ABS NISSAN ALMERA TINO 2001 Service Repair Manual

Control System=NLAT0014OUTLINENLAT0014S01The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.
SWITCHES AND SENSORS
cTCM
cACTUATORS
PNP switch
Throttle position sensor
Closed throttle position switch
Wide open throttle position
switch
Engine speed signal
CVT fluid temperature sensor
CVT fluid pressure sensor
Primary speed sensor
Secondary speed sensor
Stop lamp switch
SPORT mode switch
ABS control unitShift control
Line pressure control
Lock-up control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
control
Duet-EA control
On board diagnosisStep motor
Torque converter clutch solenoid
valve
Line pressure solenoid valve
SPORT indicator lamp
OVERALL SYSTEM
Control System
AT-15

TCM FUNCTION=NLAT0014S03The function of the TCM is to:
+Receive input signals sent from various switches and sensors.
+Determine required line pressure, shifting point and lock-up operation.
+Send required output signals to the step motor and the respective solenoids.
INPUT/OUTPUT SIGNAL OF TCMNLAT0014S04
Switches, sensors and actuators Function
InputPNP switch Detects select lever position and sends a signal to TCM.
Throttle position sensor Detects throttle valve position and sends a signal to TCM.
Closed throttle position switch Detects throttle valve's fully-closed position and sends a signal to TCM.
Wide open throttle position switchDetects a throttle valve position of greater than 1/2 of full throttle and
sends a signal to TCM.
Engine speed signal From ECM.
CVT fluid temperature sensor Detects transmission fluid temperature and sends a signal to TCM.
CVT fluid pressure sensor Detects transmission fluid pressure and sends a signal to TCM.
Primary speed sensor Detects primary pulley rpm and sends a signal to TCM.
Secondary speed sensor Detects secondary pulley rpm and sends a signal to TCM.
Stop lamp switchSends a signal to the TCM relaying the operation condition of the brake
pedal.
SPORT mode switchSends a signal to the TCM relaying the operation condition of the SPORT
mode switch.
ABS control unit Sends a signal to the TCM operation condition of the ABS.
OutputStep motor Regulates pulley position in relation to a signal sent from TCM.
Line pressure solenoid valveRegulates (or decreases) line pressure suited to driving conditions in rela-
tion to a signal sent from TCM.
Torque converter clutch solenoid
valveRegulates (or decreases) lock-up pressure suited to driving conditions in
relation to a signal sent from TCM.
SPORT indicator lamp Shows the operation condition of the SPORT mode switch.
OVERALL SYSTEM
Control System (Cont'd)
AT-17

Item DisplayMonitor item
Description Remarks
TCM input
signalsMain sig-
nals
Selector lever position SLCT LVR POSI
ÐX+Selector lever position
data, used for computa-
tion by TCM, is dis-
played.+A specific value used for
control is displayed if fail-
safe is activated due to
error.
Vehicle speed VEHICLE
SPEED
[km/h] or [mph]ÐX+Vehicle speed data,
used for computation
by TCM, is displayed.Ð
Throttle position THROTTLE
POSI
[/8]ÐX+Throttle position data,
used for computation
by TCM, is displayed.+A specific value used for
control is displayed if fail-
safe is activated due to
error.
Line pressure duty LINE PRES
DTY
[%] Ð X+Control value of line
pressure solenoid
valve, computed by
TCM from each input
signal, is displayed.Ð
Torque converter clutch
solenoid valve dutyTCC S/V DUTY
[%]
ÐX+Control value of torque
converter clutch sole-
noid valve, computed
by TCM from each
input signal, is dis-
played.Ð
Self-diagnosis display
lamp
(SPORT indicator lamp)PAT MONI
LAMP
[ON/OFF]ÐX+Control status of
SPORT indicator lamp
is displayed.Ð
Line pressure sensor LINE PRES-
SURE SEN [V] X Ð+Line pressure sensor
signal voltage is dis-
played.Ð
Primary pulley speed sen-
sorI/P PULLY SPD
[rpm]
XX+Primary pulley speed
computed from signal
of primary pulley speed
sensor is displayed.Ð
Secondary pulley speed
sensorO/P PULLY SPD
[rpm]
ÐÐ+Secondary pulley speed
computed from signal
of secondary speed
sensor is displayed.Ð
Stop lamp switch BRAKE SW
[ON/OFF] X Ð+ON/OFF position signal
of stop lamp switch is
displayed.Ð
ABS signal ABS SIGNAL
[ON/OFF]
XÐ+ABS operation signal
(ON/OFF) from ABS
control unit is dis-
played.Ð
CVT ratio CVT RATIO [Ð]
ÐX+Real CVT ratio oper-
ated TCM is displayed.Ð
Step PLY CONT
STEP [step]ÐX+Step motor position is
displayed.Ð
X: Applicable
Ð: Not applicable
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONEURO-OBD
CONSULT-II (Cont'd)
AT-25

