check transmission fluid NISSAN PATROL 2000 Electronic Repair Manual

AUTOMATIC TRANSMISSION
SECTION
AT
CONTENTS
PREPARATION AND PRECAUTIONS............... 1003
Special Service Tools ...................................... 1003
Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº ... 1004
Precautions ...................................................... 1004
Service Notice or Precautions ......................... 1006
OVERALL SYSTEM............................................ 1007
A/T Electrical Parts Location ........................... 1007
Circuit Diagram ................................................ 1008
Wiring Diagram Ð A/T Ð ................................ 1009
Cross-sectional View ....................................... 1022
Hydraulic Control Circuits ................................ 1023
Shift Mechanism .............................................. 1024
Control System ................................................ 1026
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION..................................................... 1028
Self-diagnosis................................................... 1028
Diagnosis by CONSULT-II ............................... 1034
TROUBLE DIAGNOSIS Ð Introduction............ 1036
Introduction ...................................................... 1036
Diagnostic Worksheet ...................................... 1037
Work Flow ........................................................ 1040
TROUBLE DIAGNOSIS Ð Basic Inspection.... 1041
A/T Fluid Check ............................................... 1041
Stall Test .......................................................... 1041
Line Pressure Test........................................... 1044
Road Test ........................................................ 1046
TROUBLE DIAGNOSIS Ð General
Description.......................................................... 1057
Symptom Chart ................................................ 1057
TCM Terminals and Reference Value ............. 1060
TROUBLE DIAGNOSIS FOR VHCL SPEED
SENzA/T................................................................ 1064Vehicle Speed SensorzA/T (Revolution
sensor) ............................................................. 1064
TROUBLE DIAGNOSIS FOR VHCL SPEED
SENzMTR.............................................................. 1066
Vehicle Speed SensorzzMTR ............................ 1066
TROUBLE DIAGNOSIS FOR THROTTLE POSI
SEN...................................................................... 1068
Accelerator Position Sensor ............................ 1068
TROUBLE DIAGNOSIS FOR SHIFT
SOLENOID/V A.................................................... 1070
Shift Solenoid Valve A ..................................... 1070
TROUBLE DIAGNOSIS FOR SHIFT
SOLENOID/V B.................................................... 1072
Shift Solenoid Valve B ..................................... 1072
TROUBLE DIAGNOSIS FOR OVERRUN
CLUTCH S/V........................................................ 1074
Overrun Clutch Solenoid Valve ....................... 1074
TROUBLE DIAGNOSIS FOR T/C CLUTCH
SOL/V................................................................... 1076
Torque Converter Clutch Solenoid Valve ........ 1076
TROUBLE DIAGNOSIS FOR BATT/FLUID
TEMP SEN........................................................... 1079
A/T Fluid Temperature Sensor and TCM
Power Source .................................................. 1079
TROUBLE DIAGNOSIS FOR ENGINE SPEED
SIG....................................................................... 1082
Engine Speed Signal ....................................... 1082
TROUBLE DIAGNOSIS FOR LINE PRESSURE
S/V........................................................................ 1084
Line Pressure Solenoid Valve ......................... 1084
TROUBLE DIAGNOSIS FOR CONTROL UNIT
(RAM), CONTROL UNIT (ROM)......................... 1087
Description ....................................................... 1087

AT

A/T Fluid Check
FLUID LEAKAGE CHECK
1. Clean area suspected of leaking. Ð for example, mating
surface of converter housing and transmission case.
2. Start engine, apply foot brake, place selector lever in ªDº
position and wait a few minutes.
3. Stop engine.
4. Check for fresh leakage.
FLUID CONDITION CHECK
Fluid color Suspected problem
Dark or black with burned odor Wear of frictional material
Milky pinkWater contamination Ð Road water
entering through filler tube or breather
Varnished fluid, light to dark brown
and tackyOxidation Ð Over or under filling, Ð
Overheating
FLUID LEVEL CHECK
Refer to MA section (ªChecking A/T Fluidº, ªCHASSIS AND
BODY MAINTENANCEº).
Stall Test
STALL TEST PROCEDURE
1. Check A/T and engine fluid levels. If necessary, add.
2. Drive vehicle for approx. 10 minutes or until engine oil and
ATF reach operating temperature.
ATF operating temperature:
50 - 80ÉC (122 - 176ÉF)
3. Set parking brake and block wheels.
4. Install a tachometer where it can be seen by driver during
test.
+It is good practice to put a mark on point of specified
engine rpm on indicator.
5. Start engine, apply foot brake, and place selector lever in ªDº
position.
6. Accelerate to wide open throttle gradually while applying foot
brake.
7. Quickly note the engine stall revolution and immediately
release throttle.
+During test, never hold throttle wide open for more than
5 seconds.
Stall revolution:
2,480 - 2,680 rpm
SAT801A
SAT638A
SAT647B
SAT513G
SAT514G
TROUBLE DIAGNOSIS Ð Basic Inspection
AT-1041

