psi SUZUKI GRAND VITARA 2000 2.G Service Workshop Manual

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-15
AMBIENT TEMPERATURE WITHIN 30 ± 35C (85 ± 95F)
CONDITION
MANIFOLD
GAUGEMPa
(kg/cm2)
(psi)DETAILCAUSECORRECTION
LoHi
0.23 ± 0.35
(2.3 ± 3.5)
(33 ± 50)1.4 ± 1.75
(14 ± 17.5)
(200 ± 249)
Normal condition.ÐÐÐÐ
Negative
pressure0.5 ± 0.6
(5 ± 6)
(71.2 ± 85.3)

The low pressure side
reads a negative pressure,
and the high pressure side
reads an extremely low
pressure.

Presence of frost around
tubing to and from receiver /
dryer and expansion valve.
Dust particles or water
droplets are either stuck or
frozen inside expansion
valve, preventing the
refrigerant from flowing.
Clean expansion valve.
Replace it if it cannot be
cleaned.

Replace receiver / dryer.

Evacuate the A / C
system and recharge
with fresh refrigerant.
Normal:
0.23 ± 0.35
(2.3 ± 3.5)
(33 ± 50)

Abnormal:
Negative
pressureNormal:
1.4 ± 1.75
(14 ± 17.5)
(200 ± 249)

Abnormal:
0.69 ± 0.98
(7 ± 10)
(100 ± 142)
During A / C operation, the
low pressure side
sometimes indicates
negative pressure, and
sometimes normal
pressure. Also high
pressure side reading
fluctuates between the
abnormal and normal
pressure.
Expansion valve is frozen
due to moisture in the
system, and temporarily
shuts off the refrigeration
cycle.
Replace expansion
valve.

Replace receiver / dryer.

Evacuate A / C system
and recharge with fresh
refrigerant.
0.05 ± 0.15
(0.5 ± 1.5)
(4.2 ± 21.3)
0.69 ± 0.98
(7 ± 10)
(100 ± 142)

Both low and high pressure
sides indicate low readings.

Continuous air bubbles are
visible through sight glass.

Output air is slightly cold.
Insufficient refrigerant in
system. (Refrigerant
leaking)
Using a gas leak
detector, check for leaks
and repair as necessary.

Recharge refrigerant to a
specified amount.
If the pressure reading is
almost 0 when the
manifold gauges are
attached, check for any
leaks, repair them, and
evacuate the system.
0.4 ± 0.6
(4 ± 6)
(56.9 ± 85.3)

Pressure on low pressure
side is high.

Pressure on high pressure
side is low.

Both pressure becoming
equal right after A / C is
turned OFF.
Internal leak in compressor.
Inspect compressor and
repair or replace as
necessary.
035 045

High pressure reading on
both low and high pressure
sides.

Air bubbles are not visible
even when engine rpm is
lowered.
Overcharged A / C system.

Faulty condenser cooling
operation.

Faulty condenser fan
operation.
Adjust refrigerant to
specified amount.

Clean condenser.

Inspect and repair
condenser fan.
0.35 ± 0.45(3.5 ± 4.5)
(50 ± 64)
1.96 ± 2.45
(20 ± 25)
(285 ± 355)

High pressure reading on
both low and high pressure
sides.

Low pressure side tubing is
not cold when touched.

Air bubbles are visible
through sight glass.
Presence of air in A / C
system. (Improperly
evacuated)
Replace receiver / dryer.

Inspect quantity of
compressor oil and
presence of
contaminants in oil.

Evacuate system and
recharge with fresh
refrigerant.
0.45 ± 0.55
(4.5 ± 5.5)
(64 ± 78)

High pressure reading on
both low and high pressure
sides.

Large amount of frost or
dew on the low pressure
side tubing.
Faulty expansion valve.

Refrigerant flow is not
regulated properly.
Replace expansion
valve.

