1999 SUZUKI GRAND VITARA Enabling air bag system

YH4
GRAND
VITARA
1A-6 HEATER AND VENTILATION
6) Remove cooling unit (If equipped).
Refer to item COOLING UNIT (EVAPORATOR) REMOVAL in
Section 1B.
7) Disconnect fresh air control cable from blower motor case.
8) Remove blower motor unit (1) by removing its fastening nuts
(2).
9) Disconnect blower motor lead wire (2) at coupler from blower
unit (1).
10) Remove blower motor (3) by removing its mounting screws (4).
INSTALLATION
1) Reverse removal procedure for installation.
2) Connect fresh air control cable, refer to HEATER CONTROL
CABLES INSTALLATION.
3) Enable air bag system, if equipped. Refer to ENABLING AIR
BAG SYSTEM in Section 10B.

YH4
GRAND
VITARA
HEATER AND VENTILATION 1A-7
1. Fastening nuts
1. Air flow
BLOWER MOTOR
REMOVAL
1) Disconnect negative (±) cable at battery.
2) Disable air bag system, if equipped. Refer to DISABLING AIR
BAG SYSTEM in Section 10B.
3) Remove ECM with bracket from blower motor unit.
4) Disconnect harness clamps from dash panel.
5) Loosen three nuts fastening blower unit.
6) Disconnect blower motor lead wire at coupler (2).
7) Remove blower motor (3) from blower unit (1).
INSPECTION

Check continuity between terminal to terminal as shown in left fig-
ure.
If check results are continuity, proceed to next operation check.
If not, replace.

Connect battery to blower motor as shown, then check that the
blower motor operates smoothly and specified current.
Specified current: Max. 25 A at 12 V
INSTALLATION
1) Reverse removal procedure for installation.
2) Enable air bag system, if equipped. Refer to ENABLING AIR
BAG SYSTEM in Section 10B.

YH4
GRAND
VITARA
HEATER AND VENTILATION 1A-9
1. LO
2. M1
3. M2
4. HI
BLOWER MOTOR RESISTOR
REMOVAL
1) Disconnect negative (±) cable (2) at battery (1).
2) Disable air bag system, if equipped. Refer to DISABLING AIR
BAG SYSTEM in Section 10B.
3) Open glove box (1), then remove screw (2).
4) Remove glove box.
5) Disconnect blower motor resistor (1) at coupler.
6) Remove heater blower resistor (1) by removing its fastening
screw (2).
INSPECTION
Measure each terminal-to-terminal resistance on resistor.
Resistance H-LO: Approx. 2.0

H-M1: Approx. 1.0

H-M2: Approx. 0.4

If measured resistance is incorrect, replace heater blower resistor.
INSTALLATION
1) Install heater blower resistor with screws.
2) Enable air bag system, if equipped. Refer to ENABLING AIR
BAG SYSTEM in Section 10B.

YH4
GRAND
VITARA
HEATER AND VENTILATION 1A-13
1. Lever
FOR LEFT HAND STEERING VEHICLE
FOR RIGHT HAND STEERING VEHICLE
4) Disconnect heater mode control actuator coupler (1).
5) Disconnect heater mode control actuator rod (2) from heater
unit.
6) Remove heater mode control actuator from heater unit by re-
moving its mounting screw (3).
INSPECTION
1) Connect battery voltage (+) to terminal ªb'º and (±) to terminal
ªaº.
2) Connect each terminal listed below to terminal ªa'º (negative (±)
terminal of battery) and check if lever rotation angle is as speci-
fied in figure.
MODE
TERMINAL
VENTc
BI-LEVELd
HEATe
DEF / HEATf
DEFg
INSTALLATION
1) Install in reverse order of removal procedure.
2) If equipped with air bag system, enable air bag system.
Refer to ENABLING AIR BAG SYSTEM in Section 10B.

YH4
GRAND
VITARA
HEATER AND VENTILATION 1A-15
1. Heater unit
2. Blower unit
3. Fresh air control cable
4. Temperature control cable
5. Heater control lever assembly
HEATER CONTROL CABLES
REMOVAL
1) Remove heater control lever assembly.
Refer to HEATER CONTROL LEVER ASSEMBLY in this sec-
tion.
2) Remove control cables (2) from control lever assembly (1).
INSTALLATION
1) Install in reverse order of removal procedure.
Refer to HEATER MODE CONTROL SWITCH in this section.
2) If equipped with air bag, enable air bag system.
Refer to ENABLING AIR BAG SYSTEM in Section 10B.

YH4
GRAND
VITARA
1A-18 HEATER AND VENTILATION
11) Remove heater core pipe clamps (1) and grommet (2).
12) Pull out heater core (1) from unit (2).
INSTALLATION
1) Install heater unit by reversing removal procedure, noting the
following items.

When installing each part, be careful not to catch any cable or
wiring harness.

When installing steering column assembly, refer to STEER-
ING COLUMN INSTALLATION in Section 3C or 3C1.
2) Install control cables. (Refer to HEATER CONTROL CABLES in
this section.)
3) Fill engine coolant to radiator.
4) Enable air bag system, if equipped. Refer to ENABLING AIR
BAG SYSTEM in Section 10B.
5) Evacuate and charge system. Refer to items EVACUATING
SYSTEM and PROCEDURE OF CHARGING in Section 1B.

YH4
GRAND
VITARA
1
1. Ears1. Air flow
1B-38 AIR CONDITIONING (OPTIONAL)
CLEAN
Blow off dust by compressed air from air outlet side of the filter ele-
ment.
INSTALLATION
Reverse removal procedure for installation noting the followings:

Install filter into cooling unit directing arrow mark on its end face
to heater unit.

Enable air bag system after installation. Refer to ªENABLING AIR
BAG SYSTEMº in Section 10B.

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-41
INSPECTION
1) Check evaporator fins for blockage. If found clogged, use com-
pressed air to clean the fins.
CAUTION:
Do not use water for cleaning of evaporator.
Be careful not to damage evaporator fins. If evaporator
fin is bent, straighten it by using a screwdriver or pair of
pliers. If any leakage is found from fitting or tube, repair
or replace evaporator.
2) Check inlet and outlet fittings for crack or scratch. Repair them
as required.
REASSEMBLY and INSTALLATION
1) Reverse removal and disassembly sequence to install cooling
unit, noting the following points.

Install uniformly the evaporator packing to dash panel hole for
expansion valve.

Adjust fresh air control cable, refer to ªHEATER CONTROL
LEVER ASSEMBLYº in Section 1A.
2) Enable air bag system. Refer to ªEnabling Air Bag Systemº in
Section 10B.
3) Evacuate and charge system. Refer to ªEVACUATINGº and
ªCHARGINGº in this section.
NOTE:
When the thermistor removed, it should be reinstalled in
original position.
If cooling unit or evaporator is replaced, pour 25 cc of refrig-
erating oil to compressor suction-side.