªOFFº, AT-116.
l 18. Engine Speed Does Not Return To Idle (Engine Brake In D
3), AT-113.
l 22. A/T Does Not Shift: D
3,22, When Selector Lever ªDº ,ª2º Position,
AT-116.
l 18. Engine Speed Does Not Return To Idle (Engine Brake In 2
2), AT-113.
l 23. A/T Does Not Shift: 2
2,11, When Selector Lever ª2º ,ª1º Position,
AT-5.
l 24. Vehicle Does Not Decelerate By Engine Brake, AT-117.
l SELF-DIAGNOSTIC PROCEDURE Ð Mark detected items. AT-42
l Vehicle speed sensor×A/T (Revolution sensor), AT-52.
l Vehicle speed sensor×MTR, AT-56.
l Throttle (accelerator) position sensor, AT-62.
l Shift solenoid valve A, AT-65.
l Shift solenoid valve B, AT-68.
l Overrun clutch solenoid valve, AT-71.
l Torque converter clutch solenoid valve, AT-71.
l A/T fluid temperature sensor and TCM power source, AT-78.
l Engine speed signal, AT-82.
l Line pressure solenoid valve, AT-86.
l Park/neutral position, overdrive control, A/T check and throttle
(accelerator) position switches, AT-93.
l Battery
l Others
5. lFor self-diagnosis NG items, inspect each component. Repair or replace the
damaged parts. AT-14
6. lPerform all ROAD TEST and re-mark required procedures. AT-32
7. lPerform the Diagnostic Procedures for all remaining items marked NG. Repair or
replace the damaged parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also
shows some other possible symptoms and the component inspection orders.) AT-46
AT-43
8. lErase self-diagnosis code from TCM memories. AT-19
TROUBLE DIAGNOSIS Ð Introduction
Diagnostic Worksheet (Cont'd)
AT-25
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A/T Fluid Check
FLUID LEAKAGE CHECK
1. Clean area suspected of leaking. Ð for example, mating sur-face of converter housing and transmission case.
2. Start engine, apply foot brake, place selector lever in ªDº posi- tion and wait a few minutes.
3. Stop engine.
4. Check for fresh leakage.
FLUID CONDITION CHECK
Fluid color Suspected cause
Dark or black with burned odor Wear of frictional material
Milky pink Water contamination Ð Road water enter-
ing through filler tube or breather
Varnished fluid, light to dark
brown and tacky Oxidation Ð Over or under filling, Ð Over-
heating
FLUID LEVEL CHECK
Refer to MA section (ªChecking A/T Fluidº, ªCHASSIS AND BODY
MAINTENANCEº).
Stall Test
STALL TEST PROCEDURE
1. Check A/T and engine fluid levels. If necessary, add.
2. Drive vehicle for approx. 10 minutes or until engine oil and ATF
reach operating temperature.ATF operating temperature: 50 - 80ÉC (122 - 176ÉF)
3. Set parking brake and block wheels.
4. Install a tachometer where it can be seen by driver during test.
I It is good practice to put a mark on point of specified
engine rpm on indicator.
5. Start engine, apply foot brake, and place selector lever in ªDº position.
6. Accelerate to wide open throttle gradually while applying foot brake.
7. Quickly note the engine stall revolution and immediately release throttle.
I During test, never hold throttle wide open for more than 5
seconds.
Stall revolution: 2,450 - 2,700 rpm
SAT801A
SAT638A
SAT647B
SAT513G
SAT514G
TROUBLE DIAGNOSIS Ð Basic Inspection
AT-27
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