Item DisplayMonitor item
Description Remarks
TCM input
signalsMain sig-
nals
Line pressure sensor LINE PRES
SEN [V] X Ð+CVT fluid pressure sen-
sor signal voltage is
displayed.Ð
Primary pulley speed sen-
sorI/P PULLY SPD
[rpm]
XX+Primary pulley speed
computed from signal
of primary pulley speed
sensor is displayed.
Secondary pulley speed
sensorO/P PULLY SPD
[rpm]
ÐÐ+Secondary pulley speed
computed from signal
of secondary speed
sensor is displayed.Ð
Stop lamp switch BRAKE SW
[ON/OFF] X Ð+ON/OFF position signal
of stop lamp switch is
displayed.Ð
ABS signal ABS SIGNAL
[ON/OFF]
XÐ+ABS operation signal
(ON/OFF) from ABS
control unit is dis-
played.Ð
CVT ratio CVT RATIO [Ð]
ÐX+Real CVT ratio oper-
ated TCM is displayed.Ð
Step PLY CONT
STEP [step]ÐX+Step motor position is
displayed.Ð
X: Applicable
Ð: Not applicable
SAT250K
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(
WITH CONSULT-II)NLAT0245S091. If the ignition switch stays ªONº after repair work, be sure to
turn ignition switch ªOFFº once. Wait for at least 3 seconds and
then turn it ªONº again.
2. Turn CONSULT-II ªONº, and touch ªCVTº.
SAT252K
3. Touch ªSELF-DIAG RESULTSº.
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION
EXCEPT FOR EURO-OBD
CONSULT-II (Cont'd)
AT-34

Terminal
No.Wire color Item ConditionJudgement stan-
dard (Approx.)
11 P UStep motor A Within 2 seconds after key switch ªONº, the time measurement by
using the pulse width measurement function (Hi level) of CON-
SULT-II.
+CONSULT-II cable connected to data link connector.
+This inspection cannot be measured by circuit tester.30.0 msec
12 L/W Step motor B10.0 msec
13 OR/BSPORT indicator
lamp
When SPORT indicator lamp illumi-
nates0V
When SPORT indicator lamp does
not illuminateBattery voltage
15 *1 PU (EURO-OBD-II) Ð Ð
16 Y/PUClosed throttle
position switch
(in throttle posi-
tion switch)When releasing accelerator pedal
after warming up engine.
Refer to step 1 to 6 of
ªPreparationº, ªTCM Self-diagnostic
Procedure (No Tools)º, AT-28 Ð
EURO-OBD/AT-35 Ð Except for
EURO-OBD.Battery voltage
When depressing accelerator pedal
after warming up engine.
Refer to step 1 to 6 of
ªPreparationº, ªTCM Self-diagnostic
Procedure (No Tools)º, AT-28 Ð
EURO-OBD/AT-35 Ð Except for
EURO-OBD.0V
17 LGWide open
throttle position
switch
(in throttle posi-
tion switch)When depressing accelerator pedal
more than half-way after warming
up engine.Battery voltage
When releasing accelerator pedal
after warming up engine.0V
18 BR ABS control unit
When driving slowly.Change 0V to
battery voltage
19 G/W Power source
Same as No. 10
20 L/Y Step motor CWithin 2 seconds after key switch ªONº, the time measurement by
using the pulse width measurement function (Hi level) of CON-
SULT-II.
+CONSULT-II cable connected to data link connector.
+This inspection cannot be measured by circuit tester.30.0 msec
21 P/L Step motor D10.0 msec
22 PSport mode
switch
When SPORT mode switch in ªONº
position.0V
When SPORT mode switch in
ªOFFº position.10V
23 SB ABS control unit
When ABS operates. 0V
When ABS does not operate. 5.6 - 10.0V
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTION
TCM Terminals and Reference Value (Cont'd)
AT-59

