Page 2420 of 3833
AT-342
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
4. CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 1 3 , "
Installation" .
2. Check the following items:
–Shift valve A
–Overrun clutch control valve
–Shift solenoid valve A
3. Disassemble A/T.
4. Check the following items:
–Servo piston assembly
–Brake band
OK or NG
OK >> GO TO 6.
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.
SAT171B
SAT778B
Page 2422 of 3833
AT-344
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
4. CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 1 3 , "
Installation" .
2. Check the following items:
–Shift valve A
–Overrun clutch control valve
–Shift solenoid valve A
3. Disassemble A/T.
4. Check the following items:
–Overrun clutch assembly
–Low & reverse bake assembly
OK or NG
OK >> GO TO 6.
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.
TCM Self-diagnosis Does Not ActivateECS004VM
SYMPTOM:
O/D OFF indicator lamp does not come on in TCM self-diagnostic procedure even if the lamp circuit is
good.
SAT171B
SAT778B
Page 2462 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual AT-384
[ALL]
TORQUE CONVERTER CLUTCH SOLENOID VALVE
Diagnostic Procedure
ECS004U6
1. CHECK VALVE RESISTANCE
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connecto NISSAN X-TRAIL 2001 Service Repair Manual AT-384
[ALL]
TORQUE CONVERTER CLUTCH SOLENOID VALVE
Diagnostic Procedure
ECS004U6
1. CHECK VALVE RESISTANCE
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connecto](/manual-img/5/57405/w960_57405-2461.png)
AT-384
[ALL]
TORQUE CONVERTER CLUTCH SOLENOID VALVE
Diagnostic Procedure
ECS004U6
1. CHECK VALVE RESISTANCE
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 5 and ground.
OK or NG
OK >> GO TO 2.
NG >> 1. Remove oil pan. Refer to AT-413, "
Installation" .
2. Check the following items:
Torque converter clutch solenoid valve
Refer to AT-385, "
Component Inspection" .
Harness of terminal cord assembly for short or open
2. CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check continuity between terminal 5 and TCM harness connector terminal 3.
If OK, check harness for short to ground and short to power.
4. Reinstall any part removed.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK DTC
Perform Self-diagnosis Code confirmation procedure. Refer to AT- 3 8 1 , "
SELF-DIAGNOSIS CODE CONFIR-
MATION PROCEDURE" .
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. Resistance: 5 - 20Ω
SCIA0731E
Continuity should exist.
SCIA0732E
Page 2467 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)
AT-389
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Diagnostic ProcedureECS004UA
1.CHECK TCM POWER SOURCE
1. Turn ignition switch to “ON NISSAN X-TRAIL 2001 Service Repair Manual BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)
AT-389
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Diagnostic ProcedureECS004UA
1.CHECK TCM POWER SOURCE
1. Turn ignition switch to “ON](/manual-img/5/57405/w960_57405-2466.png)
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)
AT-389
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Diagnostic ProcedureECS004UA
1.CHECK TCM POWER SOURCE
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
3. Turn ignition switch to “OFF” position.
4. Check voltage between TCM terminal 28 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check the following items:
●Harness for short or open between ignition switch and
TCM (Main harness)
●Ignition switch and fuse
Refer to PG-2, "
POWER SUPPLY ROUTING" .
2.CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminals 6 and 7 when A/T is cold.
4. Reinstall any part removed.
OK or NG
OK (With CONSULT-II)>>GO TO 3.
OK (Without CONSULT-II)>>GO TO 4.
NG >> 1. Remove oil pan.
2. Check the following items:
A/T fluid temperature sensor
Refer to AT- 3 9 1 , "
Component Inspection" .
Harness of terminal cord assembly for short or open Voltage: Battery voltage
Voltage: Battery voltage
SCIA0736E
Resistance Cold[20°C(68°F)]
: Approximately 2.5 kΩ
SCIA0737E
Page 2472 of 3833
AT-394
[ALL]
ENGINE SPEED SIGNAL
Diagnostic Procedure
ECS004UE
1. CHECK DTC WITH ECM
Perform diagnostic test mode II (self-diagnostic results) for engine control. Check ignition signal circuit condi-
tion.
OK or NG
OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG >> Check ignition signal circuit for engine control. Refer to EC-683, "
IGNITION SIGNAL" (QR25DE)
orEC-1331, "
IGNITION SIGNAL" (QR20DE).
