lock NISSAN PATROL 2000 Electronic User Guide

4. Set parking brake and block wheels.
+Continue to depress brake pedal fully while line pressure
test is being performed at stall speed.
5. Start engine and measure line pressure at idle and stall
speed.
+When measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure:
Refer to SDS, AT-1207.
JUDGEMENT OF LINE PRESSURE TEST
Judgement Suspected parts
At idleLine pressure is low in all
positions.+Oil pump wear
+Control piston damage
+Pressure regulator valve or plug sticking
+Spring for pressure regulator valve damaged
+A/T fluid pressure leakage between oil strainer and pressure regulator valve
+Clogged strainer
Line pressure is low in par-
ticular position.+Fluid pressure leakage between manual valve and particular clutch
+For example, line pressure is:
Ð Low in ªRº and ª1º positions, but
Ð Normal in ªDº and ª2º positions.
Then, fluid leakage exists at or around low and reverse brake circuit.
Refer to ªCLUTCH AND BAND CHARTº, AT-1025.
Line pressure is high.+Mal-adjustment of throttle position sensor
+A/T fluid temperature sensor damaged
+Line pressure solenoid valve sticking
+Short circuit of line pressure solenoid valve circuit
+Pressure modifier valve sticking
+Pressure regulator valve or plug sticking
+Open in dropping resistor circuit
At stall speedLine pressure is low.+Mal-adjustment of throttle position sensor
+Line pressure solenoid valve sticking
+Short circuit of line pressure solenoid valve circuit
+Pressure regulator valve or plug sticking
+Pressure modifier valve sticking
+Pilot valve sticking
SAT513G
SAT493G
TROUBLE DIAGNOSIS Ð Basic Inspection
Line Pressure Test (Cont'd)
AT-1045

3. CRUISE TEST
+Check all items listed in Parts 1 through 3.
With CONSULT-II
+Using CONSULT-II, conduct a cruise test and record the
result.
+Print the result and ensure that shifts and lock-ups take place
as per Shift Schedule.
CONSULT-II Setting Procedure
1. Turn ignition switch OFF.
2. Connect CONSULT-II to data link connector, which is located
in instrument lower panel on driver side.
3. Turn ignition switch ON.
4. Touch ªSTARTº.
5. Touch ªA/Tº.
6. Touch ªDATA MONITORº.
SAT601J
SAT165K
SAT586J
SAT014K
SAT971J
TROUBLE DIAGNOSIS Ð Basic Inspection
Road Test (Cont'd)
AT-1050

VA
Does A/T shift from D3to D4at the speci-
fied speed?
Read gear position,
throttle position and
vehicle speed.
Specified speed when shifting from
D
3to D4:
Refer to Shift schedule, AT-1206.
Yes
cNo
Go to ª14. A/T Does Not
Shift: D
3®D4º, AT-1108.
Does A/T perform lock-up at the specified
speed?
Read vehicle speed, throt-
tle position when lock-up
duty becomes 94%.
Specified speed when lock-up
occurs:
Refer to Shift schedule, AT-1206.
Yes
cNo
Go to ª15. A/T Does Not
Perform Lock-upº,
AT-1109.
Does A/T hold lock-up condition for more
than 30 seconds?
Yes
cNo
Go to ª16. A/T Does Not
Hold Lock-up Conditionº,
AT-1110.
1. Release accelerator pedal.
2. Is lock-up released when accelerator
pedal is released?
Yes
cNo
Go to ª17. Lock-up Is Not
Releasedº, AT-1110.
1. Decelerate vehicle by applying foot
brake lightly.
2. Does engine speed return to idle
smoothly when A/T is shifted from D
4to D3?
Read gear position and
engine speed.
Yes
cNo
Go to ª18. Engine Speed
Does Not Return To Idle
(Light Braking D
4®D3)º,
AT-1111.
1. Stop vehicle.
2. Go to ªCruise test Ð Part 2º, AT-1055.
SAT402H
SAT403H
.
.
.
.
.
.
TROUBLE DIAGNOSIS Ð Basic Inspection
Road Test (Cont'd)
AT-1054