14. Support A/T and transfer assembly with a jack.
15. Remove engine rear mounting member from body and A/T
assembly. Refer to EM section (ªENGINE REMOVALº).
16. Remove bolts securing A/T assembly to engine.
+Secure torque converter to prevent it from dropping.
+Secure A/T assembly with transfer to a jack.
17. Lower A/T assembly with transfer.
Installation
+Drive plate runout
CAUTION:
Do not allow any magnetic materials to contact the ring gear
teeth.
Maximum allowable runout:
Refer to EM section (ªInspectionº, CYLINDER
BLOCKº).
If this runout is out of specification, replace drive plate with
ring gear.
+When connecting torque converter to transmission, measure
distance ªAº to be certain that they are correctly assembled.
Distance ªAº:
Refer to SDS, AT-1210.
+Install converter to drive plate.
+After converter is installed to drive plate, rotate crank-
shaft several turns and check to be sure that transmis-
sion rotates freely without binding.
+Tighten bolts securing transmission.
Bolt No.Tightening torque
Nzm (kg-m, ft-lb)Bolt length ª!º
mm (in)
V183 - 113 (8.4 - 11.6, 61 - 83) 65 (2.56)
V229 - 39 (2.9 - 4.0, 21 - 28) 63 (2.48)
V329 - 39 (3.0 - 4.0, 22 - 29) 43 (1.69)
+Reinstall any part removed.
+Check fluid level in transmission.
+Move selector lever through all positions to be sure that
transmission operates correctly.
With parking brake applied, rotate engine at idling. Move
selector lever through ªNº to ªDº, to ª2º, to ª1º and to ªRº
positions. A slight shock should be felt by hand gripping
selector each time transmission is shifted.
+Perform road test. Refer to ªROAD TESTº, AT-1046.
SAT801C
SAT977H
SAT017B
SAT266JB
SAT638A
REMOVAL AND INSTALLATION
Removal (Cont'd)
AT-1128

6. Place transmission into Tool with the control valve facing up.
7. Check foreign materials in oil pan to help determine cause of
malfunction. If the fluid is very dark, smells burned, or con-
tains 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 may inhibit pump pressure.
+If frictional material is detected, replace radiator after
repair of A/T. Refer to LC section (ªRadiatorº, ªENGINE
COOLING SYSTEMº).
8. Remove torque converter clutch solenoid valve and A/T fluid
temperature sensor connectors.
+Be careful not to damage connector.
9. Remove oil strainer.
a. Remove oil strainer from control valve assembly.
Then remove O-ring from oil strainer.
b. Check oil strainer screen for damage.
SAT522GA
SAT171B
SAT024BA
SAT008B
SAT025B
DISASSEMBLY
AT-1134

e. Install control valve assembly on transmission case.
f. Install connector tube brackets and tighten bolts
VAandVB.
+Check that terminal assembly does not catch.
Bolt symbol!mm (in)
VA33 (1.30)
VB45 (1.77)
g. Install O-ring on oil strainer.
+Apply petroleum jelly to O-ring.
h. Install oil strainer on control valve.
i. Securely fasten terminal harness with clips.
j. Install torque converter clutch solenoid valve and A/T fluid
temperature sensor connectors.
SAT353B
SAT221B
SAT009B
SAT010B
ASSEMBLY
Assembly (2) (Cont'd)
AT-1202

13. Install oil pan.
a. Attach a magnet to oil pan.
b. Install new oil pan gasket on transmission case.
c. Install oil pan and bracket on transmission case.
+Always replace oil pan bolts as they are self-sealing
bolts.
+Before installing bolts, remove traces of sealant and oil
from mating surface and thread holes.
+Tighten four bolts in a criss-cross pattern to prevent
dislocation of gasket.
d. Tighten drain plug.
14. Install PNP switch.
a. Check that manual shaft is in ª1º position.
b. Temporarily install PNP switch on manual shaft.
c. Move manual shaft to ªNº.
d. Tighten bolts while inserting 4.0 mm (0.157 in) dia. pin ver-
tically into locating holes in PNP switch and manual shaft.
15. Install torque converter.
a. Pour ATF into torque converter.
+Approximately 2 liters (1-3/4 Imp qt) of fluid are required
for a new torque converter.
+When reusing old torque converter, add the same
amount of fluid as was drained.
SAT011B
SAT601B
SAT299I
SAT014B
SAT428DA
ASSEMBLY
Assembly (2) (Cont'd)
AT-1203

