electrical SUZUKI GRAND VITARA 1999 2.G Service Workshop Manual

SUZUKI
────────────
SQ 416-420-625
────────────
M.Y 1998 - 2005
SERVICE MANUAL
VOLUME 1
- CHASSIS SECTIONS
- ELECTRICAL
- BODY SECTIONS

YH4
GRAND
vol.1
0A
0B
1A
1B
3
3A
3B1
3C
3C1
3D
3E
3F
4A2
4B
5
6
7A5A
5B
5C
5E1
6A1
6A2
6A4
6B
6C
6E1
6E2
6F1
6F2
6G
6G1
6H
6K
7A1
7B1
7C1
7D
7E
7F
8
8B
8C
8D
8G
9
10
10A
8A
10B
6-1ENGINE
General Information and
Diagnosis (G16 / J20)
General Information and
Diagnosis (H25)
Engine Mechanical (G16)
Engine Mechanical (H25)
Engine Mechanical (J20)
Engine Cooling
Engine Fuel
Engine and Emission Control
System (SFI for G16 / J20)
Engine and Emission Control
System (SFI for H25)
Ignition System (G16)
Ignition System (J20 / H25)
Cranking System
(Reduction Type)
Cranking System
(No-Reduction Type)
Charging System
Exhaust System
TRANSMISSION, CLUTCH
AND DIFFERENTIAL
Manual Transmission (Type 1)
Manual Transmission (Type 2)
Automatic Transmission
Clutch (Hydraulic Type)
Transfer
Differential (Front)
Differential (Rear)
BODY ELECTRICAL SYSTEM
Wiring Diagram
Lighting System
Instrumentation / Driver
Information
Windows, Mirrors, Security
and Lock
Immobilizer Control System
BODY SERVICE
RESTRAINT SYSTEM
Seat Belt
Air Bag System GENERAL INFORMATION
General Information
Maintenance and Lubrication
TABLE OF CONTENTS TABLE OF CONTENTS SECTIONSECTION
0B
HEATING AND AIR
CONDITIONING
Heater and Ventilation
Air Conditioning
STEERING, SUSPENSION,
WHEELS AND TIRES
Front End Alignment
Power Steering (P / S) System
Steering Wheel and Column
(Not Equipped with Air Bag)
Air Bag Steering Wheel
and Column
Front Suspension
Rear Suspension
Wheel and Tires
1A
3A 0A
1B
3B1
3C
3C1
3D
3E
3F36A16
6A2
6A4
6B
6C
6E1
6E2
6F1
DRIVE SHAFT / PROP. SHAFT
Front Drive Shaft / Shaft
Bearing, Oil Seal
Propeller Shaft
BRAKES
Brake Pipe / Hose / Master
Cylinder
Front Brakes
Parking and Rear Brakes
Antilock Brake System
4A2
4B
5
5A
5B
5C
5E1
6F2
6G
6G1
6H
6K
7A
7A1
7B1
7C1
7D
7E
7F
8
8A
8B
8C
8D
8G
9
10
10A
10B
6-1
NOTE:
The screen toned Sections 6 ± 6K are included in Volume 2 and Section 8A is in Wiring
Diagram Manual.

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VITARA
0A
GENERAL INFORMATION 0A-1
SECTION 0A
GENERAL INFORMATION
CONTENTS
HOW TO USE THIS MANUAL0A- 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRECAUTIONS0A- 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions for Vehicle Equipped with a Supplemental Restraint (Air Bag) System 0A- 3. . . . . . . . . . . . . . . .
Diagnosis0A- 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing and Handling0A- 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Precautions0A- 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions for Catalytic Converter 0A- 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions for Electrical Circuit Service 0A-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Circuit Inspection Procedure 0A-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intermittent and Poor Connection 0A-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precaution for Installing Mobile Communication Equipment 0A-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IDENTIFICATION INFORMATION0A-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Body Number0A-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Identification Number0A-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Identification Number 0A-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARNING, CAUTION AND INFORMATION LABELS0A-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VEHICLE LIFTING POINTS0A-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ABBREVIATIONS MAY BE USED IN THIS MANUAL0A-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
METRIC INFORMATION0A-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Metric Fasteners0A-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fasteners Strength Identification 0A-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Tightening Torque0A-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

YH4
GRAND
VITARA
1. Air bag wire harness
2. Passenger air bag
(inflator) module
3. SDM
4. DLC5. Contact coil
6. Driver air bag (inflator)
module
7. Seat belt pretensioner
(if equipped)
GENERAL INFORMATION 0A-3
PRECAUTIONS
PRECAUTION FOR VEHICLES EQUIPPED
WITH A SUPPLEMENTAL RESTRAINT
(AIR BAG) SYSTEM
WARNING:

The configuration of air bag system parts are as shown in
the figure. When it is necessary to service (remove, rein-
stall and inspect) these parts, be sure to follow proce-
dures described in SECTION 10B. Failure to follow proper
procedures could result in possible air bag system activa-
tion, personal injury, damage to parts or air bag system
being unable to activate when necessary.

