2003 NISSAN ALMERA N16 oil pressure

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-315
[EXC.F/EURO-OBD]
D
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4.CHECK A/T FLUID CONDITION
1. Remove oil pan, refer to AT- 4 0 6 , "
REMOVAL" .
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.
6.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 0 6 , "
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-388, "LINE PRESSURE SOLENOID VALVE" )
3. Disassemble A/T.
4. Check the following items:
–Oil pump assembly
–Torque converter
–Reverse clutch assembly
–High clutch assembly
–Low & reverse brake assembly
–Low one-way clutch
OK or NG
OK >> GO TO 5
NG >> Repair or replace damaged parts.
SAT171B

AT-316
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position
ECS007R6
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 STALL TEST
Check stall revolution with selector lever in “D” position. Refer to AT-
262, "Sta ll Tes t" .
OK or NG
OK >> GO TO 3
NG >> GO TO 6
3. CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “D” position. Refer
to AT- 2 6 5 , "
Line Pressure Test" .
OK or NG
OK >> GO TO 4
NG >> 1. Remove control valve assembly. Refer to AT- 4 0 6 ,
"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 8 8 , "LINE PRES-
SURE SOLENOID VALVE" )
3. Disassemble A/T.
4. Check the following item:
–Oil pump assembly
SAT638A
SAT493G
SAT494G

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-317
[EXC.F/EURO-OBD]
D
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B
AT
4.CHECK A/T FLUID CONDITION
1. Remove oil pan, refer to AT- 4 0 6 , "
REMOVAL" .
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.
6.DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 4 0 6 , "
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-388, "LINE PRESSURE SOLENOID VALVE" )
3. Disassemble A/T.
4. Check the following items:
–Oil pump assembly
–Forward clutch assembly
–Forward one-way clutch
–Low one-way clutch
–Low & reverse brake assembly
–Torque converter
OK or NG
OK >> GO TO 5
NG >> Repair or replace damaged parts.
8. Vehicle Cannot Be Started From D1ECS007R7
SYMPTOM:
Vehicle cannot be started from D
1 on Cruise test — Part 1.
1.CHECK SYMPTOM
Is 6. 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 6. AT-313, "
6. Vehicle Does Not Creep Backward In “R” Position" .
SAT171B

AT-318
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
2. CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to vehicle speed sensor·A/T (rev-
olution sensor), shift solenoid valve A, B or vehicle speed sen-
sor·MTR after cruise test?
Ye s o r N o
Ye s > >●Check damaged circuit. Refer to the following items.
–AT- 3 4 3 , "VEHICLE SPEED SENSOR - A/T (REVO-
LUTION SENSOR)"
–AT- 3 5 7 , "SHIFT SOLENOID VALVE A"
–AT- 3 6 2 , "SHIFT SOLENOID VALVE B"
–AT- 3 4 8 , "DTC VEHICLE SPEED SENSOR MTR"
No >> GO TO 3
3. CHECK THROTTLE POSITION SENSOR*
*: This sensor means accelerator pedal position (APP) sensor.
Refer to AT- 3 5 2 , "
ACCELE RATOR PEDAL POSITION (APP) SEN-
SOR" .
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-265, "
Line Pressure Test" .
OK or NG
OK >> GO TO 5
NG >> GO TO 8
5. CHECK A/T FLUID CONDITION
1. Remove oil pan, refer to AT- 4 0 6 , "
REMOVAL" .
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 6
NG >> GO TO 8
SCIA0770E
MCIB9006E
SAT494G
SAT171B

AT-388
[ALL]
LINE PRESSURE SOLENOID VALVE
LINE PRESSURE SOLENOID VALVE
PFP:31940
DescriptionECS007SJ
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.
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”.
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
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.4 - 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

DISASSEMBLY
AT-419
[ALL]
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4. Remove A/T fluid charging pipe and fluid cooler tube.
5. Set manual shaft to position P.
6. Remove park/neutral position (PNP) switch.
7. Remove oil pan and oil pan gasket.
●Do not reuse oil pan bolts.
8. Check foreign materials in oil pan to help determine causes of
malfunction. If the fluid is very dark, smells burned, or contains
foreign particles, the frictional material (clutches, band) may
need replacement. A tacky film that will not wipe clean indicates
varnish build up. Varnish can cause valves, servo, and clutches
to stick and can inhibit pump pressure.
●If frictional material is detected, replace radiator after
repair of A/T. Refer to LC-16, "RADIATOR".
9. Remove control valve assembly according to the following pro-
cedures.
a. Remove control valve assembly mounting bolts A, B and C.
MCIB9012E
SAT023JA
SAT128E
AAT260A

REPAIR FOR COMPONENT PARTS
AT-439
[ALL]
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Control Valve AssemblyECS007TC
COMPONENTS
1. Solenoid valve assembly 2. O-ring 3. Clip
4. Terminal body 5. Control valve lower body 6. Oil strainer
7. Support plate 8. Lower inter separating gasket 9. Separating plate
10. Lower separating gasket 11. Steel ball 12. Control valve inter body
13. Pilot filter 14. Upper inter separating gasket 15. Separating plate
16. Upper separating gasket 17 Steel ball 18. Control valve upper body
19. Check ball 20. Fluid cooler relief valve spring 21. O-ring
22. T/C pressure holding spring 23. Check ball
SAT868J

AT-440
[ALL]
REPAIR FOR COMPONENT PARTS
DISASSEMBLY
●Disassemble upper, inter and lower bodies.
Bolt length, number and location:
F: Reamer bolt and nut
1. Remove bolts A, D and F, and remove oil strainer from control
valve assembly.
2. Remove solenoid valve assembly and line pressure solenoid
valve from control valve assembly.
●Be careful not to lose the line pressure solenoid valve
spring.
Bolt symbolABC D E F G
Bolt length “ ”
13.5 mm
(0.531 in)58.0 mm
(2.283 in)40.0 mm
(1.575 in)66.0 mm
(2.598 in)33.0 mm
(1.299 in)78.0 mm
(3.071 in)18.0 mm
(0.709 in)
Number of bolts 6 3 6 11 2 2 1
SAT869J
SAT083F
SAT316GA