oil pressure SUZUKI GRAND VITARA 2000 2.G Service Owner's Manual
[x] Cancel search | Manufacturer: SUZUKI, Model Year: 2000, Model line: GRAND VITARA, Model: SUZUKI GRAND VITARA 2000 2.GPages: 801, PDF Size: 12.15 MB
Page 404 of 801
YH4
GRAND
VITARA
7B1-2 AUTOMATIC TRANSMISSION (4 A / T)
DTC P0753 Shift Solenoid-A (#1)
Electrical 7B1-50. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0758 Shift Solenoid-B (#2)
Electrical 7B1-50. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1875 4WD Low Switch Circuit
Malfunction 7B1-52. . . . . . . . . . . . . . . . . . . . . . .
Line Pressure Test 7B1-54. . . . . . . . . . . . . . . . . .
Stall Test 7B1-55. . . . . . . . . . . . . . . . . . . . . . . . . .
Road Test 7B1-56. . . . . . . . . . . . . . . . . . . . . . . . .
Manual Road Test 7B1-57. . . . . . . . . . . . . . . . . .
Time Lag Test 7B1-57. . . . . . . . . . . . . . . . . . . . . .
Engine Brake Test 7B1-58. . . . . . . . . . . . . . . . . .
ªPº Range Test 7B1-58. . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE7B1-59 . . . . . . . . . . . . . . . .
MAINTENANCE SERVICE 7B1-59. . . . . . . . . . . .
Fluid Level 7B1-59. . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Change 7B1-60. . . . . . . . . . . . . . . . . . . . . .
Oil Cooler Hoses 7B1-61. . . . . . . . . . . . . . . . . . .
A / T THROTTLE CABLE 7B1-61. . . . . . . . . . . . . . .
MANUAL SELECTOR ASSEMBLY 7B1-62. . . . .
SELECT CABLE 7B1-63. . . . . . . . . . . . . . . . . . . . . TRANSMISSION RANGE SWITCH 7B1-64. . . . .
A/T OUTPUT SPEED SENSOR 7B1-64. . . . . . . .
O / D CUT SWITCH 7B1-64. . . . . . . . . . . . . . . . . . .
SOLENOID VALVES 7B1-64. . . . . . . . . . . . . . . . . .
THROTTLE POSITION SENSOR 7B1-66. . . . . . .
POWER / NORMAL CHANGE SWITCH 7B1-66. .
OIL COOLER PIPES 7B1-67. . . . . . . . . . . . . . . . . .
BRAKE INTERLOCK SYSTEM 7B1-68. . . . . . . . .
Shift Lock Solenoid Control 7B1-68. . . . . . . . . .
Shift Lock Solenoid Control Operations 7B1-68
Shift Lock (Solenoid) Manual Release 7B1-69.
System Inspection 7B1-69. . . . . . . . . . . . . . . . . .
KEY INTERLOCK CABLE 7B1-71. . . . . . . . . . . . .
DISMOUNTING OF TRANSMISSION
(WITH TRANSFER IF EQUIPPED) 7B1-74. . . .
REMOUNTING 7B1-77. . . . . . . . . . . . . . . . . . . . . . .
UNIT REPAIR7B1-78 . . . . . . . . . . . . . . . . . . . . . . . . .
TIGHTENING TORQUE
SPECIFICATIONS7B1-78 . . . . . . . . . . . . . . . . . . . .
REQUIRED SERVICE MATERIALS7B1-79 . . . . . .
SPECIAL TOOLS7B1-79 . . . . . . . . . . . . . . . . . . . . . .
Page 409 of 801
YH4
GRAND
VITARA
Engine
Vehicle speed
sensor
Throttle position
sensor
ECT sensor
Cruise control
module
(if equipped)Torque converter Planetary gear
Final gear
reduction unit
Oil pump
Shift and TCC
solenoid valvesClutch and brake
Control valve
ªO / D OFFº lamp
ªPOWERº lamp
MILTransmission range
switch
O / D cut switch
P / N change switch
Transfer 4L switch
(if equipped)
CMP sensor Powertrain (engine) control module
Power transmission
Fluid pressure circuit
Electric signalInput speed sensor Brake pedal switch
Output speed sensor
AUTOMATIC TRANSMISSION (4 A / T) 7B1-7
ELECTRONIC SHIFT CONTROL SYSTEM
The gear ratio change in ªDº or ª2º range and torque converter clutch operation are controlled by Powertrain (En-
gine) Control Module.
Page 428 of 801
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VITARA
7B1-26 AUTOMATIC TRANSMISSION (4 A / T)
Operation
VISUAL INSPECTION
Visually check following parts and systems.
INSPECTION ITEM
REFERRING SECTION
A / T fluid ± ± ± ± ± level, leakage, color
A / T fluid hoses ± ± ± ± ± disconnection, looseness, deterioration
Throttle (accelerator) cable ± ± ± ± ± play, installation
A / T throttle cable ± ± ± ± ± play, installation
A / T select cable ± ± ± ± ± installation, operation
Engine oil ± ± ± ± ± level, leakage
Engine coolant ± ± ± ± ± level, leakage
Battery ± ± ± ± ± fluid level, corrosion of terminal
Connectors of electric wire harness ± ± ± ± ± disconnection, friction
Fuses ± ± ± ± ± burning
Parts ± ± ± ± ± installation, damage
Bolt ± ± ± ± ± looseness
Other parts that can be checked visually
Also check following items at engine start, if possible.
ªO / D OFFº lamp
ªPOWERº lamp
Malfunction indicator lamp
Charge warning lamp
Engine oil pressure warning lamp
Engine coolant temp. meter
Other parts that can be checked visually
Section 0B
Section 7B1
Section 6E1 / 6E2
Section 7B1
Section 7B1
Section 0B
Section 0B
Section 6 / 6-1 / 7B1
Section 8
Section 7B1
Section 7B1
Section 6 / 6-1
Section 6H
Section 8 (Section 6A1 / 6A2 /
6A4 for pressure check)
Page 430 of 801
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7B1-28 AUTOMATIC TRANSMISSION (4 A / T)
Transmission fluid Running condition Running condition Gear shift
TROUBLE DIAGNOSIS TABLE 1
ConditionPossible CauseCorrection
TCC does not operateBrake pedal (stop lamp) switch or its
circuit faulty (H25 engine only)
4WD low switch or its circuit faulty
Engine coolant temp. sensor or its
circuit faulty
Cruise control signal circuit faulty
(if equipped)DIAGNOSTIC FLOW TABLE A-1
Gear does not change
to 4thO / D cut switch or its circuit faulty
4WD low switch or its circuit faulty
Engine coolant temp. sensor or its
circuit faulty
Cruise control signal circuit faulty
(if equipped)DIAGNOSTIC FLOW TABLE A-2
TROUBLE DIAGNOSIS TABLE 2
ConditionPossible CauseCorrection
Low fluid pressureClogged oil pump strainer
Malfunction of pressure regulator valveWash strainer.
Overhaul valve body.
High fluid pressurePressure regulator valveOverhaul valve body.
Unable to run in all
rangeRegulator valve stickReplace.
Clogged oil strainerWash strainer.
Seized or broken planetary gearRepair or replace.
Faulty manual valveReplace.
Poor 1st speed run-
ning or excessive
slippage in ªDº or
ª2ºFaulty 1±2 shift valveReplace.
Poor 1±2 shift, ex-
ili
Regulator valve stickingReplace.
cessive slippage1±2 shift valve stickingReplace.
Shift solenoid valve-B stickingReplace.
Intermediate coast modulator valve stick-
ingReplace.
Poor 2±3 shift, ex-
ili
2±3 shift valve stickingReplace.
cessive slippageShift solenoid valve-A stickingReplace.
Poor start or surg-
ing in ªDº rangeRegulator valve stickingReplace.
Page 431 of 801
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VITARA
AUTOMATIC TRANSMISSION (4 A / T) 7B1-29
Gear shift Transmission fluid Running condition
ConditionPossible CauseCorrection
Poor 3±4 shift, ex-3±4 shift valve stickingReplace.
cessive slippageShift solenoid valve-B stickingReplace.
Excessive shock onRegulator valve stickingReplace.
1±2 shiftFaulty accumulator, second brake pistonReplace.
Excessive shock onRegulator valve stickingReplace.
2±3 shiftFaulty accumulator, direct clutch pistonReplace.
Excessive shock on
3±4 shiftRegulator valve stickingReplace.
Non operate lock-TCC (Lock-up) control valve stickingReplace.
up systemSolenoid valve No.2 (TCC solenoid valve)
stickingReplace.
TROUBLE DIAGNOSIS TABLE 3
ConditionPossible CauseCorrection
Low fluid pressureLeakage from oil pressure circuitOverhaul.
Unable to run in all
rangeWear in oil pumpReplace.
