EC-154 NISSAN X-TRAIL 2003 Electronic Repair Manual

ACCELERATOR CONTROL SYSTEM
ACC-3
C
D
E
F
G
H
I
J
K
L
MA
ACC
lDo not adjust the adjusting screw (painted white) of the accelerator work unit. (YD22DDTi)
lWhen the harness connector of the accelerator sensor is disconnected, perform²Accelerator
Pedal Released Position Learning².Referto²Basic Service Procedure²in EC section.
INSTALLATION
Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION
lCheck that the accelerator pedal moves smoothly within the whole operation range.
lCheck that the accelerator pedal securely returns to the original position.
lFor the electrical inspection of the accelerator pedal assembly, refer toEC-154, "DTC P0121 APP SEN-
SOR"(WITH EURO-OBD) andEC-484, "DTC P0121 APP SENSOR"(WITHOUT EURO-OBD).
(QR20DE)
lFor the electrical inspection of the accelerator work unit, refer toEC-715, "DTC P0120 ACCELERATOR
PEDAL POSITION SENSOR"andEC-783, "DTC P1510 ACCELERATOR PEDAL RELEASED POSI-
TION SWITCH".(YD22DDTi)
lCheck that the drum of the accelerator work unit can be fully opened. (YD22DDTi)

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-87
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Transaxle noise in “P” and “N” posi-
tions.ON vehicle1. Fluid levelAT-64,
"FLUID
LEVEL
CHECK"
¬
2. Line pressure testAT-68, "
Line
Pressure
Te s t"
¬
3. Throttle position sensor (Accelerator
pedal position (App) sensor) AjustmentEC-154, "
DTC P0121 APP
SENSOR"
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT-392,
"VEHICLE
SPEED
SENSOR·A/
T(REVO-
LUTION
SENSOR)",
AT-397,
"DTC VEHI-
CLE
SPEED
SENSOR
MTR"
AT-142,
"DTC P0720
VEHICLE
SPEED
SENSOR·A/
T(REVO-
LUTION
SENSOR)",
AT-222,
"DTC VEHI-
CLE SPEED
SENSOR
MTR"
5. Engine speed signalAT-432,"ENGINE
SPEED
SIGNAL"
AT-147,
"DTC P0725
ENGINE
SPEED
SIGNAL"
OFF vehicle6. Oil pumpAT-485, "
Oil
Pump"¬
7. Torque converterAT-465,
"Locations
of Adjusting
Shims, Nee-
dle Bear-
ings, 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 3 4 , "
3. In“P”Position, Vehicle
Moves Forward Or Backward When
Pushed"
ON vehicle 1. Control cable adjustmentAT-456,"Control
Cable
Adjustment"
¬
OFF vehicle 2. Parking componentsAT-461,
"Compo-
nents",AT-
482,
"REPAIR
FOR COM-
PONENT
PA R T S"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

