2001 NISSAN ALMERA N16 low oil pressure

6. Vehicle Does Not Creep Backward In ªRº
Position
=NJAT0336SYMPTOM:
Vehicle does not creep backward when selecting ªRº position.
1 CHECK A/T FLUID LEVEL
Check A/T fluid level again.
SAT638A
OK or NG
OK©GO TO 2.
NG©Refill ATF.
2 CHECK STALL TEST
Check stall revolution with selector lever in ª1º and ªRº positions.
Refer to ªSTALL TESTº, AT-78.
SAT493G
OK or NG
OK©GO TO 3.
OK in ª1º position, NG in
ªRº position©1. Remove control valve assembly. Refer to ªON-VEHICLE SERVICEº, AT-343.
2. Check the following items:
+Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot
valve and pilot filter)
+Line pressure solenoid valve (AT-174: Except for Euro-OBD/AT-237: Euro-OBD)
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
NG in both ª1º and ªRº
positions©GO TO 6.
TROUBLE DIAGNOSES FOR SYMPTOMS
6. Vehicle Does Not Creep Backward In ªRº Position
AT-297

3 CHECK LINE PRESSURE
Check line pressure at idle with selector lever in ªRº position. Refer to ªLine Pressure Testº, AT-82.
SAT494G
OK or NG
OK©GO TO 4.
NG©1. Remove control valve assembly. Refer to ªON-VEHICLE SERVICEº, AT-343.
2. Check the following items:
+Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot
valve and pilot filter)
+Line pressure solenoid valve (AT-174: Except for Euro-OBD/AT-237: Euro-OBD)
3. Disassemble A/T.
4. Check the following item:
+Oil pump assembly
4 CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
SAT171B
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 con-
nector.
TROUBLE DIAGNOSES FOR SYMPTOMS
6. Vehicle Does Not Creep Backward In ªRº Position (Cont'd)
AT-298

6 DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to ªON-VEHICLE SERVICEº, AT-343.
2. Check the following items:
+Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)
+Line pressure solenoid valve (AT-174: Except for Euro-OBD/AT-237: Euro-OBD)
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.
TROUBLE DIAGNOSES FOR SYMPTOMS
6. Vehicle Does Not Creep Backward In ªRº Position (Cont'd)
AT-299

3 CHECK LINE PRESSURE
Check line pressure at idle with selector lever in ªDº position. Refer to ªLine Pressure Test º, AT-82.
SAT494G
OK or NG
OK©GO TO 4.
NG©1. Remove control valve assembly. Refer to AT-343.
2. Check the following items:
+Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot
valve and pilot filter)
+Line pressure solenoid valve (AT-174: Except for Euro-OBD/AT-237: Euro-OBD)
3. Disassemble A/T.
4. Check the following item:
+Oil pump assembly
4 CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
SAT171B
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 con-
nector.
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Position (Cont'd)
AT-301

6 DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT-343.
2. Check the following items:
+Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)
+Line pressure solenoid valve (AT-174: Except for Euro-OBD/AT-237: Euro-OBD)
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.
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Position (Cont'd)
AT-302

SAT023JB
5. Set manual shaft to ªPº position.
6. Remove PNP switch.
SAT128E
7. Remove oil pan and oil pan gasket.
+Do not reuse oil pan bolts.
8. Check foreign materials in oil pan to help determine cause 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 indi-
cates varnish build up. Varnish can cause valves, servo, and
clutches to stick and may inhibit pump pressure.
+If frictional material is detected, replace radiator after
repair of A/T. Refer to LC-16, section ªRadiatorº.
9. Remove control valve assembly according to the following pro-
cedures.
AAT260A
a. Remove control valve assembly mounting bolts A, B and C.
DISASSEMBLY
AT-355

Control Valve Assembly
COMPONENTS=NJAT0129
SAT033K
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 gasket9. 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 gasket17. Steel ball
18. Control valve upper body
19. Check ball
20. Oil cooler relief valve spring
21. O-ring
22. T/C pressure holding spring
23. Check ball
REPAIR FOR COMPONENT PARTS
Control Valve Assembly
AT-375

DISASSEMBLY=NJAT0130+Disassemble upper, inter and lower bodies.
Bolt length, number and location:
Bolt symbol A B C D E F G
Bolt length ª!º
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
F: Reamer bolt with nut
SAT869J
SAT083F
1. Remove bolts A, D and F, and remove oil strainer from control
valve assembly.
SAT316GA
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.
REPAIR FOR COMPONENT PARTS
Control Valve Assembly (Cont'd)
AT-376