1999 SUZUKI GRAND VITARA heater

Table of Contents
GENERAL INFORMATION TRANSMISSION, CLUTCH AND
DIFFERENTIAL0A7A1
General Information0A
0B7B1
Maintenance and Lubrication0B
Manual Transmission7A1
7C1
HEATING AND AIR CONDITIONING
Automatic Transmission7B1
1A7D
Heater and Ventilation1A
Clutch7C1
1B7E
Air Conditioning1B
Transfer7D7F
STEERING, SUSPENSION, WHEELS
AND TIRESDifferential (Front)7E
3
Differential (Rear)7F
3A8
Steering, Suspension, Wheels and Tires3 ELECTRICAL SYSTEM3B18A
Front End Alignment3A
Electrical System8
3C18B
Power Steering (P/S) System3B1
Wiring Diagram8A3D8C
Air Bag Steering Wheel and Column3C1
Lightening System8B3E8D
Front Suspension3D
Instrumentation / Driver Information8C
3F8E
Rear Suspension3E
Windows, Mirrors, Security and Lock8D
8G
Wheels and Tires3F
Cruise Control System8E
4A2
DRIVE SHAFT AND PROPELLER SHAFT
Immobilizer control system (if equipped)8G4B9
Front Drive Shaft / Shaft Bearing,
Oil Seal4A2BODY SERVICE
Body Service9
510
Propeller Shaft4B RESTRAINT SYSTEM
5A10A
BRAKE SYSTEM
Restraint System10
5B10B
Brakes5
Seat Belt10A
5C
Brake Pipe / Hose / Master Cylinder5A
Air Bag System10B
5E2
Front Brake5B
Parking and Rear Brake5C
6-1
Antilock Brake System (ABS)5E2
6A2
ENGINE
6B
General Information and
Diagnosis (H27 Engine)6-1
6C
6E2
Engine Mechanical (H27 Engine)6A2
6F2
Engine Cooling6B
6G
Engine Fuel6C
6H
Engine and Emission Control System
(SFI For H27 Engine)6E2
6K
Ignition System (H27 Engines)6F2
Cranking System6G
Charging System6H
Exhaust System6K
NOTE:
For the screen toned Sections in the above table, refer to the same section of the Related Manuals
mentioned in FOREWORD of this manual.

HEATER AND VENTILATION 1A-1
1A
SECTION 1A
HEATER AND VENTILATION
CONTENTS
General Description ....................................... 1A-2
Rear Duct ..................................................... 1A-3
WARNING:
For vehicles equipped with Supplement Restraint (Air Bag) System:
 Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in Section 10B in order to confirm whether you are performing service on or
near the air bag system components or wiring. Please observe all WARNINGS and “Service Precau-
tions” under “On-Vehicle Service” in Section 10B before performing service on or around the air
bag system components or wiring. Failure to follow WARNINGS could result in unintentional activa-
tion of the system or could render the system inoperative. Either or these two conditions may result
in severe injury.
 Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:
For the descriptions (items) not found in this section, refer to the same section of the Service Manual
mentioned in FOREWORD of this manual.

1A-2 HEATER AND VENTILATION
General Description
The heater, an in and out air selectable-type hot water heater, is so constructed that it is possible to assure an
agreeable ventilation at all times by providing the ventilator air outlets at the center and both sides (right and left)
of the instrument panel, the hot air outlet at a place close to the feet, and the defroster air outlets at places, right
and left, along the windshield glass.
The heater and ventilation consist of the following parts.
1. Side ventilator outlet 4. Heater unit 7. Heater control lever assembly 10. Rear duct
2. Side defroster outlet 5. Defroster duct 8. Heater mode control switch
3. Center ventilator outlet 6. Ventilator duct 9. Blower unit
10

HEATER AND VENTILATION 1A-3
Rear Duct
REMOVAL
1) Disconnect negative (–) cable at battery.
2) Remove front and second seats.
3) Remove console box.
4) Take off carpet till rear duct is totally exposed.
5) Remove rear duct.
INSTALLATION
Reverse removal sequence to install rear duct.
1. Heater unit
2. Rear duct
1
2