AT-90
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Sharp shock in shifting from “N” to
“D” position.ON vehicle1. Engine idling rpmEC-XX, “Idle
Speed and
Ignition Tim-
ing”¬
2. Throttle position sensor Accelerator pedal
position (App) sensor AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
3. Line pressure testAT- 6 8 , "
Line
Pressure
Te s t"
¬
4. A/T fluid temp sen circ and TCM pow sourAT- 4 2 6 ,
"BATT/
FLUID
TEMP SEN
(A/T FLUID
TEMP SEN-
SOR CIR-
CUIT AND
TCM
POWER
SOURCE)"
AT- 2 1 6 ,
"DTC BATT/
FLUID
TEMP SEN
(A/T FLUID
TEMP SEN-
SOR CIR-
CUIT AND
TCM
POWER
SOURCE)"
5. Engine speed signalAT- 4 3 2 ,"ENGINE
SPEED
SIGNAL"
AT- 1 4 7 ,
"DTC P0725
ENGINE
SPEED
SIGNAL"
6. Line pressure solenoid valveAT- 4 3 6 ,
"LINE
PRES-
SURE
SOLENOID
VA LV E"
AT- 1 8 6 ,
"DTC P0745
LINE PRES-
SURE
SOLENOID
VA LV E"
7. Control valve assemblyAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
8. Accumulator N-DAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
OFF vehicle 9. Forward clutchAT- 5 1 2 ,
"Forward
and Overrun
Clutches"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-93
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Clutches or brakes slip somewhat in
starting.ON vehicle1. Fluid levelAT-64,
"FLUID
LEVEL
CHECK"
¬
2. Control cable adjustmentAT-456,
"Control
Cable
Adjustment"
¬
3. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
4. Line pressure testAT-68, "
Line
Pressure
Te s t"
¬
5. Line pressure solenoid valveAT-436,
"LINE
PRES-
SURE
SOLENOID
VA LV E"
AT-186,
"DTC P0745
LINE PRES-
SURE
SOLENOID
VA LV E"
6. Control valve assemblyAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬
7. Accumulator N-DAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬
OFF vehicle8. Forward clutchAT-512,
"Forward
and Overrun
Clutches"
¬
9. Reverse clutchAT-504,
"Reverse
Clutch"
¬
10. Low & reverse brakeAT-518,
"Low&
Reverse
Brake"
¬
11. Oil pumpAT-485, "
Oil
Pump"¬
12. Torque converterAT-465,
"Locations
of Adjusting
Shims, Nee-
dle Bear-
ings, Thrust
Washers
and Snap
Rings"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

AT-98
[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-244, "
9. A/T Does Not Shift: D1
®D2Or Does Not Kickdown: D4®
D2",AT-246, "10. A/T Does Not
Shift: D2®D3"andAT-249, "11 . A /
T Does Not Shift: D3®D4"
ON vehicle1.Throttle position sensor (Accelerator pedal
position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 9 2 ,
"VEHICLE
SPEED
SENSOR·A/
T(REVO-
LUTION
SENSOR)",
AT- 3 9 7 ,
"DTC VEHI-
CLE
SPEED
SENSOR
MTR"
AT- 1 4 2 ,
"DTC P0720
VEHICLE
SPEED
SENSOR·A/
T(REVO-
LUTION
SENSOR)",
AT- 2 2 2 ,
"DTC VEHI-
CLE SPEED
SENSOR
MTR"
3. Shift solenoid valve AAT- 4 0 6 ,"SHIFT
SOLENOID
VA LV E A"
AT- 1 9 3 ,
"DTC P0750
SHIFT
SOLENOID
VA LV E A"
4. Shift solenoid valve BAT- 4 11 ,"SHIFT
SOLENOID
VA LV E B"
AT- 1 9 8 ,
"DTC P0755
SHIFT
SOLENOID
VA LV E B"
Gear change directly from “D1”to
“D
3”occurs.ON vehicle1. Fluid levelAT- 6 4 ,
"FLUID
LEVEL
CHECK"
¬
2. Accumulator servo releaseAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
OFF vehicle 3. Brake bandAT- 5 3 0 ,
"Band
Servo Pis-
ton Assem-
bly"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

AT-100
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Too sharp a shock in change from
“D
1”to “D2”.ON vehicle1. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
2. Line pressure testAT- 6 8 , "
Line
Pressure
Te s t"
¬
3. Accumulator servo releaseAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
4. Control valve assemblyAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
5. A/T fluid temp sen circ and TCM pow sourAT- 4 2 6 ,
"BATT/
FLUID
TEMP SEN
(A/T FLUID
TEMP SEN-
SOR CIR-
CUIT AND
TCM
POWER
SOURCE)"
AT- 2 1 6 ,
"DTC BATT/
FLUID
TEMP SEN
(A/T FLUID
TEMP SEN-
SOR CIR-
CUIT AND
TCM
POWER
SOURCE)"
OFF vehicle 6. Brake bandAT- 5 3 0 ,
"Band
Servo Pis-
ton Assem-
bly"
¬
Too sharp a shock in change from
“D
2”to “D3”.ON vehicle1. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
2. Line pressure testAT- 6 8 , "
Line
Pressure
Te s t"
¬
3. Control valve assemblyAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
OFF vehicle4. High clutchAT- 5 0 7 ,
"High
Clutch"
¬
5. Brake bandAT- 5 3 0 ,
"Band
Servo Pis-
ton Assem-
bly"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-101
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Too sharp a shock in change from
“D
3”to“D4”.ON vehicle1. Throttle position sensor Accelerator pedal
position (App) sensor AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
2. Line pressure testAT-68, "
Line
Pressure
Te s t"
¬
3. Control valve assemblyAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬
OFF vehicle4. Brake bandAT-530,
"Band
Servo Pis-
ton Assem-
bly"
¬
5. Overrun clutchAT-512,
"Forward
and Overrun
Clutches"
¬
Almost no shock or clutches slipping
in change from “D
1”to“D2”.ON vehicle1. Fluid levelAT-64,
"FLUID
LEVEL
CHECK"
¬
2. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
3. Line pressure testAT-68, "
Line
Pressure
Te s t"
¬
4. Accumulator servo releaseAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬
5. Control valve assemblyAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬
OFF vehicle 6. Brake bandAT-530,
"Band
Servo Pis-
ton Assem-
bly"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