bON vehiclecbOFF vehiclec
Reference page (AT- )1041,
112611251064,
1066
108210441070,
11481072,
10841076,
10741079,
11241124 11241133,
11441161,
11651167,
11771167,
11751171,
11371184
Reference page (AT- )
Numbers are arranged in order of probability.
Perform inspections starting with number one and
work up. Circled numbers indicate that the trans-
mission must be removed from the vehicle.
Fluid level
Control linkage
PNP switch
Throttle (accelerator) position sensor (Adjustment)
Revolution sensor and vehicle speed sensor
Engine speed signal
Engine idling speed
Line pressure
Control valve assembly
Shift solenoid valve A
Shift solenoid valve B
Line pressure solenoid valve
Torque converter clutch solenoid valve
Overrun clutch solenoid valve
A/T fluid temperature sensor
Accumulator N-D
Accumulator 1-2
Accumulator 2-3
Accumulator 3-4 (N-R)
Ignition switch and starter
Torque converter
Oil pump
Reverse clutch
High clutch
Forward clutch
Forward one-way clutch
Overrun clutch
Low one-way clutch
Low & reverse brake
Brake band
Parking pawl components
1111Failure to change from ªD3º to ª2º when changing
lever into ª2º position..712....654..3............V9..V8.
Ð Gear change from ª2
1ºtoª22º in ª2º position. . . 1........................... .
1112 Engine brake does not operate in ª1º position. .2134 . . . 65 . . . 7............
V8.V9..
Ð Gear change from ª1
1ºtoª12º in ª1º position. . 2 1........................... .
Ð Does not change from ª1
2ºtoª11º in ª1º position. ..1.2. . .43. . .5............V6.V7..
ÐLarge shock changing from ª1
2ºtoª11º in ª1º posi-
tion.........1...................V2..
Ð Transmission overheats. 1 . . 3 . . 2 4 6 . . 5........
V14V7V8V9V11.V12.V13V10.
ÐATF shoots out during operation.
White smoke emitted from exhaust pipe during
operation.1.....................
V2V3V5.V6.V7V4.
Ð Offensive smell at fluid charging pipe. 1...................
V2V3V4V5V7.V8.V9V6.
Ð Torque converter is not locked up. . .3124.68. . .7.5.....
V9......... .
Ð Torque converter clutch piston slip 1 . . 2 . . . 3 6 . . 5 4.......
V7......... .
1109 Lock-up point is extremely high or low. . . . 1 2 . . . 4 . . . 3................. .
ÐA/T does not shift to ªD
4º when driving with over-
drive control switch ªONº...213..864...57...........V10..V9.
ÐEngine is stopped at ªRº, ªDº, ª2º and ª1º posi-
tions.1.......543.2................. .
TROUBLE DIAGNOSIS Ð General Description
Symptom Chart (Cont'd)
AT-1059

TCM Terminals and Reference Value
PREPARATION
+Measure voltage between each terminal and terminalV25or
V48by following ªTCM INSPECTION TABLEº.
TCM HARNESS CONNECTOR TERMINAL LAYOUT
TCM INSPECTION TABLE
(Data are reference values.)
Terminal
No.Wire color Item ConditionJudgement
standard (Approx.)
1 G/YLine pressure
solenoid valve
When releasing accelerator
pedal after warming up engine.1.5 - 3.0V
When depressing accelerator
pedal fully after warming up
engine.0V
2 BR/YLine 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
3 G/ORTorque converter
clutch solenoid
valve
When A/T performs lock-up. 8 - 15V
When A/T does not perform lock-
up.0V
4Ð Ð
ÐÐ
5* PU/W DT1
Refer to EC section. 6* P/B DT2
7* P DT3
8Ð Ð Ð Ð
9* L/OR DT4 Refer to EC section.
10 G/OR Power sourceWhen turning ignition switch to
ªONº.Battery voltage
When turning ignition switch to
ªOFFº.0V
*: These terminals are connected to the ECM.
SAT216J
SAT217J
TROUBLE DIAGNOSIS Ð General Description
AT-1060