1A-4 HEATER AND VENTILATION

1B-4 AIR CONDITIONING (OPTIONAL)
Major Components And Location
[A] : Dual A/C model 6. Receiver/dryer 13. Suction pipe 20. Ventilation air
[B] : Single A/C model 7. Front expansion valve 14. Discharge pipe 21. Rear A/C air
1. Front cooling unit 8. Heater unit 15. Recirculation air 22. Room air
2. Front A/C evaporator 9. Rear A/C unit 16. Fresh air 23. Solenoid valve
3. Front blower fan motor 10. Rear blower fan motor 17. Defroster air 24. Rear A/C evaporator
4. Compressor 11. Rear expansion valve 18. Demister air
5. Condenser assembly 12. Liquid pipe 19. Foot air
17 17
18 18
16 [A]
[B]15
21
2211
23
9
24
10 141320
21
19 19
4 12
6 312
78
17 17
18 18
16
15
20
19 19 1
2
8 5
7
12
6
513
4 14

AIR CONDITIONING (OPTIONAL) 1B-5
[A] : Dual A/C LH steering model 4. Condenser 11. Low pressure charge valve
[B] : Dual A/C RH steering model 5. Sight glass 12. Floor liquid pipe
[C] : Single A/C LH steering model 6. Refrigerant (dual) pressure sensor 13. Floor suction pipe
[D] : Single A/C RH steering model 7. Discharge pipe 14. Rear A/C unit
1. Front cooling unit 8. Liquid pipe 15. Rear A/C duct No.1
2. Heater unit 9. Suction pipe 16. Rear A/C duct No.2
3. Compressor 10. High pressure charge valve
[A]
[B]
[C][D]
10
7
9 3 4 6 5 1181
213
12 16
1514
1 2
13
12 16
1514
7
10
5
6
4
38
9 11
1 2
7
10
5
6
4
38
9 11
10
7
9 3 4 6 5 1181
2

AIR CONDITIONING (OPTIONAL) 1B-7
Cool air does not
come out or insuffi-
cient cooling (A/C sys-
tem normal operative)Insufficient or excessive charge of refrigerant Check charge of refrigerant.
Refrigerant leak in system Check system for leaks.
Condenser clogged Check condenser.
A/C evaporator clogged or frosted Check A/C evaporator.
A/C evaporator temperature sensor (A/C evap-
orator thermistor) faultyCheck A/C evaporator tempera-
ture sensor (A/C evaporator ther-
mistor).
A/C controller faulty Check A/C controller.
Expansion valve faulty Check expansion valve.
Drive belt slipping Check or replace drive belt.
Magnetic clutch faulty Check magnetic clutch.
Cool air does not
come out or insuffi-
cient cooling (A/C sys-
tem normal operative)Compressor faulty Check compressor.
Air in A/C system Replace condenser dryer, and then
perform evacuation and charging.
Air leaking from cooling unit or air duct Repair as necessary.
Heater and ventilation system faulty Check air inlet box assembly.
Check heater control lever assem-
bly.
Check heater assembly.
Blower motor faulty Check blower motor.
Excessive compressor oil existing in A/C sys-
temPull out compressor oil in A/C sys-
tem circuit, and replace compres-
sor.
Cool air does not
comes out only inter-
mittentlyWiring connection faulty Repair as necessary.
Expansion valve faulty Check expansion valve.
Excessive moisture in A/C system Replace condenser dryer, and then
perform evacuation and charging.
A/C controller faulty Check A/C controller.
Magnetic clutch faulty Check magnetic clutch.
Excessive charge of refrigerant Check charge of refrigerant.
Cool air comes out
only at high speedsCondenser clogged Check condenser.
Insufficient charge of refrigerant Check charge of refrigerant.
Air in A/C system Replace condenser dryer, and then
perform evacuation and charging.
Drive belt slipping Adjust or replace drive belt.
Compressor faulty Check compressor.
Cool air does not
comes out only at high
speedsExcessive charge of refrigerant Check charge refrigerant.
A/C evaporator frosted Check A/C evaporator.
Check A/C thermistor.
Insufficient velocity of
cooled airA/C evaporator clogged or frosted Check A/C evaporator.
Air leaking from cooling unit or air duct Repair as necessary.
Blower motor faulty Check blower motor.
Wiring or grounding faulty Repair as necessary. Condition Possible Cause Correction