ComponentsNLAT0320
SAT245K
CAUTION:
+Install key interlock cable in such a way that it will not be
damaged by sharp bends, twists or interference with adja-
cent parts.
+After installing key interlock cable to control device, make
sure that casing cap and bracket are firmly secured in
their positions.
SAT246K
RemovalNLAT03211. Unlock slider by squeezing lock tabs on slider from adjuster
holder and remove interlock rod from cable.
KEY INTERLOCK CABLE
Components
AT-202

Wheel Hub and Knuckle
COMPONENTS=NLAX0008
NAX006
1. Drive shaft
2. Knuckle
3. Baffle plate (where fitted)
4. ABS sensor5. Wheel bearing assembly
6. Snap ring
7. Hub bolt
8. Wheel hub9. Wheel bearing lock nut
10. Cotter pin
11. Brake disc
12. Wheel nut
REMOVALNLAX0009CAUTION:
Before removing the front axle assembly, disconnect the ABS
wheel sensor from the assembly. Then move it away from the
front axle assembly area.
Failure to do so may result in damage to the sensor wires and
the sensor becoming inoperative.
SFA090A
1. Remove wheel bearing lock nut.
FRONT AXLE
Wheel Hub and Knuckle
AX-5

SBR686C
Precautions
PRECAUTIONSNLAX0022+When installing each rubber part, final tightening must be
carried out under unladen condition* with tires on ground.
*: Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
+Use flare nut wrench when removing or installing brake
tubes.
+After installing removed suspension parts, check wheel
alignment.
+Do not jack up at the trailing arm and lateral link.
+Always torque brake lines when installing.
Preparation
SPECIAL SERVICE TOOLSNLAX0032
Tool number
Tool nameDescription
KV40104710
Drift
NT474
Install ABS sensor rotor
a: 76.3 mm (3.004 in) dia.
b: 67.9 mm (2.673 in) dia.
ST3072000
Drift
NT115
Install ABS sensor rotor
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.
COMMERCIAL SERVICE TOOLSNLAX0024
Tool name Description
1 Flare nut crowfoot
2 Torque wrench
NT360
Removing and installing brake piping
a: 10 mm (0.39 in)
REAR AXLE
Precautions
AX-21

Wheel Hub
COMPONENTSNLAX0028
NAX001
1. Spindle
2. Baffle plate
3. ABS sensor rotor4. Wheel hub bearing
5. Wheel bearing lock nut6. Hub cap
7. ABS sensor
REMOVALNLAX0029CAUTION:
+Before removing the rear wheel hub assembly, disconnect
the ABS wheel sensor from the assembly. Then move it
away from the hub assembly. Failure to do so may result
in damage to the sensor wires and the sensor becoming
inoperative.
+Wheel hub bearing does not require maintenance. If any of
the following symptoms are noted, replace wheel hub
bearing assembly.
1) Growling noise is emitted from wheel hub bearing dur-
ing operation.
2) Wheel hub bearing drags or turns roughly. This occurs
when turning hub by hand after bearing lock nut is tight-
ened to specified torque.
REAR AXLE
Wheel Hub
AX-23

SRA711A
1. Remove brake caliper assembly.
2. Remove wheel bearing lock nut.
3. Remove brake rotor (models with disk brake) or brake drum
(models with drum brakes).
4. Remove wheel hub bearing from spindle.
CAUTION:
Do not disconnect brake hose from caliper.
+Suspend caliper assembly with wire so as not to stretch
brake hose.
+Be careful not to depress brake pedal, or piston will pop
out.
Make sure brake hose is not twisted.
ARA082
5. Remove the sensor rotor using suitable puller, drift and bea
ring replacer.
SAX014
INSTALLATIONNLAX0030+With vehicles equipped with ABS, press-fit ABS sensor rotor
into wheel hub bearing using a drift.
Do not reuse ABS sensor rotor. When installing, replace it
with a new one.
SRA734AB
+Press-fit ABS sensor rotor as far as the location shown in fig-
ure at left.
Height“h”:
12.5 - 13.5 mm (0.492 - 0.531 in)
REAR AXLE
Wheel Hub (Cont’d)
AX-24