Seizure in oil pumpReplace.
Fluid pressure leakage to over drive clutch
due to wear of oil pump bushingReplace.
Faulty in torque converterReplace.
Page 432 of 801
YH4
GRAND
VITARA
7B1-30 AUTOMATIC TRANSMISSION (4 A / T)
Running condition Gear shift Abnormal
noise
ConditionPossible CauseCorrection
Poor 1st speed run-
ning or excessive
slippage in ªDº or ª2ºFluid pressure leakage from forward clutch
due to wear or breakage of O/D case seal
ringReplace.
Overdrive clutch slippingReplace.
Unable to run or ex-
cessive slippage in
ªLº rangeFluid pressure leakage of forward clutch
due to wear or breakage of O/D case seal
ringReplace.
Reverse brake disc slippingReplace.
Broken brake piston O-ringReplace.
Unable to run or ex-
cessive slippage in
ªRº rangeFluid pressure leakage to direct clutch due
to wear or breakage of center support seal
ringReplace.
Worn direct clutchReplace.
Poor 1±2 shift, ex-
cessive slippageFluid pressure leakage to overdrive clutch
due to wear or breakage of O/D case seal
ringReplace.
Faulty second brakeReplace.
Broken O-ring of second brake pistonReplace.
Faulty second coast brake (in ª2º range)Replace.
Poor 2±3 shift, ex-
cessive slippageFluid pressure leakage to overdrive clutch
due to wear or breakage of O/D case seal
ringReplace.
Worn direct clutch bushingReplace.
Direct clutch slippingReplace.
Foreign material caught in direct clutch pis-
ton check ballReplace.
Poor start or surging
in ªDº rangeFluid pressure leakage of forward clutch
due to wear or breakage of O/D case seal
ringReplace.
Malfunction of forward clutchReplace.
Poor 3±4 shift, ex-
ili
Faulty overdrive brakeReplace.
cessive slippageFaulty overdrive clutchReplace.
Poor start or judder-
ing in ªRº rangeFluid pressure leakage of direct clutch due
to wear or breakage of oil center support
seal ringReplace.
Worn direct clutchReplace.
Excessive shock on
1± 2 shiftFaulty one-way clutchReplace.
Non operate lock-up
systemFaulty torque converterReplace.
Abnormal noise in
ªPº or ªNº rangeWorn oil pumpReplace.
SCAN TOOL DATA-Refer to SECTION 6 / 6-1.
INSPECTION OF PCM AND ITS CIRCUIT-Refer to SECTION 6 / 6-1.
WIRE HARNESS AND CONNECTORS-Refer to SECTION 6 / 6-1.
Page 456 of 801
YH4
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VITARA
1. Fluid pressure check hole
2. Oil pan
1. Oil pan
2. Exhaust pipe
7B1-54 AUTOMATIC TRANSMISSION (4 A / T)
LINE PRESSURE TEST
Purpose of this test is to check operating conditions of each part by
measuring fluid pressure in fluid pressure line. Line pressure test
requires following conditions.
Automatic fluid is at normal operating temperature (70 to 80C /
158 ± 176F).
Fluid is filled to proper level (between FULL HOT and LOW HOT
on dipstick).
1) Apply parking brake securely and place checks against wheels.
2) Attach oil pressure gauge to fluid pressure check hole in trans-
mission case.
Special Tool
(A): 09925-37810
CAUTION:
After attaching oil pressure gauge, check that not fluid
leakage exists.
3) Depress foot brake fully, run engine at idle and stall and then
check fluid pressure in ªDº or ªRº range.
CAUTION:
Do not continue running engine at stall speed longer than
5 seconds.