AT-102
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Almost no shock or slipping in
change from “D
2”to “D3”.ON vehicle1. Fluid levelAT- 6 4 ,
"FLUID
LEVEL
CHECK"
¬
2. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
3. Line pressure testAT- 6 8 , "
Line
Pressure
Te s t"
¬
4. Control valve assemblyAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
OFF vehicle5. High clutchAT- 5 0 7 ,
"High
Clutch"
¬
6. Brake bandAT- 5 3 0 ,
"Band
Servo Pis-
ton Assem-
bly"
¬
Almost no shock or slipping in
change from “D
3”to “D4”.ON vehicle1. Fluid levelAT- 6 4 ,
"FLUID
LEVEL
CHECK"
¬
2. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
3. Line pressure testAT- 6 8 , "
Line
Pressure
Te s t"
¬
4. Control valve assemblyAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
OFF vehicle5. High clutchAT- 5 0 7 ,
"High
Clutch"
¬
6. Brake bandAT- 5 3 0 ,
"Band
Servo Pis-
ton Assem-
bly"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-105
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Failuretochangegearfrom“D4”to
“D
3”.ON vehicle1. Fluid levelAT-64,
"FLUID
LEVEL
CHECK"
¬
2. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
3. Overrun clutch solenoid valveAT-416,
"OVER-
RUN
CLUTCH
SOLENOID
VA LV E"
AT-208,
"DTC P1760
OVERRUN
CLUTCH
SOLENOID
VA LV E"
4. Shift solenoid valve AAT-406,"SHIFT
SOLENOID
VA LV E A"
AT-193,
"DTC P0750
SHIFT
SOLENOID
VA LV E A"
5. Line pressure solenoid valveAT-436,
"LINE
PRES-
SURE
SOLENOID
VA LV E"
AT-186,
"DTC P0745
LINE PRES-
SURE
SOLENOID
VA LV E"
6. Control valve assemblyAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬
OFF vehicle7. Low & reverse brakeAT-518,
"Low&
Reverse
Brake"
¬
8. Overrun clutchAT-512,
"Forward
and Overrun
Clutches"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

AT-106
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Failure to change gear from “D3”to
“D
2”or from “D4”to“D2”.ON vehicle1. Fluid levelAT- 6 4 ,
"FLUID
LEVEL
CHECK"
¬
2. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
3. Shift solenoid valve AAT- 4 0 6 ,"SHIFT
SOLENOID
VA LV E A"
AT- 1 9 3 ,
"DTC P0750
SHIFT
SOLENOID
VA LV E A"
4. Shift solenoid valve BAT- 4 11 ,"SHIFT
SOLENOID
VA LV E B"
AT- 1 9 8 ,
"DTC P0755
SHIFT
SOLENOID
VA LV E B"
5. Control valve assemblyAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
OFF vehicle6. High clutchAT- 5 0 7 ,
"High
Clutch"
¬
7. Brake bandAT- 5 3 0 ,
"Band
Servo Pis-
ton Assem-
bly"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD