sensor NISSAN PATROL 2000 Electronic Service Manual

18. Engine Speed Does Not Return To Idle
(Light Braking D
4®D3)
SYMPTOM:
+Engine speed does not smoothly return to idle when A/T
shifts from D
4to D3.
+Vehicle does not decelerate by engine brake when turn-
ing overdrive control switch OFF.
+Vehicle does not decelerate by engine brake when shift-
ing A/T from ªDº to ª2º position.
Does self-diagnosis show damage to
overrun clutch solenoid valve circuit after
cruise test?
No
cYes
Check overrun clutch sole-
noid valve. Refer to
AT-1074.
Check accelerator position sensor. Refer
to EC section [TROUBLE DIAGNOSIS
FOR ªTHROTTLE (ACCEL) POSI SENº
(DTC 43)].
OK
cNG
Repair or replace throttle
position sensor.
1. Remove oil pan.
2. Check A/T fluid condition.
OK
cNG
1. Remove control valve
assembly. Refer to
AT-1124.
2. Check the following
items:
+Overrun clutch control
valve
+Overrun clutch reducing
valve
+Overrun clutch solenoid
valve
3. Disassemble A/T.
4. Check the following
items:
+Overrun clutch assembly
+Oil pump assembly
1. Remove control valve assembly. Refer
to AT-1124.
2. Check the following items:
+Overrun clutch control valve
+Overrun clutch reducing valve
+Overrun clutch solenoid valve
OK
OK
b
Check again.
OK
cNG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
SAT836H
SAT222JA
SAT171B
.
.
.
. .
.
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-1111

19. Vehicle Does Not Start From D1
SYMPTOM:
Vehicle does not start from D1on Cruise test Ð Part 2.
Does self-diagnosis show damage to
vehicle speed sensorzA/T (revolution
sensor), shift solenoid valve A, B or
vehicle speed sensorzMTR after cruise
test?
No
cYes
Check damaged circuit.
Refer to AT-1064, 1066,
1070 or 1072.
Check again.
OK
cNG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
Go to 8. Vehicle Cannot Be Started From
D
1, AT-1102.
SAT832H
. .
.
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-1112

20. A/T Does Not Shift: D2®D1When
Depressing Accelerator Pedal
SYMPTOM:
A/T does not shift from D2to D1when depressing accelera-
tor pedal fully at the specified speed.
Are 9. Vehicle Does Not Creep Backward
In ªRº Position and 10. Vehicle Does Not
Creep Forward In ªDº, ª2º Or ª1º Position
OK?
Yes
cNo
Go to 9. Vehicle Does Not
Creep Backward In ªRº
Position and 10. Vehicle
Does Not Creep Forward In
ªDº, ª2º Or ª1º Position,
AT-1103, 1104.
Does ªTCM INPUT SIGNALº show
damage to PNP switch circuit?
------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------
Does self-diagnosis show damage
to PNP switch circuit?
No
cYes
Check PNP switch.
Refer to AT-1091.
Check vehicle speed sensorzA/T (revolu-
tion sensor) and vehicle speed
sensorzMTR. Refer to AT-1064, 1066.
OK
cNG
Repair or replace vehicle
speed sensorzA/T (revolu-
tion sensor) and vehicle
speed sensorzMTR.
Check accelerator position sensor. Refer
to EC section [TROUBLE DIAGNOSIS
FOR ªTHROTTLE (ACCEL) POSI SENº
(DTC 43)].
OK
cNG
Repair or replace throttle
position sensor.
1. Remove oil pan.
2. Check A/T fluid condition.
OK
cNG
1. Remove control valve.
Refer to AT-1124.
2. Check the following
items:
+Shift valve A
+Shift solenoid valve A
+Pilot valve
+Pilot filter
3. Disassemble A/T.
4. Check the following
items:
+Servo piston assembly
+Brake band
+Oil pump assembly
1. Remove control valve. Refer to
AT-1124.
2. Check the following items:
+Shift valve A
+Shift solenoid valve A
+Pilot valve
+Pilot filter
OK
b
OK
Check again.
OK
cNG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
SAT146BA
SAT222JA
SAT171B
.
.
.
.
.
.
.
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-1113

Control Valve Assembly and Accumulators
REMOVAL
1. Drain ATF.
2. Remove oil pan and gasket.
3. Remove A/T fluid temperature sensor if necessary.
4. Remove oil strainer.
5. Remove control valve assembly by removing fixing bolts and
disconnecting harness connector.
Bolt length and location
Bolt symbol!mm (in)
VA33 (1.30)
VB45 (1.77)
6. Remove solenoids and valves from valve body if necessary.
7. Remove terminal cord assembly if necessary.
8. Remove accumulator
VA,VB,VCandVDby applying com-
pressed air if necessary.
+Hold each piston with rag.
9. Reinstall any part removed.
+Always use new sealing parts.
SAT260J
SAT073BA
SAT353B
SAT074BA
ON-VEHICLE SERVICE
AT-1124

Revolution Sensor Replacement
1. Remove revolution sensor from A/T.
2. Reinstall any part removed.
+Always use new sealing parts.
Rear Oil Seal Replacement
1. Remove transfer case from vehicle. Refer to TF section
(ªRemovalº, ªREMOVAL AND INSTALLATIONº).
2. Remove rear oil seal.
3. Install rear oil seal.
+Apply ATF before installing.
4. Reinstall any part removed.
Parking Pawl Components Inspection
1. Remove front and rear propeller shafts. Refer to PD section
(ªRemovalº, ªPROPELLER SHAFTº).
2. Remove transfer case from vehicle. Refer to TF section
(ªRemovalº, ªREMOVAL AND INSTALLATIONº).
3. Remove select rod.
4. Support A/T assembly with a jack.
5. Remove rear engine mounting member from body. Refer to
EM section (ªENGINE REMOVALº).
6. Remove adapter case from transmission case.
7. Replace parking pawl components if necessary.
8. Reinstall any part removed.
+Always use new sealing parts.
PNP Switch Adjustment
1. Remove manual control linkage from manual shaft of A/T
assembly.
2. Set manual shaft of A/T assembly in ªNº position.
3. Loosen PNP switch fixing bolts.
4. Insert pin into adjustment holes in both PNP switch and
manual shaft of A/T assembly as near vertical as possible.
5. Reinstall any part removed.
6. Check continuity of PNP switch. Refer to AT-1095.
SAT261J
SAT035EB
SAT262J
SAT228B
SAT081B
ON-VEHICLE SERVICE
AT-1125

Removal
1. Remove battery negative terminal.
2. Remove air breather hose.
3. Remove heat insulator and exhaust front tube.
4. Remove fluid charging pipe from A/T assembly.
5. Remove oil cooler pipe from A/T assembly.
6. Plug up openings such as the fluid charging pipe hole, etc.
7. Remove front and rear propeller shafts. Refer to PD section
(ªRemovalº, ªPROPELLER SHAFTº).
8. Remove center brake control cable from center brake. Refer
to BR section (ªPARKING BRAKE CONTROLº).
9. Remove transfer control linkage and transfer harness con-
nectors from transfer. Refer to TF section (ªRemovalº,
ªREMOVAL AND INSTALLATIONº).
10. Remove A/T control linkage from A/T assembly.
11. Disconnect A/T solenoid, PNP switch and revolution sensor
harness connectors.
12. Remove starter motor. Refer to EL section (ªSTARTING
SYSTEMº).
13. Remove bolts securing torque converter to drive plate.
+Remove the bolts by turning crankshaft.
SAT263J
SAT166K
SAT167K
REMOVAL AND INSTALLATION
AT-1127

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

18. Remove adapter case.
a. Remove adapter case from transmission case.
b. Remove adapter case gasket from transmission case.
c. Remove oil seal from adapter case.
+Do not remove oil seal unless it is to be replaced.
d. Remove revolution sensor from adapter case.
e. Remove O-ring from revolution sensor.
19. Remove output shaft and parking gear.
a. Remove rear snap ring from output shaft.
b. Slowly push output shaft all the way forward.
+Do not use excessive force.
c. Remove snap ring from output shaft.
SAT755I
SAT756I
SAT305B
SAT960A
SAT957A
DISASSEMBLY
AT-1139

Pilot filter
+Check to make sure that filter is not clogged or damaged.
Torque converter clutch solenoid valve
+Check that filter is not clogged or damaged.
+Measure resistance. Refer to ªCOMPONENT INSPECTIONº,
AT-1078.
Line pressure solenoid valve
+Check that filter is not clogged or damaged.
+Measure resistance. Refer to ªCOMPONENT INSPECTIONº,
AT-1086.
3-unit solenoid assembly (Shift solenoid valves A
and B and overrun clutch solenoid valve)
+Measure resistance of each solenoid. Refer to ªCOMPO-
NENT INSPECTIONº, AT-1071, 1073, 1075.
A/T fluid temperature sensor and A/T fluid
temperature switch
+Measure resistance. Refer to ªCOMPONENT
INSPECTIONº, AT-1081.
ASSEMBLY
1. Install upper and lower bodies.
a. Place oil circuit of upper body face up. Install steel balls in
their proper positions.
SAT676A
SAT149G
SAT095B
SAT096BA
SAT671A
REPAIR FOR COMPONENT PARTS
Control Valve Assembly (Cont'd)
AT-1151

b. Install reamer bolts from bottom of upper body and install
separate gaskets.
c. Place oil circuit of lower body face up. Install orifice check
spring, orifice check valve and pilot filter.
d. Install lower separate gaskets and separator plates on lower
body.
e. Install and temporarily tighten support plates, fluid tempera-
ture sensor and tube brackets.
f. Temporarily assemble lower and upper bodies, using reamer
bolt as a guide.
+Be careful not to dislocate or drop steel balls, orifice
check spring, orifice check valve and pilot filter.
SAT681A
SAT682A
SAT197B
SAT198B
REPAIR FOR COMPONENT PARTS
Control Valve Assembly (Cont'd)
AT-1152