2003 NISSAN X-TRAIL air filter

AT-8
PRECAUTIONS
lVehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
lConverter is contaminated with engine coolant containing antifreeze.
lInternal failure of stator roller clutch.
lHeavy clutch debris due to overheating (blue converter).
lSteel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are
worn or damaged — indicates that lining material came from converter.
The torque converter should not be replaced if:
lThe fluid has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
lThe threads in one or more of the converter bolt holes are damaged.
lTransaxle failure did not display evidence of damaged or worn internal parts, steel particles or clutch plate
lining material in unit and inside the fluid filter.
lVehicle has been exposed to high mileage (only). The exception may be where the torque converter
clutch dampener plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic,
such as taxi, delivery or police use.
EURO-OBD SELF-DIAGNOSIS — EURO-OBD —
lA/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the O/D OFF indicator lamp or the malfunction indicator lamp (MIL). Refer to the
table onAT-42, "
SELF-DIAGNOSTIC RESULT TEST MODE"for the indicator used to display each self-
diagnostic result.
lThe self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM mem-
ories.
Always perform the procedure “HOW TO ERASE DTC” onAT-39, "
HOW TO ERASE DTC"to com-
plete the repair and avoid unnecessary blinking of the MIL.
lThe following self-diagnostic items can be detected using ECM self-diagnostic results mode* only when
the O/D OFF indicator lamp does not indicate any malfunctions.
–PNP switch
–A/T 1st, 2nd, 3rd, or 4th gear function
*: For details of EURO-OBD, refer toAT - 3 7 , "
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION".
lCertain systems and components, especially those related to EURO-OBD, may use a new style
slide-locking type harness connector.
For description and how to disconnect, refer toPG-70, "
HARNESS CONNECTOR".
Wiring Diagrams and Trouble DiagnosisECS004Q4
When you read wiring diagrams, refer to the following:
lGI-14, "How to Read Wiring Diagrams".
lPG-2, "POWER SUPPLY ROUTING".
When you perform trouble diagnosis, refer to the following:
lGI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES".
l"", “HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT”

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-243
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
4.CHECK LINE PRESSURE
Check line pressure at stall point with selector lever in “D” position.
Refer to “Line Pressure Test”,AT-68, "
Line Pressure Test".
OK or NG
OK >> GOTO5
NG >> GOTO8
5.CHECKA/TFLUIDCONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GOTO6
NG >> GOTO8
6.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to $$$$$.
2. Check the following items:
–Shift valve A
–Shift valve B
–Shift solenoid valve A
–Shift solenoid valve B
–Pilot valve
–Pilot filter
OK or NG
OK >> GOTO7
NG >> Repair or replace damaged parts.
7.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
SAT494G
SAT171B

AT-244
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
8.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer toAT-453, "
Installation".
2. Check the following items:
–Shift valve A
–Shift valve B
–Shift solenoid valve A
–Shift solenoid valve B
–Pilot valve
–Pilot filter
3. Disassemble A/T.
4. Check the following items:
–Forward clutch assembly
–Forward one-way clutch
–Low one-way clutch
–High clutch assembly
–Torque converter
–Oil pump assembly
OK or NG
OK >> GOTO7
NG >> Repair or replace damaged parts.
9. A/T Does Not Shift: D1®D2Or Does Not Kickdown: D4®D2ECS004T2
SYMPTOM:
A/T does not shift from D
1to D2at the specified speed.
A/T does not shift from D
4to D2when depressing accelerator pedal fully at the specified speed.
1.CHECK SYMPTOM
Are 7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position and 8. Vehicle Cannot Be Started From D
1
OK?
Ye s o r N o
Yes >> GOTO2
No >> Go to 7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position and 8. Vehicle Cannot Be
Star ted F ro m D
1,AT-240, "7. Vehicle Does Not Creep Forward In“D”,“2”Or“1”Position",AT -
242, "8. Vehicle Cannot Be Started From D1".
2.CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
Ye s o r N o
Yes >> Check PNP switch circuit. Refer to “21. TCM Self-diag-
nosis Does Not Activate (PNP & Overdrive Control,
switches, and Throttle Position sensor Circuit Checks)”,
AT-260, "
21. TCM Self-diagnosis Does Not Activate
(PNP & Overdrive Control Switches, and Throttle Posi-
tion Sensor Circuit Checks)".
No >> GOTO3
SCIA0706E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-245
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
3.CHECK VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR) AND CHECK VEHICLE SPEED
SENSOR·MTR CIRCUIT
Check vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR circuit. Refer toAT-392,
"VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)"andAT-142, "DTC P0720 VEHICLE SPEED
SENSOR·A/T (REVOLUTION SENSOR)"(Except for Euro-OBD)./ Refer toAT-397, "DTC VEHICLE SPEED
SENSOR MTR"andAT-222, "DTC VEHICLE SPEED SENSOR MTR"(EURO-OBD).
OK or NG
OK >> GOTO4
NG >> Repair or replace vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR
circuits.
4.CHECK THROTTLE POSITION SENSOR*
*: This sensor means accelerator pedal position (APP) sensor.
Check throttle position sensor. Refer to "EC-´´", “DTC P0121
ACCELERATOR PEDAL POSITION(APP)SENSOR”. —Except for
Euro-OBD/Refer to "EC-´´", “DTC P0121 ACCELERATOR PEDAL
POSITION(APP)SENSOR”. — Euro-OBD
OK or NG
OK >> GOTO5
NG >> Repair or replace accelerator pedal position (app) sen-
sor.
5.CHECK A/T FLUID CONIDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GOTO6
NG >> GOTO8
6.DETECT MALFUNCTIONING ITEM
1. Remove control valve. Refer toAT-453, "
Installation".
2. Check the following items:
–Shift valve A
–Shift solenoid valve A (AT-406, "SHIFT SOLENOID VALVE A": Except for Euro-OBD/AT-193, "DTC
P0750 SHIFT SOLENOID VALVE A":Euro-OBD)
–Pilot valve
–Pilot filter
OK or NG
OK >> GOTO7
NG >> Repair or replace damaged parts.
PBIB0498E
SAT171B