2. CHECK INPUT SIGNAL (WITH CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out the value of “ENGINE SPEED”.
Check engine speed changes according to throttle position.
OK or NG
OK >> GO TO 4.
NG >> Check the following items:
●Harness for short or open between TCM and ECM
●Resistor and ignition coil
Refer to EC-683, "
IGNITION SIGNAL" (QR25DE) or
EC-1331, "
IGNITION SIGNAL" (QR20DE).
SAT014K
SAT645J
Page 2473 of 3833
ENGINE SPEED SIGNAL
AT-395
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3.CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 39 and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following items:
●Harness for short or open between TCM and ECM
●Resistor and ignition coil
Refer to EC-683, "
IGNITION SIGNAL" (QR25DE) or
EC-1331, "
IGNITION SIGNAL" (QR20DE).
4.CHECK DTC
Perform Self-diagnosis Code confirmation procedure. Refer to AT- 3 9 2 , "
SELF-DIAGNOSIS CODE CONFIR-
MATION PROCEDURE" .
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. Voltage (Idle speed):
Refer to EC-479, "
ECM INSPECTION TABLE"
(QR25DE) or EC-1166, "ECM INSPECTION
TABLE" (QR20DE).
SCIA0740E
Page 2474 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual AT-396
[ALL]
LINE PRESSURE SOLENOID VALVE
LINE PRESSURE SOLENOID VALVE
PFP:31940
DescriptionECS004UF
The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the NISSAN X-TRAIL 2001 Service Repair Manual AT-396
[ALL]
LINE PRESSURE SOLENOID VALVE
LINE PRESSURE SOLENOID VALVE
PFP:31940
DescriptionECS004UF
The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the](/manual-img/5/57405/w960_57405-2473.png)
AT-396
[ALL]
LINE PRESSURE SOLENOID VALVE
LINE PRESSURE SOLENOID VALVE
PFP:31940
DescriptionECS004UF
The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent
from the TCM.
The line pressure duty cycle value is not consistent when the
closed throttle position switch is “ON”. To confirm the line
pressure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is
“OFF”.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
NOTE:
The line pressure duty cycle value is not consistent when the closed throttle position switch is “ON”. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is “OFF”.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the malfunction is eliminated.
SCIA0735E
Monitor item Condition Specification
Line pressure solenoid valve dutySmall throttle opening
(Low line pressure)
↓
Large throttle opening
(High line pressure)Approximately 24%
↓
Approximately 95%
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
1R/WLine pressure
solenoid valveWhen releasing accelerator pedal
after warming up engine.1.5 - 3.0V
When depressing accelerator pedal
fully after warming up engine.0V
2P/BLine pressure
solenoid valve
(with dropping
resistor)When releasing accelerator pedal
after warming up engine.5 - 14V
When depressing accelerator pedal
fully after warming up engine.0V
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: LINE PRESSURE S/V
TCM detects an improper voltage drop
when it tries to operate the solenoid valve.
●Harness or connectors
(The solenoid circuit is open or shorted.)
●Line pressure solenoid valve
: 10th judgement flicker
Page 2488 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual AT-410
[ALL]
A/T SHIFT LOCK SYSTEM
7. CHECK GROUND CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device harness con NISSAN X-TRAIL 2001 Service Repair Manual AT-410
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A/T SHIFT LOCK SYSTEM
7. CHECK GROUND CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device harness con](/manual-img/5/57405/w960_57405-2487.png)
AT-410
[ALL]
A/T SHIFT LOCK SYSTEM
7. CHECK GROUND CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device harness connector M58 terminal 6 (B) and ground.
If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
8. CHECK PARK POSITION SWITCH AND RELAY CIRCUIT (COIL SIDE)
Check continuity between A/T device harness connector M58 terminals 6 (B) and 7 (P).
OK or NG
OK >> GO TO 9.
NG >> Replace park position switch or relay.
9. CHECK SHIFT LOCK SOLENOID AND RELAY CIRCUIT (POINT SIDE)
1. Connect A/T device harness connector.
2. Turn ignition switch to “ON” position.
3. Check operation sound.
OK or NG
OK >> GO TO 10.
NG >> Replace shift lock solenoid or relay.Continuity should exist.
SCIA0784E
SAT665K
Condition Brake pedal Operation sound
When ignition switch is turned to
“ON” position and selector lever
is set in “P” position.Depressed Yes
Released No