If the air bag system and another vehicle system both
need repair, SUZUKI recommends that the air bag system
be repaired first, to help avoid unintended air bag system
activation.

Do not modify the steering wheel, dashboard, or any other
air bag system components. Modifications can adversely
affect air bag system performance and lead to injury.

If the vehicle will be exposed to temperatures over 93
C
(200
F) (for example, during a paint baking process), re-
move the air bag system components beforehand to avoid
component damage or unintended air bag system activa-
tion.
DIAGNOSIS

When troubleshooting air bag system, be sure to follow
ªDIAGNOSISº in SECTION 10B. Bypassing these proce-
dures may result in extended diagnostic time, incorrect diag-
nosis, and incorrect parts replacement.

Never use electrical test equipment other than that specified
in this manual.
WARNING:
Never attempt to measure the resistance of the air bag (in-
flator) modules (driver and passenger) and seat belt preten-
tioners (driver and passenger). It is very dangerous as the
electric current from the tester may deploy the air bag or ac-
tivate the pretensioner.

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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
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VITARA
1. Coupler
2. Probe
1. Coupler
2. Probe
3. Where male
terminal fits
0A-10 GENERAL INFORMATION
PRECAUTIONS FOR ELECTRICAL CIRCUIT
SERVICE

When disconnecting and connecting coupler, make sure to
turn ignition switch OFF, or electronic parts may get dam-
aged.

Be careful not to touch the electrical terminals of parts which
use microcomputers (e.g. electronic control unit like as
ECM, PCM, P/S controller, etc.). The static electricity from
your body can damage these parts.

Never connect any tester (voltmeter, ohmmeter, or whatever)
to electronic control unit when its coupler is disconnected.
Attempt to do it may cause damage to it.

Never connect an ohmmeter to electronic control unit with
its coupler connected to it. Attempt to do it may cause dam-
age to electronic control unit and sensors.

Be sure to use a specified voltmeter / ohmmeter. Otherwise,
accurate measurements may not be obtained or personal in-
jury may result.

When taking measurements at electrical connectors using a
tester probe, be sure to insert the probe from the wire har-
ness side (backside) of the connector.

When connecting meter probe from terminal side of coupler
because it can't be connected from harness side, use extra
care not to bend male terminal of coupler of force its female
terminal open for connection.
In case of such coupler as shown connect probe as shown
to avoid opening female terminal.
Never connect probe where male terminal is supposed to fit.

YH4
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VITARA
0A-12 GENERAL INFORMATION
1. Check for loose connectionSensor
ECM
Check contact tension by
Inserting and removing just for
once
1. Looseness of crimping
2. Open
3. Thin wire (Single strand of wire)
ELECTRICAL CIRCUIT INSPECTION
PROCEDURE
While there are various electrical circuit inspection methods, de-
scribed here is a general method to check its open and short circuit
by using an ohmmeter and a voltmeter.
OPEN CIRCUIT CHECK
Possible causes for the open circuit are as follows. As the cause is
in the connector or terminal in many cases, they need to be checked
particularly carefully.

Loose connection of connector

Poor contact of terminal (due to dirt, corrosion or rust on it, poor
contact tension, entry of foreign object etc.)

Wire harness being open
When checking system circuits including an electronic control unit
such as ECM, TCM, ABS control module, etc., it is important to per-
form careful check, starting with items which are easier to check.
1) Disconnect negative cable from battery.
2) Check each connector at both ends of the circuit being checked
for loose connection. Also check lock condition of connector if
equipped with connector lock.
3) Using a test male terminal, check both terminals of the circuit be-
ing checked for contact tension of its female terminal.
Check each terminal visually for poor contact (possibly caused
by dirt, corrosion, rust entry of foreign object, etc.).
At the same time, check to make sure that each terminal is
locked in the connector fully.
4) Using continuity check or voltage check procedure described in
the following page, check the wire harness for open circuit and
poor connection with its terminals. Locate abnormality, if any.

