2003 NISSAN X-TRAIL brake fluid

AT-16
A/T FLUID

A/T FLUIDPFP:KLE40
Checking A/T FluidECS004Q7
1. Warm up engine.
2. Check for A/T fluid leakage.
3. Before driving, A/T fluid level can be checked at A/T fluid tem-
peratures of 30 to 50°C (86 to 122°F) using “COLD” range on A/
T fluid level gauge.
a. Park vehicle on level surface and set parking brake.
b. Start engine and move selector lever through each gear posi-
tion. Leave selector lever in “P” position.
c. Check A/T fluid level with engine idling.
d. Remove A/T fluid level gauge and note reading. If level is at low
side of either range, and A/T fluid to the A/T fluid charging pipe.
CAUTION:
When wiping away the A/T fluid level gauge, always use
lint-free paper, not a cloth one.
e. Re-insert A/T fluid level gauge into A/T fluid charging pipe as far
as it will go.
CAUTION:
Firmly fix the A/T fluid level gauge to the A/T fluid charging
pipe using a stopper attached.
f. Remove A/T fluid level gauge and note reading. If reading is at
low side of range, add A/T fluid to the A/T fluid charging pipe.
CAUTION:
Do not overfill.
4. Drive vehicle for approximately 5 minutes in urban areas.
5. Recheck A/T fluid level at A/T fluid temperatures of 50 to 80°C (122 to 176°F) using “HOT” range on A/T
fluid level gauge.
CAUTION:

When wiping away the A/T fluid level gauge, always use lint-free paper, not a cloth one.

Firmly fix the A/T fluid level gauge to the A/T fluid charging pipe using a stopper attached.
SMA146B
SMA827CA
SMA051D

OVERALL SYSTEM
AT-31
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TCM FunctionECS004QE
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 transaxle senses vehicle operating conditions through various switches and sensors. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM
SWITCHES & SENSORS

TCM

ACTUATORS
PNP switch
Accelerator pedal position (APP)
sensor
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed sensor
Overdrive control switch signal
Stop lamp switch signalShift control
Line pressure control
Lock-up control
Overrun clutch control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
control
CAN systemShift solenoid valve A
Shift solenoid valve B
Overrun clutch solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
O/D OFF indicator lamp
SCIA4505E

AT-34
OVERALL SYSTEM

Input/Output Signal of TCMECS00CTC
*1: Spare for vehicle speed sensor·A/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: Used as a condition for starting self-diagnostics; if self-diagnostics are not started, it is judged that there is some kind of error.
*5: Input by CAN communications.
*6: Output by CAN communications.
Line Pressure ControlECS004QF

TCM has various line pressure control characteristics to match the driving conditions.

An ON-OFF duty signal is sent to the line pressure solenoid valve based on TCM characteristics.

Hydraulic pressure on the clutch and brake is electronically controlled through the line pressure solenoid
valve to accommodate engine torque. This results in smooth shift operation.
NORMAL CONTROL
The line pressure to throttle opening characteristics is set for suitable
clutch operation.
Control itemLine
pressure
controlVehicle
speed
controlShift
controlLock-up
controlEngine
brake
controlFail-safe
function
(*3)Self-diag-
nostics
function
InputAccelerator pedal position signalXXXXXXX
Vehicle speed sensor A/T
(Revolution sensor)XXXX XX
Vehicle speed sensor MTR
(*1)XXXX X
Closed throttle position signal
(*5)(*2) X (*2) X X (*4) X
Wide open throttle position signal
(*5)(*2) X (*2) X (*4) X
Engine speed signal X X
PNP switch XXXXXX(*4) X
Stop lamp switch signal
(*5)XXX(*4) X
A/T fluid temperature sensors X X X X X
TCM power supply voltage signal XX
Out-
putShift solenoid valve A/B X X X
Line pressure solenoid X X X
Torque converter clutch solenoid
valveXXX
Overrun clutch solenoid valve X X X X
O/D OFF indicator lamp
(*6)X
SAT003J

OVERALL SYSTEM
AT-35
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BACK-UP CONTROL (ENGINE BRAKE)
If the selector lever is shifted to “2” position while driving in D4 (OD)
or D
3 , great driving force is applied to the clutch inside the transmis-
sion. Clutch operating pressure (line pressure) must be increased to
deal with this driving force.
DURING SHIFT CHANGE
The line pressure is temporarily reduced corresponding to a change
in engine torque when shifting gears (that is, when the shift solenoid
valve is switched for clutch operation) to reduce shifting shock.
AT LOW FLUID TEMPERATURE

Fluid viscosity and frictional characteristics of the clutch facing change with fluid temperature. Clutch
engaging or band-contacting pressure is compensated for, according to fluid temperature, to stabilize
shifting quality.

The line pressure is reduced below 60°C (140°F) to prevent
shifting shock due to low viscosity of automatic transmission
fluid when temperature is low.