YH4
GRAND
VITARA
1B-20 AIR CONDITIONING (OPTIONAL)
A / C CONTROLLER VOLTAGE VALUES TABLE
TerminalWireCircuitMeasurement
groundNormal valueCondition
AC1-1B/WController main
power supplyGround to
engine (Fig. B)10 ± 14 voltsIgnition switch ON with engine
stopped
AC1-2B/YController main
groundGround to body
(Fig. A)± 0.4 ± 0 voltEngine running
AC1 4Or
Refrigerant
p
ressure switchGround to
0 ± 1 volt
Refrigerant pressure within 225 kPa
(2.3 kg / cm
2, 32.7 psi) to 2548 kPa
(26 kg / cm
2, 370 psi) with engine
running
AC1-4Orpressure switch
inputengine (Fig. B)
10 ± 14 volts
Refrigerant pressure below
196 kPa (2.0 kg / cm
2, 28 psi) or
above 3140 kPa (32 kg / cm
2, 455 psi)
with engine running
AC1 7G/B
A / C switch input
and / or defroster
Ground to
8 ± 14 volts
Blower fan motor switch and A / C or
defroster position switch (see NOTE)
ON with engine running
AC1-7G/Bposition switch
input (see NOTE)engine (Fig. B)
0 ± 1.5 volts
Blower fan motor switch or A / C or
defroster position switch (see NOTE)
OFF with engine running
AC1 9Gr/W
Signal input from
ECM (A / C ON
Ground to10 ± 14 voltsApprove of A / C ON
AC1-9Gr/W(
permission
signal)engine (Fig. B)0 ± 1 voltA / C ON forbid
AC1-13Y/B
Signal output to
ECM (A / C ON
request signal)Ground to engine
(Fig. B)0 ± 1.5 volts
Blower fan motor switch and A / C or
defroster position switch (see NOTE)
ON with engine running at evaporator
thermistor temperature input more
than approx. 2.5
C (less than 2.5 V
(5840
)) and refrigerant pressure
switch is ON
10 ± 14 voltsExcept the above-mentioned with
engine running
AC1-16P
Compressor
magnet clutch
relay outputGround to engine
(Fig. B)0 ± 1 volt
Blower fan motor switch and A / C or
defroster position switch ON with
engine running at evaporator
thermistor temperature input more
than approx. 2.5
C (less than 2.5 V
(5840
)), refrigerant pressure
switch ON and signal input from ECM
ON
10 ± 14 voltsExcept the above-mentioned with
engine running

YH4
GRAND
VITARA
For CAMI production vehicle
For IWATA production vehicle
1B-28 AIR CONDITIONING (OPTIONAL)
8) After the system has been charged with specified amount of re-
frigerant or when low pressure gauge (1) and high pressure
gauge (2) have indicated about 2 and 15 kg / cm
2 respectively,
close low pressure side vale (3) of manifold gauge set (4). If
equipped with sight glass in this time, look into the sight glass (6)
of condenser outlet pipe (5) and check that there are no bubbles
(7) in it, which means that the system is fully charged.
Low pressure gauge when charged with specified amount:
About 200 ± 300 kPa (2 ± 3 kg / cm
2, 29 ± 43 psi)
(At A / C inlet temperature 30 ± 35
C, 86 ± 95
F)
High pressure gauge when charged with specified amount:
About 1370 ± 1670 kPa (14 ± 17 kg / cm
2, 200 ± 244 psi)
(At A / C inlet temperature 30 ± 35
C, 86 ± 95
F)

YH4
GRAND
VITARA
1. Suction connector
2. O-ring
3. Pressure switch
4. Flow control valve
(Relief valve)
5. Spring
6. Plug
7. Pump cover
8. Cam ring
9. Vane
10. Rotor
11. Snap ring
12. Side plate
13. Pulley (pump shaft)
14. Oil seal
15. Pump body
16. Flow control valve Assembly
3B1-4 POWER STEERING (P / S) SYSTEM
POWER STEERING (P / S) PUMP
The power steering pump is a vane type and is driven by the V-ribbed belt from the crankshaft.
ModelVane type
Hydraulic
pressure
controlRelieved
pressure
6500 kPa (65 kg / cm2, 924 psi)
G16 Type engine . . . . . . . . . . . . . . . . . . . . . .
7000 kPa (70 kg / cm
2, 995 psi)
J20 Type engine . . . . . . . . . . . . . . . . . . . . . . .
7350 kPa (73.5 kg / cm
2, 1045 psi)
H25 Type engine . . . . . . . . . . . . . . . . . . . . . .
ControlFlow control valve
deviceRelief valve
Power steering
pressure switch
Switch turns on (closes) when the
pressure is higher than 2500 ± 3500 kPa
(25 ± 35 kg / cm
2, 356 ± 498 psi).
ECM uses this signal for idle speed control.
Capacity0.70 ± 0.75

(1.48 / 1.23 ± 1.58 / 1.32 US / Imp. pt)
Specified fluidDEXRON
II, DEXRON
III A / T fluid
or equivalent
FLOW CONTROL VALVE
As the discharge rate of the P/S pump increases in proportion to the
pump revolution speed, a flow control valve is added to control it so
that the optimum amount of fluid for steering operation is supplied
according to the engine speed (driving condition).
Described below is its operation at different engine speed.