AT-246
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
7.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
8.DETECT MALFUNCTIONING ITEM
1. Remove control valve. Refer toAT-453, "
Installation".
2. Check the following items:
–Shift valve A
–Shift solenoid valve A (AT-406, "SHIFT SOLENOID VALVE A": Except for Euro-OBD/AT - 1 9 3 , "DTC
P0750 SHIFT SOLENOID VALVE A": Euro-OBD)
–Pilot valve
–Pilot filter
3. Disassemble A/T.
4. Check the following items:
–Servo piston assembly
–Brake band
–Oil pump assembly
OK or NG
OK >> GOTO7
NG >> Repair or replace damaged parts.
10. A/T Does Not Shift: D2®D3ECS004T3
SYMPTOM:
A/T does not shift from D
2to D3at the specified speed.
1.CHECK SYMPTOM
Are 7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position and 8. Vehicle Cannot Be Started From D
1
OK?
Ye s o r N o
Yes >> GOTO2
No >> Go to 7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position and 8. Vehicle Cannot Be
Star ted F ro m D
1,AT-240, "7. Vehicle Does Not Creep Forward In“D”,“2”Or“1”Position",AT -
242, "8. Vehicle Cannot Be Started From D1".

AT-248
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
5.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer toAT-453, "
Installation".
2. Check the following items:
–Shift valve B
–Shift solenoid valve B (AT- 4 11 , "SHIFT SOLENOID VALVE B": Except for Euro-OBD/AT-198, "DTC
P0755 SHIFT SOLENOID VALVE B": Euro-OBD)
–Pilot valve
–Pilot filter
OK or NG
OK >> GOTO6
NG >> Repair or replace damaged parts.
6.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
7.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer toAT-453, "
Installation".
2. Check the following items:
–Shift valve B
–Shift solenoid valve B (AT- 4 11 , "SHIFT SOLENOID VALVE B": Except for Euro-OBD/AT-198, "DTC
P0755 SHIFT SOLENOID VALVE B": Euro-OBD)
–Pilot valve
–Pilot filter
3. Disassemble A/T.
4. Check the following items:
–Servo piston assembly
–High clutch assembly
–Oil pump assembly
OK or NG
OK >> GOTO6
NG >> Repair or replace damaged parts.

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-251
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
3.CHECK THROTTLE POSITION SENSOR*
*: This sensor means accelerator pedal position (APP) senror.
Check throttle position sensor. Refer to "EC-´´", “DTC P0121
ACCELERATOR PEDAL POSITION(APP)SENSOR”. —Except for
Euro-OBD/Refer to "EC-´´", “DTC P0121 ACCELERATOR PEDAL
POSITION(APP)SENSOR”. — Euro-OBD
OK or NG
OK >> GOTO4
NG >> Repair or replace throttle position sensor.
4.CHECKA/TFLUIDCONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GOTO5
NG >> GOTO7
5.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer toAT-453, "
Installation".
2. Check the following items:
–Shift valve B
–Overrun clutch control valve
–Shift solenoid valve B
–Pilot valve
–Pilot filter
OK or NG
OK >> GOTO6
NG >> Repair or replace damaged parts.
6.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
PBIB0498E
SAT171B

AT-252
[EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
7.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer toAT-453, "
Installation".
2. Check the following items:
–Shift valve B
–Overrunclutchcontrolvalve
–Shift solenoid valve B
–Pilot valve
–Pilot filter
3. Disassemble A/T.
4. Check the following items:
–Servo piston assembly
–Brake band
–Torque converter
–Oil pump assembly
OK or NG
OK >> GOTO6
NG >> Repair or replace damaged parts.
12. A/T Does Not Perform Lock-upECS004T5
SYMPTOM:
A/T does not perform lock-up at the specified speed.
1.CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to torque converter clutch sole-
noid valve circuit after cruise test?
Ye s o r N o
Yes >> Check torque converter clutch solenoid valve circuit.
Refer toAT-421, "
TORQUE CONVERTER CLUTCH
SOLENOID VALVE"(Except for Euro-OBD)/AT-181,
"DTC P0740 TORQUE CONVERTER CLUTCH SOLE-
NOID VALVE"(Euro-OBD).
No >> GOTO2
2.CHECK THROTTLE POSITION SENSOR*
*: This sensor means accelerator pedal position (APP) senror.
Check throttle position sensor. Refer to "EC-´´", “DTC P0121
ACCELERATOR PEDAL POSITION(APP)SENSOR”. —Except for
Euro-OBD/Refer to "EC-´´", “DTC P0121 ACCELERATOR PEDAL
POSITION(APP)SENSOR”. — Euro-OBD
OK or NG
OK >> GOTO3
NG >> Repair or replace throttle position sensor.
SCIA0772E
PBIB0498E