Line pressure is increased to a maximum irrespective of the
throttle opening when fluid temperature drops to −10°C (14°F).
This pressure rise is adopted to prevent a delay in clutch and
brake operation due to extreme drop of fluid viscosity at low
temperature.
Shift ControlECS00CTD
The shift is regulated entirely by electronic control to accommodate vehicle speed and varying engine opera-
tions. This is accomplished by electrical signals transmitted by the revolution sensor and the ECM (accelerator
pedal position sensor). This results in improved acceleration performance and fuel economy.
SAT004J
SAT005J
SAT006J
SAT007J

AT-46
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

*1: These malfunctions cannot be displayed by MIL if another malfunction is assigned to lamp MIL.
DATA MONITOR MODE (A/T)
X: Standard, —: Not applicable, : Option CONT UNIT(EEP ROM)

TCM memory (EEP ROM) is malfunctioning. —
PNP SW/CIRC

TCM does not receive the correct voltage signal (based on the gear
position) from the switch.P0705
INITIAL START

This is not a malfunction message (Whenever shutting off a power sup-
ply to the TCM, this message appears on the screen).—
No failure
(NO SELF DIAGNOSTIC FAILURE
INDICATED FURTHER TESTING
MAY BE REQUIRED)

No failure has been detected. — Items (CONSULT-II screen terms) Malfunction is detected when... EURO-OBD (DTC)
Monitor item (Unit)SELECT MONITOR ITEM
Remarks
TCM INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU
VHCL/S SE·A/T (km/h) X — Revolution sensor
VHCL/S SE·MTR (km/h) X —Vehicle speed display may not be accu-
rate under approx. 10 km/h (6 mph). It
may not indicate 0 km/h (0 mph) when
vehicle is stationary.
THRTL POS SEN (V) X —
FLUID TEMP SE (V) X —
BATTERY VOLT (V) X —
ENGINE SPEED (rpm) X X
TURBINE REV (rpm) X —
OVERDRIVE SW (ON/OFF) X —
PN POSI SW (ON/OFF) X —
R POSITION SW (ON/OFF) X —
D POSITION SW (ON/OFF) X —
2 POSITION SW (ON/OFF) X —
1 POSITION SW (ON/OFF) X —
ASCD·CRUISE (ON/OFF) X —
Signal input with CAN communication.
ACC OD CUT (ON/OFF) X —
KICKDOWN SW (ON/OFF) X —
Not mounted but displayed.
POWERSHIFT SW (ON/OFF) X —
CLOSED THL/SW (ON/OFF) X —
Signal input with CAN communication.
W/O THRL/P-SW (ON/OFF) X —
*SHIFT S/V A (ON/OFF) — —
Displays status of check signal (reinput
signal) for TCM control signal output.
Remains unchanged when solenoid
valves are open or shorted. *SHIFT S/V B (ON/OFF) — —
*OVERRUN/C S/V (ON/OFF) — —
HOLD SW (ON/OFF) X — Not mounted but displayed.
BRAKE SW (ON/OFF) X — Stop lamp switch

TROUBLE DIAGNOSIS — INTRODUCTION
AT-59
[EURO-OBD]
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Diagnostic Worksheet
1.❏ Read the Fail-safe and listen to customer complaints.AT- 5 8
2.❏ Check A/T fluidAT- 6 4
❏ Leakage (Follow specified procedure)
❏ Fluid condition
❏ Fluid level
3.❏ Perform Stall Test and Line Pressure Test.AT- 6 5
, AT- 6 8
❏ Stall test — Mark possible damaged components/others.
❏ Torque converter one-way clutch
❏ Reverse clutch
❏ Forward clutch
❏ Overrun clutch
❏ Forward one-way clutch❏ Low & reverse brake
❏ Low one-way clutch
❏ Engine
❏ Line pressure is low
❏ Clutches and brakes except high clutch and
brake band are OK
❏ Line Pressure test — Suspected parts:
4.❏ Perform all Road Test and mark required procedures.AT- 7 0
4-1. Check before engine is started.AT- 7 1
❏ O/D OFF Indicator Lamp Does Not Come On, AT-204 .
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE. — Mark detected items.
❏ PNP switch, AT- 1 0 0
.
❏ A/T fluid temperature sensor, AT- 1 0 6
.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 11 2
.
❏ Engine speed signal, AT- 11 9
.
❏ Torque converter clutch solenoid valve, AT-148
.
❏ Line pressure solenoid valve, AT-154
.
❏ Shift solenoid valve A, AT- 1 6 1
.
❏ Shift solenoid valve B, AT- 1 6 7
.
❏ Accelerator pedal position (App) sensor, AT- 1 7 3
.
❏ Overrun clutch solenoid valve, AT- 1 7 8
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 2 3 7
.
❏ Batt/fluid temp sen (A/T fluid temperature sensor and TCM power source), AT- 1 8 4
.
❏ Vehicle speed sensor·MTR, AT-192
.
❏ CAN communication line, AT- 9 7
.
❏ Control unit (RAM), control unit (ROM), AT-198
.
❏ Control unit (EEP ROM), AT-200
.
❏ Battery
❏ Others
4-2. Check at idleAT- 7 2
❏ Engine Cannot Be Started In “P” And “N” Position, AT-206 .
❏ In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT-207
.
❏ In “N” Position, Vehicle Moves, AT- 2 0 8
.
❏ Large Shock. “N” → “R” Position, AT-209
.
❏ Vehicle Does Not Creep Backward In “R” Position, AT-210
.
❏ Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT- 2 1 2
.