YH4
GRAND
VITARA
1. P / S fluid reservoir
2. Attachment
3. Gasket4. Union bolt
5. High pressure side
6. Low pressure side
1. P / S fluid reservoir
2. Gauge valve (open)
3. P / S pump4. P / S gear box
5. High pressure side
6. Low pressure side
3B1-10 POWER STEERING (P / S) SYSTEM
HYDRAULIC PRESSURE IN P / S CIRCUIT
HYDRAULIC PRESSURE CHECK
1) After cleaning joint of high pressure hose and P / S pump thor-
oughly, disconnect hose from pump and install special tool (oil
pressure gauge, attachment and hose).
Tighten each flare nut to specified torque.
CAUTION:
Take care not to cause damage to A / C condenser during
service operation, if equipped.
Special Tool
(A): 09915-77410 (Oil pressure gauge)
(B): 09915-77420
2) Check each connection for fluid leakage and bleed air.
Refer to ªAIR BLEEDING PROCEDUREº in this section.
3) With engine idling, turn steering wheel and warm up engine till
temperature of fluid in P/S fluid reservoir rises to 50 ± 60
C (122
± 140
F).
4) Check back pressure by measuring hydraulic pressure with en-
gine idling and hands off steering wheel.
Back pressure: Lower than 1000 kPa (10 kg / cm
2, 142 psi)
When back pressure is higher than specified values, check con-
trol valve and piping for clogging.

YH4
GRAND
VITARA
1. P / S fluid reservoir
2. Gauge valve (shut)
3. Oil pressure gauge
4. P / S pump
5. P / S gear box
1. P / S fluid reservoir
2. Gauge valve (open)
3. Oil pressure gauge
4. P / S pump
5. P / S gear box
POWER STEERING (P / S) SYSTEM 3B1-11
5) Check relief pressure

Increase engine speed to about 1,500 r / min (rpm). Close
gauge valve gradually while watching pressure increase indi-
cated by gauge and take reading of relief pressure (maximum
hydraulic pressure).
Relief pressure:
6200 ± 7000 kPa
(62 ± 70 kg / cm
2, 882 ± 995 psi) G16 Type engine. . . . . . .
6700 ± 7500 kPa
(67 ± 75 kg / cm
2, 953 ± 1067 psi) J20 Type engine. . . . . . .
7050 ± 7850 kPa
(70.5 ± 78.5 kg / cm
2, 1003 ± 1116 psi) H25 Type engine. .

When it is higher than specified values, possible cause is mal-
function of relief valve.

When it is lower than specified values, possible cause is either
failure of P / S pump or settling of relief valve spring.
CAUTION:
Be sure not to close gauge valve for longer than 10 se-
conds.

Next, open gauge valve fully and increase engine speed to
about 1,500 r / min (rpm). Then turn steering wheel to the left
or right fully and take reading of relief pressure.
Relief pressure:
6200 ± 7000 kPa
(62 ± 70 kg / cm
2, 882 ± 995 psi) G16 Type engine. . . . . . .
6700 ± 7500 kPa
(67 ± 75 kg / cm
2, 953 ± 1067 psi) J20 Type engine. . . . . . .
7050 ± 7850 kPa
(70.5 ± 78.5 kg / cm
2, 1003 ± 1116 psi) H25 Type engine. .

When it is higher than specified values, possible cause is mal-
function of relief valve.

When it is lower than specified values, possible cause is failure
in steering gear box. Replace gear box.
CAUTION:
Be sure not to hold steering wheel at fully turned posi-
tion for longer than 10 seconds.
BOOT
STEERING RACK BOOT CHECK
Check boot for crack and damage which, if any, means possibility
of rusty gear, entry of dust or lack of grease. Also, check if any of
such faulty conditions exists.
Check steering rack boot for dent or breakage.
If there is a dent, keep boot in most compressed state for some se-
conds to correct dent.

YH4
GRAND
VITARA
1. Steering wheel
2. Steering wheel pad
3. Screw
1. Steering shaft nut
1. Steering wheel
1. Lugs
2. Grooves
3. Alignment marks
STEERING WHEEL AND COLUMN 3C-3
ON-VEHICLE SERVICE
STEERING WHEEL
REMOVAL
1) Disconnect negative battery cable at battery terminal.
2) Remove steering wheel pad screw.
3) Remove steering wheel pad and disconnect horn harness.
4) Remove steering shaft nut.
5) Make alignment marks on steering wheel and shaft for a guide
during reinstallation.
6) Remove steering wheel with special tool.
Special Tool
(A): 09944-36011
CAUTION:
Do not hammer the end of the shaft. Hammering it will
loosen the plastic shear pins which maintain the column
length and impair the collapsible design of the column.
INSTALLATION
1) Install steering wheel to steering shaft with 2 lugs on combina-
tion switch fitted in two grooves in the back of steering wheel and
also aligning marks on steering wheel and steering shaft.
2) Tighten steering shaft nut to specified torque.
Tightening Torque
(a): 33 N
.m (3.3 kg-m, 23.5 lb-ft)
3) Connect horn harness and install steering wheel pad.
4) Tighten steering wheel pad screw.
5) Connect negative battery cable.