Chassis and Body Maintenance
Abbreviations: R = Replace, I = Inspect: Correct or replace if necessary, L = Lubricate, T = Tighten, [ ] = At the specified mileage only
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Perform on a kilometer basis, but on an annual basis
when driving less than 15,000 km (9,000 miles) per
year.km x 1,000 15 30 45 60 75 90
(miles x 1,000) (9) (18) (27) (36) (45) (54)
Months 12 24 36 48 60 72
Underhood and under vehicleReference
pages
Headlamp aimingIIIIII Ð
When alignment (if necessary, balance & rotate wheels)IIIIII Ð
Brake pads, rotors & other brake componentsHIIIIII Ð
Foot brake, parking brake & clutch (for free play, stroke & operation)IIIIII Ð
Brake booster vacuum hoses, connections & check valve I I I Ð
Brake & clutch, systems and fluid (for level and leaks)IIIIII Ð
Brake fluidHRRRÐ
Power steering fluid and lines (for level and leaks)IIIIII Ð
Supplemental air bag systems See NOTE (1)RS-1007
Ventilation air filterHRRRÐ
Manual transmission oil (Inspect for leaks. Replace if leaks are found.)IIIII[R] Ð
Automatic transmission fluid (for level and leaks)HIIIIII Ð
Greasing point of propeller shaft See NOTE (2)LLLLLL Ð
Transfer fluid and limited-slip differential (LSD) gear oil (for
level & leaks or replace)HSee NOTE (3) I I I R I I Ð
Drive shafts & steering damperHIIIIII Ð
Front wheel bearing greaseHIRIRIR Ð
Front axle joint in knuckle flangeLLLÐ
Free-running hub greaseHIIIIII Ð
Body mounting bolts & nutsTTTTTT Ð
Steering gear & linkage, axle & suspension parts, propeller shaft & exhaust systemHIIIIII Ð
Body corrosion See NOTE (4)Ð
NOTE: (1) Inspect after 10 years, then every 2 years.
(2) The propeller shaft should be re-greased after being immersed in water.
(3) Including differential gear with differential lock.
(4) Inspect once per year.
HMaintenance items with ªHº should be performed more frequently according to ªMaintenance under severe driv-
ing conditionsº.
PERIODIC MAINTENANCE
MA-1003

Chassis and Body Maintenance
Abbreviations: R = Replace, I = Inspect: Correct or replace if necessary, L = Lubricate, T = Tighten
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Perform on a kilometer
basis onlykm x 1,000 10 20 30 40 50 60 70 80 90 100 110 120
(miles x 1,000) (6) (12) (18) (24) (30) (36) (42) (48) (54) (60) (66) (72)
Underhood and under vehicleReference
pages
Headlamp aimingIIIIÐ
When alignment (if necessary, balance & rotate wheels)IIIIÐ
Brake pads, rotors & other brake componentsHIIIIÐ
Foot brake, parking brake & clutch (for free play, stroke & operation)IIIIÐ
Brake booster vacuum hoses, connections & check valve I I Ð
Brake & clutch, systems and fluid (for level and leaks)IIIIÐ
Brake fluidHRRÐ
Power steering fluid and lines (for level and leaks)IIIIÐ
Supplemental air bag systems See NOTE (1)RS-1007
Ventilation air filterHRRRRÐ
Manual transmission oil (Inspect for leaks. Replace if leaks are found.) I I R I Ð
Automatic transmission fluid (for level and leaks)HIIIIÐ
Greasing point of propeller shaft See NOTE (2)LLLLÐ
Transfer fluid and limited-slip differential (LSD) gear oil
(for level & leaks or replace)HSee NOTE (3) I R I R Ð
Drive shafts & steering damperHIIIIÐ
Front wheel bearing greaseHIRIRÐ
Front axle joint in knuckle flangeLLÐ
Free-running hub greaseHIIIIÐ
Body mounting bolts & nutsTTTTÐ
Steering gear & linkage, axle & suspension parts, propeller shaft & exhaust systemHIIIIÐ
Body corrosion See NOTE (4)Ð
NOTE: (1) Inspect after 10 years, then every 2 years.
(2) The propeller shaft should be re-greased after being immersed in water.
(3) Including differential gear with differential lock.
(4) Inspect once per year.
HMaintenance items with ªHº should be performed more frequently according to ªMaintenance under severe driv-
ing conditionsº.
PERIODIC MAINTENANCE
MA-1006