AT-60
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION

4. 4-3. Cruise testAT- 7 4
AT- 7 8Part-1
❏ Vehicle Cannot Be Started From D
1 , AT-214 .
❏ A/T Does Not Shift: D
1 → D2 Or Does Not Kickdown: D4 → D2 , AT- 2 1 7 .
❏ A/T Does Not Shift: D
2 → D3 , AT-220 .
❏ A/T Does Not Shift: D
3 → D4 , AT-222 .
❏ A/T Does Not Perform Lock-up, AT- 2 2 4
.
❏ A/T Does Not Hold Lock-up Condition, AT- 2 2 5
.
❏ Lock-up Is Not Released, AT- 2 2 7
.
❏ Engine Speed Does Not Return To Idle (Light Braking D
4 → D3 ), AT- 2 2 8 .
Part-2AT- 8 1
❏ Vehicle Does Not Start From D1 , AT-230 .
❏ A/T Does Not Shift: D
1 → D2 Or Does Not Kickdown: D4 → D2 , AT- 2 1 7 .
❏ A/T Does Not Shift: D
2 → D3 , AT-220 .
❏ A/T Does Not Shift: D
3 → D4 , AT-222 .
Part-3AT- 8 2
❏ A/T Does Not Shift: D4 → D3 When Overdrive Control Switch “ON” → “OFF”, AT- 2 3 1 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In D
3 ), AT-228 .
❏ A/T Does Not Shift: D
3 → 22 , When Selector Lever “D” → “2” Position, AT-232 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In 2
2 ), AT- 2 2 8 .
❏ A/T Does Not Shift: 2
2 → 11 , When Selector Lever “2” → “1” Position, AT- 2 3 3 .
❏ Vehicle Does Not Decelerate By Engine Brake, AT-235
.
❏ TCM Self-diagnosis Does Not Activate (PNP & Overdrive control switches, and throttle position sensor
circuit checks), AT-237
.
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE — Mark detected items.
❏ PNP switch, AT-100
.
❏ A/T fluid temperature sensor, AT-106
.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 11 2
.
❏ Engine speed signal, AT- 11 9
.
❏ Torque converter clutch solenoid valve, AT- 1 4 8
.
❏ Line pressure solenoid valve, AT-154
.
❏ Shift solenoid valve A, AT-161
.
❏ Shift solenoid valve B, AT-167
.
❏ Accelerator pedal position (App) sensor, AT-173
.
❏ Overrun clutch solenoid valve, AT-178
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 2 3 7
.
❏ A/T fluid temperature sensor and TCM power source, AT-184
.
❏ Vehicle speed sensor·MTR, AT- 1 9 2
.
❏ CAN communication line, AT- 9 7
.
❏ Control unit (RAM), control unit (ROM), AT- 1 9 8
.
❏ Control unit (EEP ROM), AT- 2 0 0
.
❏ Battery
❏ Others
5.❏ For self-diagnosis NG items, inspect each component. Repair or replace the damaged parts.AT- 5 2
6.❏ Perform all Road Test and re-mark required procedures.AT- 7 0
7.❏ Perform DTC Confirmation Procedure for following MILL indicating items and check out NG items.EC-52
❏ DTC (P0731) A/T 1st gear function, AT-125 .
❏ DTC (P0732) A/T 2nd gear function, AT- 1 3 0
.
❏ DTC (P0733) A/T 3rd gear function, AT-135
.
❏ DTC (P0734) A/T 4th gear function, AT-140
.
8.❏ Perform 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- 8 5
9.❏ Erase DTC from TCM and ECM memories.AT- 4 2

AT-64
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION

TROUBLE DIAGNOSIS — BASIC INSPECTIONPFP:00000
A/T Fluid CheckECS004QQ
FLUID LEAKAGE CHECK
1. Clean area suspected of leaking. — for example, mating surface
of converter housing and transmission case.
2. Start engine, apply foot brake, place selector lever in D position
and wait a few minutes.
3. Stop engine.
4. Check for fresh leakage.
FLUID CONDITION CHECK
FLUID LEVEL CHECK
Refer to AT- 1 6 , "Checking A/T Fluid" .
SAT767B
SAT288G
Fluid color Suspected problem
Dark or black with burned odor Wear of frictional material
Milky pink Water contamination — Road water
entering through filler tube or breather
Varnished fluid, light to dark brown and
tackyOxidation — Over or under filling, —
Overheating
SAT638A