2001 NISSAN X-TRAIL Line pressure

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-317
[EXC.F/EURO-OBD]
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Large Shock. “N” → “R” PositionECS004V6
SYMPTOM:
There is large shock when changing from “N” to “R” position.
1.CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to A/T fluid temperature sensor,
line pressure solenoid valve or throttle position sensor circuit?
Ye s o r N o
Ye s > >●Check damaged circuit. Refer to the following items.
Except for Euro-OBD
–AT-396, "LINE PRESSURE SOLENOID VALVE"
–AT- 3 6 2 , "ACCELE RATOR PEDAL POSITION (APP)
SENSOR"
–AT- 3 8 6 , "BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE)"
No >> GO TO 2.
2.CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “D” position. Refer
to AT-268, "
Line Pressure Test" .
OK or NG
OK >> GO TO 3.
NG >>1.Remove control valve assembly. Refer to AT- 4 1 3 ,
"Installation" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve
3.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.
SCIA0769E
SAT494G

AT-318
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
Vehicle Does Not Creep Backward In “R” Position
ECS004V7
SYMPTOM:
Vehicle does not creep backward when selecting “R” position.
1. CHECK A/T FLUID LEVEL
Check A/T fluid level again.
OK or NG
OK >> GO TO 2.
NG >> Refill ATF.
2. CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “R” position. Refer
to AT- 2 6 8 , "
Line Pressure Test" .
OK or NG
OK >> GO TO 3.
NG >> 1. Remove control valve assembly. Refer to AT- 4 1 4 ,
"Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve (AT- 3 9 6 , "LINE PRES-
SURE SOLENOID VALVE" : Except for Euro-OBD)
3. Disassemble A/T.
4. Check the following item:
–Oil pump assembly
SAT638A
SAT494G

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-319
[EXC.F/EURO-OBD]
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3.CHECK STALL TEST
Check stall revolution with selector lever in “1” and “R” positions.
Refer to AT- 2 6 5 , "
Stal l Te st" .
OK or NG
OK >> GO TO 4.
OK in “1” position, NG in “R” position>>1.Remove control valve
assembly. Refer to AT-414, "
ON-VEHICLE SERVICE"
.
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve (AT- 3 9 6 , "LINE PRES-
SURE SOLENOID VALVE" : Except for Euro-OBD)
3. Disassemble A/T.
4. Check the following items:
–Reverse clutch assembly
–High clutch assembly
–Low & reverse brake assembly
NG in both “1” and “R” positions>>GO TO 6.
4.CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 5.
NG >> GO TO 6.
5.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.
SAT493G
SAT171B

AT-320
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
6. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 1 4 , "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve (AT- 2 6 8 , "Line Pressure Test" : Except for Euro-OBD)
3. Disassemble A/T.
4. Check the following items:
–Reverse clutch assembly
–High clutch assembly
–Low & reverse brake assembly
–Forward clutch assembly
–Overrun clutch assembly
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-321
[EXC.F/EURO-OBD]
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Vehicle Does Not Creep Forward In “D”, “2” Or “1” PositionECS004V8
SYMPTOM:
Vehicle does not creep forward when selecting “D”, “2” or “1” position.
1.CHECK A/T FLUID LEVEL
Check A/T fluid level again.
OK or NG
OK >> GO TO 2.
NG >> Refill ATF.
2.CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “D” position. Refer
to AT-268, "
Line Pressure Test" .
OK or NG
OK >> GO TO 3.
NG >>1.Remove control valve assembly. Refer to AT- 4 1 4 ,
"Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve (AT- 3 9 6 , "LINE PRES-
SURE SOLENOID VALVE" )
3. Disassemble A/T.
4. Check the following item:
–Oil pump assembly
3.CHECK STALL TEST
Check stall revolution with selector lever in “D” position. Refer to AT-
265, "Stall Test" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 6.
SAT638A
SAT494G
SAT493G

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-323
[EXC.F/EURO-OBD]
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Vehicle Cannot Be Started From D1ECS004V9
SYMPTOM:
Vehicle cannot be started from D
1 on Cruise test — Part 1.
1.CHECK SYMPTOM
Is Vehicle Does Not Creep Backward In “R” Position OK?
Ye s o r N o
Ye s > > G O T O 2
No >> Go to Vehicle Does Not Creep Backward In “R” Position, AT- 3 1 8 , "
Vehicle Does Not Creep Back-
ward In “R” Position" .
2.CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to vehicle speed sensor·A/T (revolution sensor), shift solenoid valve A, B,
overrun clutch solenoid valve, torque converter clutch solenoid valve or vehicle speed sensor·MTR after cruise
test?
Ye s o r N o
Ye s > >●Check damaged circuit. Refer to the following items.
Except for Euro-OBD
–AT-353, "VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)"
–AT-358, "DTC VEHICLE SPEED SENSOR MTR"
–AT-367, "SHIFT SOLENOID VALVE A"
–AT-372, "SHIFT SOLENOID VALVE B"
–AT-377, "OVERRUN CLUTCH SOLENOID VALVE"
–AT-381, "TORQUE CONVERTER CLUTCH SOLENOID VALVE"
No >> GO TO 3.
3.CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR
Check accelerator pedal position (APP) sensor. Refer to AT- 3 6 2 ,
"ACCELE RATOR PEDAL POSITION (APP) SENSOR" —Except for
Euro-OBD
OK or NG
OK >> GO TO 4.
NG >> Repair or replace accelerator pedal position (APP) sen-
sor.
4.CHECK LINE PRESSURE
Check line pressure at stall point with selector lever in “D” position.
Refer to AT- 2 6 8 , "
Line Pressure Test" .
OK or NG
OK >> GO TO 5.
NG >> GO TO 8.
PBIB0498E
SAT494G

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

LINE PRESSURE SOLENOID VALVE
AT-397
[ALL]
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With CONSULT-II
1. Start engine.
2. Select “SELF-DIAG RESULTS” mode for A/T with CONSULT-II.
3. With brake pedal depressed, shift the lever from “P” → “N” →
“D”→ “N” → “P” positions.
Without CONSULT-II
1. Start engine.
2. With brake pedal depressed, shift the lever from “P” → “N” →
“D”→ “N” → “P” positions.
3. Perform self-diagnosis.
Refer to AT- 2 5 3 , "
SELF-DIAGNOSTIC PROCEDURE (WITH-
OUT CONSULT-II)" .
SAT014K
SCIA0704E