YH4
GRAND
VITARA
GENERAL INFORMATION 0A-7
GENERAL PRECAUTIONS
The WARNING and CAUTION below describe some general precautions that you should observe when servicing
a vehicle. These general precautions apply to many of the service procedures described in this manual, and they
will not necessarily be repeated with each procedure to which they apply.
WARNING:
Whenever raising a vehicle for service, be sure to follow the instructions under ªVEHICLE LIFTING
POINTSº on SECTION 0A.
When it is necessary to do service work with the engine running, make sure that the parking brake
is set fully and the transmission is in Neutral (for manual transmission vehicles) or Park (for automatic
transmission vehicles). Keep hands, hair, clothing, tools, etc. away from the fan and belts when the
engine is running.
When it is necessary to run the engine indoors, make sure that the exhaust gas is forced outdoors.
Do not perform service work in areas where combustible materials can come in contact with a hot
exhaust system. When working with toxic or flammable materials (such as gasoline and refrigerant),
make sure that the area you work in is well-ventilated.
To avoid getting burned, keep away from hot metal parts such as the radiator, exhaust manifold, tail-
pipe, muffler, etc.
New and used engine oil can be hazardous. Children and pets may be harmed by swallowing new or
used oil. Keep new and used oil and used engine oil filters away from children and pets.
Continuous contact with used engine oil has been found to cause [skin] cancer in laboratory animals.
Brief contact with used oil may irritate skin. To minimize your exposure to used engine oil, wear a
long-sleeve shirt and moisture-proof gloves (such as dishwashing gloves) when changing engine oil.
If engine oil contacts your skin, wash thoroughly with soap and water. Launder any clothing or rags
if wet with oil, recycle or properly dispose of used oil and filters.
Make sure the bonnet is fully closed and latched before driving. If it is not, it can fly up unexpectedly
during driving, obstructing your view and resulting in an accident.
CAUTION:
Before starting any service work, cover fenders, seats and
any other parts that are likely to get scratched or stained dur-
ing servicing. Also, be aware that what you wear (e.g, but-
tons) may cause damage to the vehicle's finish.
When performing service to electrical parts that does not re-
quire use of battery power, disconnect the negative cable of
the battery.
YH4
GRAND
VITARA
MANUAL TRANSMISSION (TYPE 1) 7A-13
1
1. Extension case
2. Select return spring bolt
3. Select return spring (short)
4. Select return spring (long)
5. Guide pin
6. Speed sensor assembly 62,ªAº,(a)
3,ªAº
5,ªAº
5,ªAº
4,ªAº
2,ªAº,(a)
1. Oil seal
2. Extension case
ªBºªAº
1
1
22
EXTENSION CASE (2WD MODEL)
DISASSEMBLY
1) Remove oil seal.
2) Remove select return spring bolts and then springs and guide
pins.
3) Remove speed sensor assembly.
REASSEMBLY
1) Install oil seal.
2) After applying grease, install select guide pins, select return
springs and spring bolts and torque them to specification.
ªAº: Grease 99000-25010
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
After installing, check to make sure that each pin moves smooth-
ly.
3) Install speedometer driven gear case assembly to extension
case.
EXTENSION CASE OIL SEAL (2WD MODEL)
REMOVAL AND INSTALLATION
1) Remove propeller shaft referring to SECTION 4B.
2) Using screwdriver, remove oil seal.
3) Using special tool (A) and plastic hammer, press fit new oil seal
into extension case till oil seal contacts stepped part of extension
case as shown. Be sure to apply grease to oil seal lip.
ªAº: Grease 99000-25010
Special Tool
(A): 09951-16060
4) Clean and inspect sliding portion of propeller shaft front end
(where oil seal contacts) before installation and if even small
dent or scratch exists, correct and clean it again.
Then apply grease inside splines of propeller shaft.
ªBº: Grease 99000-25010
5) Install propeller shaft referring to SECTION 4B.
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 . . . . . . . . . . . . . . . . . . . . . .
YH4
GRAND
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
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.
YH4
GRAND
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
YH4
GRAND
VITARA
CLUTCH 7C1-3
DIAGNOSIS
ConditionPossible CauseCorrection
SlippingImproper clutch pedal free travel.
Worn or oily clutch disc facing.
Warped disc, pressure plate or flywheel
surface.
Weakened diaphragm spring.
Master cylinder piston or seal cup not returning.Bleed air or replace master
cylinder.
Replace disc.
Replace disc, clutch cover or
flywheel.
Replace clutch cover.
Repair master cylinder.
Dragging clutchImproper clutch pedal free travel.
Weakened diaphragm spring, or worn spring tip.
Rusted input shaft splines.
Damaged or worn splines of transmission
input shaft.
Excessively wobbly clutch disc.
Clutch facings broken or dirty with oil.
Fluid leakage.Bleed air or replace master
cylinder.
Replace clutch cover.
Lubricate.
Replace input shaft.
Replace disc.
Replace disc.
Repair or replace.
Clutch vibrationGlazed (glass-like) clutch facings.
Clutch facings dirty with oil.
Release bearing slides unsmoothly on input
shaft bearing retainer.
Wobbly clutch disc, or poor facing contact.
Weakened torsion springs in clutch disc.
Clutch disc rivets loose.
Distorted pressure plate or flywheel surface.
Weakened or loosened engine mounting
bolt or nut.Repair or replace disc.
Replace disc.
Lubricate or replace input
shaft bearing retainer.
Replace disc.
Replace disc.
Replace disc.
Replace clutch cover or flywheel.
Retighten or replace mounting.
Noisy clutchWorn or broken release bearing.
Input shaft front bearing worn down.
Excessive rattle of clutch disc hub.
Cracked clutch disc.
Pressure plate and diaphragm spring rattling.Replace release bearing.
Replace input shaft bearing.
Replace disc.
Replace disc.
Replace clutch cover.
Grabbing clutchClutch disc facings soaked with oil.
Clutch disc facings excessively worn.
Rivet heads showing out of facing.
Weakened torsion springs.Replace disc.
Replace disc.
Replace disc.
Replace disc.