Vehicle Speed SensorzA/T (Revolution
sensor)
DESCRIPTION
The revolution sensor detects the revolution of the out put shaft
parking pawl lock gear and emits a pulse signal. The pulse sig-
nal is sent to the TCM which converts it into vehicle speed.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
: VHCL SPEED SENzA/T
TCM does not receive the proper volt-
age signal from the sensor.+Harness or connectors
(The sensor circuit is open or
shorted.)
+Revolution sensor
: 1st judgement flicker
SELF-DIAGNOSIS CODE CONFIRMATION
PROCEDURE
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
1) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for A/T with
CONSULT-II.
3) Drive vehicle under the following conditions:
Selector lever in ªDº position, vehicle speed higher
than 30 km/h (19 MPH), throttle opening greater than
1/8 of the full throttle position and driving for more than
5 seconds.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle under the following conditions:
Selector lever in ªDº position, vehicle speed higher
than 30 km/h (19 MPH), throttle opening greater than
1/8 of the full throttle position and driving for more than
5 seconds.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT218JA
SAT014K
SAT806H
TROUBLE DIAGNOSIS FOR VHCL SPEED SENzA/T
AT-1064

Torque Converter Clutch Solenoid Valve
DESCRIPTION
The torque converter clutch solenoid valve is activated, with the
gear in D
4, by the TCM in response to signals sent from the
vehicle speed and throttle (accelerator) position sensors. Torque
converter clutch piston operation will then be controlled.
Lock-up operation, however, is prohibited when A/T fluid tem-
perature is too low.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ...Check items
(Possible cause)
: T/C CLUTCH SOL/V
TCM detects an improper voltage drop
when it tires to operate the solenoid
valve.+Harness or connectors
(The solenoid circuit is open or
shorted.)
+T/C clutch solenoid valve
: 7th judgement flicker
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
Monitor item Condition Specification
Torque converter clutch solenoid valve
dutyLock-up ªOFFº
¯
Lock-up ªONºApproximately
4%
¯
Approximately
94%
SELF-DIAGNOSIS CODE CONFIRMATION
PROCEDURE
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
1) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for A/T with
CONSULT-II.
3) Drive vehicle in D
1®D2®D3®D4®D4lock-up
position.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine.
2) Drive vehicle in D
1®D2®D3®D4®D4lock-up
position.
3) Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-1029.
SAT342HA
SAT014K
SAT818H
TROUBLE DIAGNOSIS FOR T/C CLUTCH SOL/V
AT-1076

15. A/T Does Not Perform Lock-up
SYMPTOM:
A/T does not perform lock-up at the specified speed.
Does self-diagnosis show damage to
torque converter clutch solenoid valve
after cruise test?
No
cYes
Check torque converter
clutch solenoid valve.
Refer to AT-1076.
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 control valve. Refer to
AT-1124.
2. Check following items:
+Torque converter clutch control valve
+Torque converter relief valve
+Torque converter clutch solenoid valve
+Pilot valve
+Pilot filter
OK
cNG
Repair or replace dam-
aged parts.
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
SAT844H
SAT222JA
.
.
. .
.
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-1109

16. A/T Does Not Hold Lock-up Condition
SYMPTOM:
A/T does not hold lock-up condition for more than 30 sec-
onds.
Does self-diagnosis show damage to
engine speed signal circuit after cruise
test?
No
cYes
Check engine speed sig-
nal. Refer to AT-1082.
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:
+Torque converter clutch
control valve
+Pilot valve
+Pilot filter
3. Disassemble A/T.
4. Check torque converter
and oil pump assembly.
1. Remove control valve assembly. Refer
to AT-1124.
2. Check the following items:
+Torque converter clutch control valve
+Pilot valve
+Pilot filter
OKOKb
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
17. Lock-up Is Not Released
SYMPTOM:
Lock-up is not released when accelerator pedal is released.
Does ªTCM INPUT SIGNALSº in
Data Monitor show damage to
closed throttle position switch cir-
cuit?
------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------
Does self-diagnosis show damage
to closed throttle position switch
circuit?
No
cYes
Check closed throttle posi-
tion switch. Refer to
AT-1091.
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
SAT835H
SAT171B
SAT146BA
.
.
. .
.
.
.
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-1110

Description
+The mechanical key interlock mechanism also operates as a
shift lock:
With the key switch turned to ªONº, the selector lever cannot
be shifted from ªPº (parking) to any other position unless the
brake pedal is depressed.
With the key removed, the selector lever cannot be shifted
from ªPº to any other position.
The key cannot be removed unless the selector lever is
placed in ªPº.
+The shift lock and key interlock mechanisms are controlled
by the ON-OFF operation of the shift lock solenoid and by the
operation of the rotator and slider located inside the key
cylinder, respectively.
SAT914J
TROUBLE DIAGNOSES Ð A/T Shift Lock System
AT-1116