YH4
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VITARA
1. Check contact tension by inserting and removing
just once.
2. Check each terminal for bend and proper alignment.
GENERAL INFORMATION 0A-15
INTERMITTENT AND POOR CONNECTION
Most intermittent are caused by faulty electrical connections or wir-
ing, although a sticking relay or solenoid can occasionally be at
fault. When checking it for proper connection, perform careful
check of suspect circuits for:

Poor mating of connector halves, or terminals not fully seated in
the connector body (backed out).

Dirt or corrosion on the terminals. The terminals must be clean
and free of any foreign material which could impede proper termi-
nal contact.
However, cleaning the terminal with a sand paper or the like is
prohibited.

Damaged connector body, exposing the terminals to moisture
and dirt, as well as not maintaining proper terminal orientation
with the component or mating connector.

Improperly formed or damaged terminals.
Check each connector terminal in problem circuits carefully to en-
sure good contact tension by using the corresponding mating ter-
minal.
If contact tension is not enough, reform it to increase contact ten-
sion or replace.

YH4
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VITARA
1. Evaporator thermistorTemperature
Resistance ( )


AIR CONDITIONING (OPTIONAL) 1B-43
A / C EVAPORATOR THERMISTOR
(EVAPORATOR TEMPERATURE SENSOR)
A thermistor is a temperature sensor to sense the temperature of
air discharged from evaporator. The electrical characteristic is
shown in the figure.
When temperature is lower than preset temperature, amplifier
makes magnet clutch turn off to prevent evaporator from frosting.
INSPECTION
Check resistance between A / C evaporator thermistor (1) termi-
nals.
If check results are as not specified, replace thermistor.
Sensor Temperature
Resistance
0
C, 32
F7.0 ± 7.7 k

25
C, 77
F2.1 ± 2.4 k

REMOVAL
Refer to ªCOOLING UNIT (EVAPORATOR)º in this section.
INSTALLATION
1) Reverse removal sequence to install thermistor.
2) Enable air bag system. Refer to ªENABLING AIR BAG SYS-
TEMº in Section 10B.
3) Evacuate and charge system. Refer to ªEVACUATINGº and
ªCHARGINGº in this section.

YH4
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VITARA
1. Diagnosis connector
(6 pins connector)
2. Ground terminal3. Diag. switch terminal
4. Service wire
5E1-6 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
ABS HYDRAULIC UNIT/CONTROL MODULE
ASSEMBLY
ABS control module is a component of ABS hydrauli unit / control
module assembly and has the following functions.
Self-Diagnosis Function
ABS control module diagnoses conditions of the system compo-
nent parts (whether or not there is any abnormality) all the time and
indicates the results (warning of abnormality occurrence and DTC)
through the ªABSº warning lamp as described below.
1) When ignition switch is turned ON, ªABSº warning lamp lights for
2 seconds to check its bulb and circuit.
2) When no abnormality has been detected (the system is in good
condition), ªABSº warning lamp turns OFF after 2 seconds.
3) When the vehicle starts to move after the ignition switch is turned
ON (more than one wheel speed sensor signals are inputted),
solenoid valves and motor of ABS hydraulic unit operate once
one after another for electrical check.
During this check, motor operation sound may be heard but that
means nothing abnormal.
4) When an abnormality in the system is detected, ªABSº warning
lamp lights and the area where that abnormality lies is stored in
the memory of EEPROM in ABS control module.
5) When Diag. switch terminal of diagnosis connector (monitor
connector) is grounded, the abnormal area is output as DTC. It
is indicated by flashing of ªABSº warning lamp. (Refer to the
table below. )
ABS WARNING LAMP
SYSTEM CONDITIONDiag. switch
terminal is not
groundedDiag. switch
terminal is
grounded
In good condi-
No trouble in
the pastOFFDTC 12g
tion at presentTrouble occur-
red in the pastOFFHistory DTC
Abnormality
exists at
No trouble in
the pastONCurrent DTC
exists at
presentTrouble occur-
red in the pastONCurrent and
history DTCs
For procedure to clear all DTC's, refer to the item ªDiagnostic
Trouble Code Clearanceº in this section.
Also ABS control module turns ON EBD warning lamp (brake warn-
ing lamp) depending on the trouble that detected by the module and
EBD warning lamp does not indicate DTC as well as ªABSº warning
lamp.
Fail-Safe Function
When an abnormality occurs (an abnormal DTC is detected), ABS
control module turns OFF the fail-safe relay which supplies power
to ABS hydraulic unit. Thus, with ABS not operating, brakes func-
tion just like the brake system of the vehicle not equipped with ABS.