G16 Engine
Engine runningLine pressuregg
modeªDº rangeªRº range
At idle speed3.9 ± 4.4 kg / cm2
55 ± 63 psi
5.1 ± 5.7 kg / cm2
73 ± 81 psi
At stall speed11.7 ± 13.2 kg / cm2
166 ± 188 psi
14.2 ± 16.7 kg / cm2
202 ± 237 psi
J20 Engine
Engine runningLine pressuregg
modeªDº rangeªRº range
At idle speed3.8 ± 4.3 kg / cm2
54 ± 61 psi
5.3 ± 5.9 kg / cm2
75 ± 84 psi
At stall speed9.7 ± 11.2 kg / cm2
138 ± 159 psi
12.9 ± 15.5 kg / cm2
183 ± 220 psi
H25 Engine
Engine runningLine pressuregg
modeªDº rangeªRº range
At idle speed3.9 ± 4.4 kg / cm2
55 ± 63 psi
6.6 ± 7.2 kg / cm2
94 ± 102 psi
At stall speed11.3 ± 12.7 kg / cm2
161 ± 181 psi
14.7 ± 22.7 kg / cm2
209 ± 323 psi
Page 457 of 801
YH4
GRAND
VITARA
AUTOMATIC TRANSMISSION (4 A / T) 7B1-55
Check resultPossible cause
Line pressure higher
than standard level in
each rangeMalfunctioning regulator valve
Malfunctioning throttle valve
Maladjusted A / T throttle cable
Line pressure lower than
standard level in each
rangeDefective O/D clutch
Defective oil pump
Malfunctioning throttle valve
Malfunctioning regulator value
Maladjusted A / T throttle cable
Line pressure lower than
standard level only in ªDº
rangeFluid leakage from forward clutch
Defective O/D clutch
Leakage from ªDº range fluid pressure cir-
cuit
Line pressure lower than
standard level only in ªRº
rangeFluid leakage from direct clutch
Defective O/D clutch
Fluid leakage from reverse brake
Fluid leakage from ªRº range fluid circuit
Tightening torque of transmission case plug:
17 N.m (1.7 kg-m, 12.0 lb-ft)
STALL TEST
This test is to check overall performance of automatic transmission
and engine by measuring stall speed at ªDº and ªRº ranges. Be sure
to perform this test only when transmission fluid is at normal operat-
ing temperature and its level is between FULL and LOW marks.
CAUTION:
Do not run engine at stall more than 5 seconds continu-
ously, for fluid temperature may rise excessively high.
After performing stall test, be sure to leave engine running
at idle for longer than 30 seconds before another stall test.
1) Apply parking brake and block wheels.
2) Install tachometer.
3) Start engine with select lever shifted to ªPº.
4) Depress brake pedal fully.
5) Shift select lever to ªDº and depress accelerator pedal fully while
watching tachometer. Read engine rpm quickly when it has be-
come constant (stall speed).
6) Release accelerator pedal immediately after stall speed is
checked.
7) In the same way, check stall speed in ªRº range.
Page 481 of 801
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GRAND
VITARA
AUTOMATIC TRANSMISSION (4 A / T) 7B1-79
09925-37810
Oil pressure gauge09927-56010
Gear stopper
(only for G16 / J20)09931-76030
16 / 14 pin DLC
(OBD-II adapter) cable
09931-76011
SUZUKI scan tool (Tech 1A) kit1. Storage case
2. Operator's manual
3. Tech 1A
4. DLC cable
5. Test lead / probe
6. Power source cable
7. DLC cable adapter
8. Self±test adapterMass storage cartridge
REQUIRED SERVICE MATERIALS
MATERIALRECOMMENDED
SUZUKI PRODUCTUSE
A / T fluidAn equivalent of DEXRON-IIIAutomatic transmission
Parts lubrication when installing
Lithium greaseSUZUKI SUPER GREASE A
(99000±25010)Cable ends
SealantSUZUKI BOND NO.1215
(99000-31110)Flywheel bolts
SPECIAL TOOLS
Page 483 of 801
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VITARA
1. Crankshaft
2. Flywheel
3. Clutch disc
4. Pressure plate
5. Clutch cover
6. Diaphragm spring
7. Release bearing
8. Input shaft bearing
9. Input shaft
10. Operating cylinder
11. Clutch housing
12. Release fork
7C1-2 CLUTCH
The clutch is a diaphragm-spring clutch of a dry single
disc type. The diaphragm spring is of a tapering-finger
type, which is a solid ring in the outer diameter part,
with a series of tapered fingers pointing inward.
The disc, carrying torsional coil springs, is positioned
on the transmission input shaft with an involute spline
fit.
The clutch cover is secured to the flywheel, and car-
ries the diaphragm spring in such a way that the pe-
ripheral edge part of the spring pushes on the pres-
sure plate against the flywheel (with the disc in be-
tween), when the clutch release bearing is held back.
This is the engaged condition of the clutch.Depressing the clutch pedal causes the release bear-
ing to advance and pushes on the tips of the tapered
fingers of the diaphragm spring. When this happens,
the diaphragm spring pulls the pressure plate away
from the flywheel, thereby interrupting the flow of
drive from flywheel through clutch disc to transmis-
sion input shaft.
GENERAL DESCRIPTION