YH4
GRAND
VITARA
1. Steering column hole cover
2. If equipped
1. Steering column cover screw
2. Steering column lower cover
3. Steering column upper cover: Tapping screw
: Standard screw
*
* *
STEERING WHEEL AND COLUMN 3C-5
3) Install steering column upper and lower cover.
4) Tighten steering column cover screws.
CAUTION:
When installing lower cover and upper cover, be careful
so that combination switch lead wire is not caught be-
tween covers.
5) Install steering column hole cover.
6) Install steering wheel to steering column. Refer to ªSTEERING
WHEELº in this section.
7) Connect battery negative cable.
STEERING COLUMN ASSEMBLY
CAUTION:
Once the steering column is removed from the vehicle, the
column is extremely susceptible to damage.
Dropping the column assembly on its end could collapse
the steering shaft or loosen the plastic shear pins which
maintain column length. Leaning on the column assembly
could cause it to bend or deform.
Any of the above damage could impair the column's col-
lapsible design.
When loosening steering column mounting bolts, make
sure that steering column assembly and steering shaft low-
er assembly have been separated. Loosening them with
steering column assembly and steering shaft lower assem-
bly assembled could cause damage to bearing in steering
shaft lower assembly.
NOTE:
When servicing steering column or any column-mounted
component, remove steering wheel. But when removing steer-
ing column simply to gain access to instrument panel compo-
nents, leave steering wheel installed on steering column.
REMOVAL
1) Disconnect negative battery cable at battery terminal.

YH4
GRAND
VITARA
(A)
1
1. Make alignment marks
1. Steering wheel
Turn slowly till coil stops
Turn contact coil back about 2 and
a half turns
1. Align marks
3C1-6 AIR BAG STEERING WHEEL AND COLUMN
STEERING WHEEL
CAUTION:
Removal of the steering wheel allows the contact coil to turn
freely but do not turn the contact coil (on the combination
switch) more than allowable number of turns (about two and
a half turns from the center position clockwise or counter-
clockwise respectively), or coil will break.
REMOVAL
1) Remove driver air bag (inflator) module from steering wheel re-
ferring to ªDRIVER AIR BAG (INFLATOR) MODULEº earlier in
this section.
2) Remove steering shaft nut.
3) Make alignment marks on steering wheel and shaft for a guide
during reinstallation.
4) Remove steering wheel with special tool.
Special Tool
(A): 09944-36011
CAUTION:
Do not hammer the end of the shaft. Hammering it will
loosen the plastic shear pins which maintain the column
length and impair the collapsible design of the column.
CENTERING CONTACT COIL
1) Check that vehicle's wheels (front tires) are set at straight-ahead
position.
2) Check that ignition switch is at ªLOCKº position.
3) Turn contact coil counterclockwise slowly with a light force till
contact coil will not turn any further.
NOTE:
Contact coil can turn about 5 turns at maximum, that is, if
it is at the center position, can turn about two and a half
turns both clockwise and counterclockwise.
4) From the position where contact coil became unable to turn any
further (it stopped), turn it back clockwise about two and a half
rotations and align center mark with alignment mark.

YH4
GRAND
VITARA
1
1. Steering column hole cover 1. Steering column cover screw
2. Steering column upper cover
3. Steering column lower cover: Standard screw
: Tapping screw
*
* *
AIR BAG STEERING WHEEL AND COLUMN 3C1-9
3) Connect all connectors that have been removed in removal.
4) Install steering column upper and lower cover, and then tighten
steering column cover screws.
CAUTION:
When installing lower cover and upper cover, be careful
so that contact coil and combination switch lead wire is
not caught between covers.
5) Install steering column hole cover.
6) Install steering wheel to steering column. Refer to ªSTEERING
WHEELº in this section.
STEERING COLUMN
CAUTION:
Once the steering column is removed from the vehicle, the
column is extremely susceptible to damage.
Dropping the column assembly on its end could collapse
the steering shaft or loosen the plastic shear pins which
maintain column length leaning on the column assembly
could cause it to bend or deform.
Any of the above damage could impair the column's col-
lapsible design.
When loosening steering column mounting bolts, make
sure that steering column assembly and steering shaft low-
er assembly have been separated. Loosening them with
steering column assembly and steering shaft lower assem-
bly assembled could cause damage to bearing in steering
shaft lower assembly.
NOTE:
When servicing steering column or any column-mounted
component, remove steering wheel. But when removing steer-
ing column simply to gain access to instrument panel compo-
nents, leave steering wheel installed on steering column.