2001 NISSAN X-TRAIL engine control

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-70
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
1. CHECK BEFORE ENGINE IS STARTED
1. CHECK O/D OFF INDICATOR LAMP
1. Park vehicle on flat surface.
2. Turn ignition switch to “OFF” position.
3. Move selector lever to “P” position.
4. Set overdrive control switch to “ON” position.
5. Turn ignition switch to “ON” position. (Do not start engine.)
6. Does O/D OFF indicator lamp come on for about 2 seconds?
Ye s o r N o
Yes >> GO TO 2
No >> Stop Road Test. Go to “O/D OFF Indicator Lamp Does
Not Come On”, AT- 2 0 9
.
2. CHECK O/D OFF INDICATOR LAMP
Does O/D OFF indicator lamp flicker for about 8 seconds?
Ye s o r N o
Yes (Except for Euro-OBD)>>TCM is under fail-safe mode. Per-
form self-diagnosis and check NG items on the DIAG-
NOSTIC WORKSHEET, AT- 2 5 9 , "
DIAGNOSTIC
WORKSHEET" . Refer to AT- 2 5 3 , "SELF-DIAGNOSTIC
PROCEDURE (WITHOUT CONSULT-II)" .
No (Except for Euro-OBD)>>1.Turn ignition switch to “OFF” posi-
tion.
2. Perform self-diagnosis and note NG items.
Refer to AT- 2 5 3 , "
SELF-DIAGNOSTIC PROCEDURE
(WITHOUT CONSULT-II)" .
3. Go to “2. CHECK AT IDLE”, AT- 7 1
.
Yes (EURO-OBD)>>TCM is under fail-safe mode. Perform self-diagnosis and check NG items on the DIAG-
NOSTIC WORKSHEET, AT- 5 7 , "
DIAGNOSTIC WORKSHEET" . Refer to AT- 5 1 , "TCM SELF-
DIAGNOSTIC PROCEDURE (NO TOOLS)" .
No (EURO-OBD)>>1.Turn ignition switch to “OFF” position.
2. Perform self-diagnosis and note NG items.
Refer to AT- 5 1 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" .
3. Go to “2. CHECK AT IDLE”, AT- 7 1
.
SAT774B
SCIA0693E
SCIA0693E

AT-78
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
Cruise Test — Part 1
1. CHECK STARTING GEAR (D1 ) POSITION
1. Drive vehicle for approx. 10 minutes to warm engine oil and ATF up to operating
temperature.
2. Park vehicle on flat surface.
3. Set overdrive control switch to “ON” position.
4. Move selector lever to “P” position.
5. Start engine.
6. Move selector lever to “D” position.
7. Accelerate vehicle by constantly depressing accelerator pedal
halfway.
8. Does vehicle start from D
1 ?
Read gear position.
Ye s o r N o
Yes >> GO TO 2
No >> Mark the box of “Vehicle Cannot Be Started From D
1 ”
on the DIAGNOSTIC WORKSHEET. Continue Road
Te s t . ATF operating temperature: 50 - 80°C (122 - 176°F)
SAT774B
SAT775B
SAT495G

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"

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

AT-90
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Excessive creep. ON vehicle 1. 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)]
No creep at all.
AT- 2 1 5 , "
Vehicle Does Not Creep
Backward In “R” Position" and AT-
218, "Vehicle Does Not Creep For-
ward In “D”,“2” Or “1” Position"
ON vehicle1. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
2. Line pressure testAT-396, "LINE PRES-
SURE SOLENOID VALVE"
3. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle4. Forward clutchAT-471, "
Forward and
Overrun Clutches"
5. Oil pumpAT-444, "Oil Pump"
6. Torque converterAT-425, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Failure to change gear from “D1 ” to
“D
2 ”.ON vehicle1. Control cable adjustmentAT-416, "
Control Cable
Adjustment"
2. Shift solenoid valve AAT-170, "
DTC P0750
SHIFT SOLENOID VALVE
A"
3. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
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- 1 9 9 , "DTC
VEHICLE SPEED SEN-
SOR MTR"
5. Accelerator pedal position (APP) sensorAT-180, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
OFF vehicle 6. Brake bandAT-488, "Band Servo Pis-
ton Assembly"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD

AT-92
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Too high a gear change point from
“D
1 ” to “D2 ”, from “D2 ” to “D3 ”,
from “D
3 ” to “D4 ”.
AT- 2 2 3 , "
A/T Does Not Shift: D1→
D2 Or Does Not Kickdown: D4→
D2",AT-225, "A/T Does Not Shift: D2
→ D3" and AT-227, "A/T Does Not
Shift: D3→ D4"
ON vehicle1. Accelerator pedal position (APP) sensorAT-180, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
2. 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- 1 9 9 , "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. Shift solenoid valve AAT-170, "
DTC P0750
SHIFT SOLENOID VALVE
A"
4. Shift solenoid valve BAT-175, "
DTC P0755
SHIFT SOLENOID VALVE
B"
Gear change directly from “D1 ” to
“D
3 ” occurs.ON vehicle1. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
2. Accumulator servo releaseAT-414, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 3. Brake bandAT-488, "Band Servo Pis-
ton Assembly"
Engine stops when shifting lever
into “R”, “D”, “2” and “1”.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. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
3. Torque converter clutch solenoid valveAT-158, "
DTC P0740
TORQUE CONVERTER
CLUTCH SOLENOID
VA LV E"
4. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 5. Torque converterAT-425, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD

AT-98
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Kickdown does not operate when
depressing pedal in “D
4 ” within kick
down vehicle speed.ON vehicle1. Accelerator pedal position (APP) sensorAT-180, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
2. 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- 1 9 9 , "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. Shift solenoid valve AAT-170, "
DTC P0750
SHIFT SOLENOID VALVE
A"
4. Shift solenoid valve BAT-175, "
DTC P0755
SHIFT SOLENOID VALVE
B"
Kickdown operates or engine over-
runs when depressing pedal in “D
4 ”
beyond kick down vehicle speed
limit.ON vehicle1. 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- 1 9 9 , "DTC
VEHICLE SPEED SEN-
SOR MTR"
2. Accelerator pedal position (APP) sensorAT-180, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
3. Shift solenoid valve AAT-170, "
DTC P0750
SHIFT SOLENOID VALVE
A"
4. Shift solenoid valve BAT-175, "
DTC P0755
SHIFT SOLENOID VALVE
B"
Races extremely fast or slips in
changing from “D
4 ” to “D3 ” when
depressing pedal.ON vehicle1. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
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. Line pressure solenoid valveAT-163, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
5. Shift solenoid valve AAT-170, "
DTC P0750
SHIFT SOLENOID VALVE
A"
6. Control valve assemblyAT-414, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle7. Brake bandAT-488, "
Band Servo Pis-
ton Assembly"
8. Forward clutchAT-471, "Forward and
Overrun Clutches"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD