2001 NISSAN X-TRAIL Line pressure

AT-58
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
Diagnostic Worksheet
1.❏ Read the Fail-safe and listen to customer complaints.AT-57, "Infor-
mation from
Customer"
2.❏ CHECK A/T FLUIDAT-63, "A/T
Fluid Check"❏ Leakage (Follow specified procedure)
❏ Fluid condition
❏ Fluid level
3.❏ Perform STALL TEST and LINE PRESSURE TEST.AT-64, "
Stall
Te s t",AT- 6 7 ,
"Line Pres-
sure Test"
❏ 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-68, "
Road
Te s t"
4-1. Check before engine is started.AT-70, "1.
CHECK
BEFORE
ENGINE IS
STARTED"
❏ O/D OFF Indicator Lamp Does Not Come On, AT-209, "O/D OFF Indicator Lamp Does Not Come On" .
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE. — Mark detected items.
❏ PNP switch, AT-110, "
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH" .
❏ A/T fluid temperature sensor, AT-116, "
DTC P0710 A/T FLUID TEMPERATURE SENSOR CIR-
CUIT" .
❏ Vehicle speed sensor·A/T (Revolution sensor), AT-122, "
DTC P0720 VEHICLE SPEED SEN-
SOR·A/T (REVOLUTION SENSOR)" .
❏ Engine speed signal, AT-127, "
DTC P0725 ENGINE SPEED SIGNAL" .
❏ Torque converter clutch solenoid valve, AT-158, "
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE" .
❏ Line pressure solenoid valve, AT-163, "
DTC P0745 LINE PRESSURE SOLENOID VALVE" .
❏ Shift solenoid valve A, AT-170, "
DTC P0750 SHIFT SOLENOID VALVE A" .
❏ Shift solenoid valve B, AT-175, "
DTC P0755 SHIFT SOLENOID VALVE B" .
❏ Accelerator pedal position (App) sensor, AT- 1 8 0 , "
DTC P1705 ACCELERATOR PEDAL POSITION
(APP) SENSOR" .
❏ Overrun clutch solenoid valve, AT-185, "
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE" .
❏ PNP & overdrive control switches, and throttle position sensor, AT- 2 4 1 , "
TCM Self-diagnosis Does
Not Activate" .
❏ Batt/fluid temp sen (A/T fluid temperature sensor and TCM power source), AT-193, "
DTC BATT/
FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)" .
❏ Vehicle speed sensor·MTR, AT-199, "
DTC VEHICLE SPEED SENSOR MTR" .
❏ CAN communication line, AT-190, "
DTC U1000 CAN COMMUNICATION LINE" .
❏ Control unit (RAM), control unit (ROM), AT- 2 0 3 , "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)" .
❏ Control unit (EEP ROM), AT- 2 0 5 , "
DTC CONTROL UNIT(EEPROM)" .
❏ Battery
❏ Others
4-2. Check at idleAT-71, "
2.
CHECK AT
IDLE"❏ Engine Cannot Be Started In “P” And “N” Position, AT- 2 11 , "Engine Cannot Be Started In “P” and “N”
Position" .
❏ In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT-212, "
In “P” Position, Vehicle
Moves Forward Or Backward When Pushed" .
❏ In “N” Position, Vehicle Moves, AT-213, "
In “N” Position, Vehicle Moves" .
❏ Large Shock. “N” → “R” Position, AT-214, "
Large Shock. “N”→“R” Position" .
❏ Vehicle Does Not Creep Backward In “R” Position, AT-215, "
Vehicle Does Not Creep Backward In “R”
Position" .
❏ Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT- 2 1 8 , "
Vehicle Does Not Creep Forward
In “D”,“2” Or “1” Position" .

TROUBLE DIAGNOSIS — INTRODUCTION
AT-59
[EURO-OBD]
D
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AT
4. 4-3. Cruise testAT- 7 4 , "3.
CRUISE
TEST"
AT- 7 8 ,
"Cruise Test
— Part 1"
Part-1
❏ Vehicle Cannot Be Started From D
1 , AT- 2 2 0 , "Vehicle Cannot Be Started From D1" .
❏ A/T Does Not Shift: D
1→ D2 Or Does Not Kickdown: D4→ D2 , AT-223, "A/T Does Not Shift: D1→
D2 Or Does Not Kickdown: D4→ D2" .
❏ A/T Does Not Shift: D
2→ D3 , AT- 2 2 5 , "A/T Does Not Shift: D2→ D3" .
❏ A/T Does Not Shift: D
3→ D4 , AT- 2 2 7 , "A/T Does Not Shift: D3→ D4" .
❏ A/T Does Not Perform Lock-up, AT-229, "
A/T Does Not Perform Lock-up" .
❏ A/T Does Not Hold Lock-up Condition, AT-230, "
A/T Does Not Hold Lock-up Condition" .
❏ Lock-up Is Not Released, AT-232, "
Lock-up Is Not Released" .
❏ Engine Speed Does Not Return To Idle (Light Braking D
4→ D3 ), AT-233, "Engine Speed Does Not
Return To Idle (Light Braking D4→ D3 )" .
Part-2AT- 8 1 ,
"Cruise Test
— Part 2"❏ Vehicle Does Not Start From D1 , AT- 2 3 4 , "Vehicle Does Not Start From D1" .
❏ A/T Does Not Shift: D
1→ D2 Or Does Not Kickdown: D4→ D2 , AT-223, "A/T Does Not Shift: D1→
D2 Or Does Not Kickdown: D4→ D2" .
❏ A/T Does Not Shift: D
2→ D3 , AT- 2 2 5 , "A/T Does Not Shift: D2→ D3" .
❏ A/T Does Not Shift: D
3→ D4 , AT- 2 2 7 , "A/T Does Not Shift: D3→ D4" .
Part-3AT- 8 3 ,
"Cruise Test
— Part 3"❏ A/T Does Not Shift: D4→ D3 When Overdrive Control Switch “ON” → “OFF”, AT-236, "A/T Does Not
Shift: D4→ D3 , When Overdrive Control Switch “ON”→“OFF”" .
❏ Engine Speed Does Not Return To Idle (Engine Brake In D
3 ), AT-233, "Engine Speed Does Not Return
To Idle (Light Braking D4→ D3 )" .
❏ A/T Does Not Shift: D
3→ 22 , When Selector Lever “D” → “2” Position, AT- 2 3 7 , "A/T Does Not Shift:
D3→ 22 , When Selector Lever “D”→“2” Position" .
❏ Engine Speed Does Not Return To Idle (Engine Brake In 2
2 ), AT- 2 3 3 , "Engine Speed Does Not Return
To Idle (Light Braking D4→ D3 )" .
❏ A/T Does Not Shift: 2
2→ 11 , When Selector Lever “2” → “1” Position, AT-238, "A/T Does Not Shift: 22
→ 11 , When Selector Lever “2”→“1” Position" .
❏ Vehicle Does Not Decelerate By Engine Brake, AT- 2 4 0 , "
Vehicle Does Not Decelerate By Engine
Brake" .
❏ TCM Self-diagnosis Does Not Activate (PNP & Overdrive control switches, and throttle position sensor
circuit checks), AT-241, "
TCM Self-diagnosis Does Not Activate" .
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE — Mark detected items.
❏ PNP switch, AT- 11 0 , "
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH" .
❏ A/T fluid temperature sensor, AT- 11 6 , "
DTC P0710 A/T FLUID TEMPERATURE SENSOR CIR-
CUIT" .
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 1 2 2 , "
DTC P0720 VEHICLE SPEED SEN-
SOR·A/T (REVOLUTION SENSOR)" .
❏ Engine speed signal, AT- 1 2 7 , "
DTC P0725 ENGINE SPEED SIGNAL" .
❏ Torque converter clutch solenoid valve, AT-158, "
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE" .
❏ Line pressure solenoid valve, AT-163, "
DTC P0745 LINE PRESSURE SOLENOID VALVE" .
❏ Shift solenoid valve A, AT- 1 7 0 , "
DTC P0750 SHIFT SOLENOID VALVE A" .
❏ Shift solenoid valve B, AT- 1 7 5 , "
DTC P0755 SHIFT SOLENOID VALVE B" .
❏ Accelerator pedal position (App) sensor, AT-180, "
DTC P1705 ACCELERATOR PEDAL POSITION
(APP) SENSOR" .
❏ Overrun clutch solenoid valve, AT- 1 8 5 , "
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE" .
❏ PNP & overdrive control switches, and throttle position sensor, AT-241, "
TCM Self-diagnosis Does
Not Activate" .
❏ A/T fluid temperature sensor and TCM power source, AT-193, "
DTC BATT/FLUID TEMP SEN (A/T
FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)" .
❏ Vehicle speed sensor·MTR, AT-199, "
DTC VEHICLE SPEED SENSOR MTR" .
❏ CAN communication line, AT- 1 9 0 , "
DTC U1000 CAN COMMUNICATION LINE" .
❏ Control unit (RAM), control unit (ROM), AT-203, "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)" .
❏ Control unit (EEP ROM), AT-205, "
DTC CONTROL UNIT(EEPROM)" .
❏ Battery
❏ Others

AT-62
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
*1:AT-57, "Information from Customer"*2:AT-58, "Diagnostic Worksheet"*3:AT- 7 , "Service Notice or Pre-
cautions"
*4:AT-63, "A/T Fluid Check"*5:AT-64, "Sta ll Tes t" and AT-67, "Line Pressure
Te s t"
*6:AT-68, "Road Test"
*7:AT-41, "CONSULT-II"*8:AT-37, "ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION"
*9:AT-50, "Diagnostic Procedure
Without CONSULT-II"
*10:AT- 11 0 , "DTC P0705 PARK/NEU-
TRAL POSITION (PNP) SWITCH"
*11:AT-199, "DTC VEHICLE SPEED SENSOR
MTR" and AT-203, "DTC CONTROL UNIT
(RAM), CONTROL UNIT (ROM)" t o AT-205,
"DTC CONTROL UNIT(EEPROM)"
*12:AT-209, "O/D OFF Indicator
Lamp Does Not Come On"
*13:AT-240, "Vehicle Does Not Deceler-
ate By Engine Brake"
*14:AT-86, "Symptom Chart"*15:AT-39, "HOW TO ERASE DTC"
*16:AT- 111 , "DIAGNOSTIC TROUBLE
CODE (DTC) CONFIRMATION
PROCEDURE"
*17:AT-199, "DTC VEHICLE SPEED SENSOR
MTR" and AT-203, "DTC CONTROL UNIT
(RAM), CONTROL UNIT (ROM)" t o AT-205,
"DTC CONTROL UNIT(EEPROM)"
*18: EC section

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-67
[EURO-OBD]
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AT
Line Pressure TestECS004QS
LINE PRESSURE TEST PORTS
Location of line pressure test ports are shown in the illustration.
●Always replace pressure plugs as they are self-sealing
bolts.
LINE PRESSURE TEST PROCEDURE
1. Check A/T fluid and engine oil levels. If necessary, add fluid or
oil.
2. Drive vehicle for approx. 10 minutes or until engine oil and AT F
reach operating temperature.
3. Install pressure gauge to corresponding line pressure port.
4. Set parking brake and block wheels.
●Continue to depress brake pedal fully while line pressure
test is being performed at stall speed.
SCIA0709E
ATF operating temperature: 50 - 80°C (122 -176°F)
SAT647B
UAT008
UAT008

AT-68
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
5. Start engine and measure line pressure at idle and stall speed.
●When measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer to AT- 5 2 1 , "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)" .
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS004QT
DESCRIPTION
●The purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
●The road test consists of the following three parts:
1. Check before engine is started
2. Check at idle
SAT493G
Judgement Suspected parts
At idleLine pressure is low in all positions.
●Oil pump wear
●Control piston damage
●Pressure regulator valve or plug sticking
●Spring for pressure regulator valve damaged
●Fluid pressure leakage between oil strainer and pressure regulator valve
●Clogged strainer
Line pressure is low in particular posi-
tion.
●Fluid pressure leakage between manual valve and particular clutch
●For example, line pressure is:
− Low in “R” and “1” positions, but
− Normal in “D” and “2” positions.
Therefore, fluid leakage exists at or around low and reverse brake circuit.
Refer to AT- 1 9 , "
CLUTCH AND BAND CHART" .
Line pressure is high.
●Maladjustment of throttle position sensor
●A/T fluid temperature sensor damaged
●Line pressure solenoid valve sticking
●Short circuit of line pressure solenoid valve circuit
●Pressure modifier valve sticking
●Pressure regulator valve or plug sticking
●Open in dropping resistor circuit
At stall
speedLine pressure is low.
●Maladjustment of throttle position sensor
●Line pressure solenoid valve sticking
●Short circuit of line pressure solenoid valve circuit
●Pressure regulator valve or plug sticking
●Pressure modifier valve sticking
●Pilot valve sticking
SAT786A

AT-86
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
PFP:00000
Symptom ChartECS004QU
Numbers are arranged in order of inspection.
Perform inspections starting with number one and work up.
Symptom Condition Diagnostic ItemReference Page
EURO-OBD
Engine cannot start in “P” and “N”
positions.
AT- 2 11 , "
Engine Cannot Be Started
In “P” and “N” Position"
ON vehicle1. Ignition switch and starterPG-2, "
POWER SUPPLY
ROUTING",SC-20,
"STARTING SYSTEM"
2. Control cable adjustmentAT-416, "Control Cable
Adjustment"
3. PNP switchAT- 11 0 , "
DTC P0705
PARK/NEUTRAL POSI-
TION (PNP) SWITCH"
Engine starts in position other than
“N” and “P” positions.
AT- 2 11 , "
Engine Cannot Be Started
In “P” and “N” Position"
ON vehicle1. Control cable adjustmentAT-416, "
Control Cable
Adjustment"
2. PNP switchAT- 11 0 , "
DTC P0705
PARK/NEUTRAL POSI-
TION (PNP) SWITCH"
Transaxle noise in “P” and “N” posi-
tions.ON vehicle1. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
2. Line pressure testAT- 6 7 , "Line Pressure Test"
3. Accelerator pedal position (APP) sensorAT-180, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT-122, "
DTC P0720 VEHI-
CLE SPEED SENSOR·A/T
(REVOLUTION SEN-
SOR)",
AT-199, "
DTC VEHICLE
SPEED SENSOR MTR"
OFF vehicle5. Oil pumpAT-444, "
Oil Pump"
6. Torque converterAT-425, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Vehicle moves when changing into
“P” position, or parking gear does
not disengage when shifted out of
“P” position.
AT- 2 1 2 , "
In “P” Position, Vehicle
Moves Forward Or Backward When
Pushed"
ON vehicle 1. Control cable adjustmentAT-416, "Control Cable
Adjustment"
OFF vehicle 2. Parking componentsAT-421, "
Components",AT-
441, "REPAIR FOR COM-
PONENT PARTS"
Vehicle runs in “N” position.
AT- 2 1 3 , "
In “N” Position, Vehicle
Moves"
ON vehicle 1. Control cable adjustmentAT-416, "Control Cable
Adjustment"
OFF vehicle2. Forward clutchAT-471, "
Forward and
Overrun Clutches"
3. Reverse clutchAT-463, "Reverse Clutch"
4. Overrun clutchAT-471, "Forward and
Overrun Clutches"

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-87
[EURO-OBD]
D
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AT
Vehicle will not run in “R” position
(but runs in “D”, “2” and “1” posi-
tions). Clutch slips.
Very poor acceleration.
AT-215, "
Vehicle Does Not Creep
Backward In “R” Position"
ON vehicle1. Control cable adjustmentAT-416, "
Control Cable
Adjustment"
2. Stall testAT-64, "Stall
Te s t"
3. Line pressure testAT-67, "Line Pressure Test"
4. Line pressure solenoid valveAT-163, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
5. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
Vehicle will not run in “R” position
(but runs in “D”, “2” and “1” posi-
tions). Clutch slips.
Very poor acceleration.
AT-215, "
Vehicle Does Not Creep
Backward In “R” Position"
OFF vehicle6. Reverse clutchAT-463, "
Reverse Clutch"
7. High clutchAT-466, "High Clutch"
8. Forward clutchAT-471, "Forward and
Overrun Clutches"
9. Overrun clutchAT-471, "Forward and
Overrun Clutches"
10. Low & reverse brakeAT-476, "Low & Reverse
Brake"
Vehicle braked when shifting into
“R” position.ON vehicle1. Fluid levelAT-63, "
A/T Fluid Check"
2. Line pressure testAT-67, "Line Pressure Test"
3. Line pressure solenoid valveAT-163, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
4. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle5. High clutchAT-466, "
High Clutch"
6. Brake bandAT-488, "Band Servo Pis-
ton Assembly"
7. Forward clutchAT-471, "Forward and
Overrun Clutches"
8. Overrun clutchAT-471, "Forward and
Overrun Clutches"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD

AT-88
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Sharp shock in shifting from “N” to
“D” position.ON vehicle1. Engine idling rpmEC-38
[QR25 (WITH
EURO-OBD)], EC-448
[QR25 (WITHOUT EURO-
OBD)], EC-771
[QR20
(WITH EURO-OBD)], EC-
1135 [QR20 (WITHOUT
EURO-OBD)]
2. Accelerator pedal position (APP) sensorAT-180, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
3. Line pressure testAT- 6 7 , "Line Pressure Test"
4. A/T fluid temperature sensorAT-193, "
DTC BATT/FLUID
TEMP SEN (A/T FLUID
TEMP SENSOR CIRCUIT
AND TCM POWER
SOURCE)"
5. Engine speed signalAT-127, "DTC P0725
ENGINE SPEED SIGNAL"
6. Line pressure solenoid valveAT-163, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
7. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
8. Accumulator N-DAT-414, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 9. Forward clutchAT-471, "Forward and
Overrun Clutches"
Vehicle will not run in “D” and “2”
positions (but runs in “1” and “R”
positions).ON vehicle 1. Control cable adjustmentAT-416, "
Control Cable
Adjustment"
OFF vehicle 2. Low one-way clutchAT-421, "
OVERHAUL",AT-
425, "Locations of Adjust-
ing Shims, Needle Bear-
ings, Thrust Washers and
Snap Rings"
Vehicle will not run in “D”, “1”, “2”
positions (but runs in “R” position).
Clutch slips. Very poor acceleration.
AT- 2 1 8 , "
Vehicle Does Not Creep
Forward In “D”,“2” Or “1” Position"
ON vehicle1. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
2. Stall testAT- 6 4 , "Stall
Te s t"
3. Line pressure testAT- 6 7 , "Line Pressure Test"
4. Line pressure solenoid valveAT-163, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
5. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
6. Accumulator N-DAT-414, "
Control Valve
Assembly and Accumula-
tors"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD