2003 NISSAN X-TRAIL brake sensor

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-291
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
5. Start engine and measure line pressure at idle and stall speed.
lWhen measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer toAT-563, "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)".
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS004VU
DESCRIPTION
lThe purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
lThe 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.
lOil pump wear
lControl piston damage
lPressure regulator valve or plug sticking
lSpring for pressure regulator valve damaged
lFluid pressure leakage between oil strainer and pressure regulator valve
lClogged strainer
Line pressure is low in particular posi-
tion.
lFluid pressure leakage between manual valve and particular clutch
lFor 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 “CLUTCH AND BAND CHART”,AT-19, "
CLUTCH AND BAND
CHART".
Line pressure is high.
lMaladjustment of throttle position sensor
lA/T fluid temperature sensor damaged
lLine pressure solenoid valve sticking
lShort circuit of line pressure solenoid valve circuit
lPressure modifier valve sticking
lPressure regulator valve or plug sticking
lOpen in dropping resistor circuit
At stall
speedLine pressure is low.
lMaladjustment of throttle position sensor
lLine pressure solenoid valve sticking
lShort circuit of line pressure solenoid valve circuit
lPressure regulator valve or plug sticking
lPressure modifier valve sticking
lPilot valve sticking
SAT786A

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-315
[EXC.F/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-286,
"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-290,"Line Pres-
sure Test"
¬
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

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-317
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Failuretochangegearfrom“D1”to
“D
2”.ON vehicle1. PNP switch adjustmentAT-456,
"Park/Neu-
tral Position
(PNP)
Switch
Adjustment"
¬
2. Control cable adjustmentAT-456,
"Control
Cable
Adjustment"
¬
3. Shift solenoid valve AAT-406,
"SHIFT
SOLENOID
VA LV E A"
AT-193,
"DTC P0750
SHIFT
SOLENOID
VA LV E A"
4. Control valve assemblyAT-454,
"Control
Va lv e
Assembly
and Accu-
mulators"
¬
5. 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"
OFF vehicle 6. Brake bandAT-530,
"Band
Servo Pis-
ton Assem-
bly"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

AT-318
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Failure to change gear from “D2”to
“D
3”.ON vehicle1. PNP switch adjustmentAT- 4 5 6 ,
"Park/Neu-
tral Position
(PNP)
Switch
Adjustment"
¬
2. Control cable adjustmentAT- 4 5 6 ,
"Control
Cable
Adjustment"
¬
3. Shift solenoid valve BAT- 4 11 ,
"SHIFT
SOLENOID
VA LV E B"
AT- 1 9 8 ,
"DTC P0755
SHIFT
SOLENOID
VA LV E B"
4. Control valve assemblyAT- 4 5 4 ,
"Control
Va l v e
Assembly
and Accu-
mulators"
¬
5. 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"
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

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-319
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Failuretochangegearfrom“D3”to
“D
4”.ON vehicle1. PNP switch adjustmentAT-456,
"Park/Neu-
tral Position
(PNP)
Switch
Adjustment"
¬
2. Control cable adjustmentAT-456,
"Control
Cable
Adjustment"
¬
3. Shift solenoid valve AAT-406,
"SHIFT
SOLENOID
VA LV E A"
AT-193,
"DTC P0750
SHIFT
SOLENOID
VA LV E A"
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. A/T fluid temp sen circ and TCM pow sourAT-426,
"BATT/
FLUID
TEMP SEN
(A/T FLUID
TEMP SEN-
SOR CIR-
CUIT AND
TCM
POWER
SOURCE)"
AT-216,
"DTC BATT/
FLUID
TEMP SEN
(A/T FLUID
TEMP SEN-
SOR CIR-
CUIT AND
TCM
POWER
SOURCE)"
OFF vehicle 6. Brake bandAT-530,
"Band
Servo Pis-
ton Assem-
bly"
¬ Symptom Condition Diagnostic ItemReference Page
Except for
Euro-OBDEURO-OBD

AT-320
[EXC.F/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-366, "
9. A/T Does Not Shift: D1
®D2Or Does Not Kickdown: D4®
D2",AT-368, "10. A/T Does Not
Shift: D2®D3"andAT-371, "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- 2 8 6 ,
"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-322
[EXC.F/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- 2 9 0 ,"Line Pres-
sure Test"
¬
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- 2 9 0 ,"Line Pres-
sure Test"
¬
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-323
[EXC.F/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-290,"Line Pres-
sure Test"
¬
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-286,
"FLUID
LEVEL
CHECK"
¬
2. Throttle position sensor (Accelerator
pedal position (App) sensor) AdjustmentEC-154, "
DTC P0121 APP
SENSOR"
3. Line pressure testAT-290,"Line Pres-
sure Test"
¬
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