2000 SUZUKI GRAND VITARA Disable air bag

YH4
GRAND
VITARA
HEATER AND VENTILATION 1A-5
1. Blower unit
2. Blower motor resistor
3. Blower motor relay
4. Blower fan
5. Blower motor
3. Cover
ON-VEHICLE SERVICE
BLOWER UNIT
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 passenger lower member (1).
4) Remove ECM (1) with bracket (2) from blower motor unit (4).
5) Disconnect blower motor (1), blower motor relay (2) and resistor
lead wires (3) at couplers.

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
1A-8 HEATER AND VENTILATION
BLOWER MOTOR RELAY
REMOVAL
1) Disconnect negative (±) cable at battery.
2) Disable air bag system, if equipped. Refer to DISABLING AIR
BAG SYSTEM in Section 10B.
3) Open glove box, then remove screw.
4) Remove glove box.
5) Disconnect relay coupler.
6) Remove blower motor relay (1) by removing its fastening screw (2).
INSPECTION
1) Check that there is no continuity between terminal ªcº and ªdº.
If there is continuity, replace relay.
2) Connect battery positive (+) terminal to terminal ªbº of relay.
Connect battery negative (±) terminal ªaº of relay.
Check continuity between terminal ªcº and ªdº.
If there is no continuity when relay is connected to the battery,
replace relay.

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
1A-10 HEATER AND VENTILATION
2. Screws1 2
HEATER MODE CONTROL SWITCH
REMOVAL
1) Disconnect negative (±) cable at battery.
2) If equipped with air bag system, disable air bag system.
Refer to DISABLING AIR BAG SYSTEM in Section 10B.
3) Remove meter cluster hood (1) by removing its mounting
screws (2).
4) Remove ashtray, center garnish (1) and instrument glove box
compartment.
5) Remove radio (1) (if equipped) or clock or accessory case.
6) Disconnect control cables (3) from blower motor unit (2) and
heater unit (1).

YH4
GRAND
VITARA
1A-12 HEATER AND VENTILATION
1. Temperature control lever
2. Fresh air control lever
1. Fresh air control cable 1. Heater unit
2. Control cable1
2
INSTALLATION
1) Install in reverse order of removal procedure.
2) Adjust cables as follows.
(1) Move control lever fully in arrow direction.
(2) Push heater lever fully in arrow direction and fix cable with
clamp in position as shown in left figure.
(3) Push blower lever fully in arrow direction and fix cable with
clamp in position as shown in left figure.
NOTE:
After installing control cables, be sure that control levers
move smoothly and stop at proper position.
3) If equipped with air bag, enable air bag system. Refer to ªENAB-
LING AIR BAG SYSTEMº in Section 10B.
HEATER MODE CONTROL ACTUATOR
REMOVAL
1) Disconnect negative (±) cable at battery.
2) If equipped with air bag system, disable air bag system.
Refer to DISABLING AIR BAG SYSTEM in Section 10B.
3) Remove column hole cover.

YH4
GRAND
VITARA
1. Blower motor switch connector
1
1A-14 HEATER AND VENTILATION
HEATER CONTROL LEVER ASSEMBLY
REMOVAL
1) Disconnect negative (±) cable at battery.
2) If equipped with air bag system, disable air bag system.
Refer to DISABLING AIR BAG SYSTEM in Section 10B.
3) Remove mode control switch. Refer to item HEATER MODE
CONTROL SWITCH in this section.
INSPECTION
Check heater blower motor switch for each terminal-to-terminal
continuity. For the detail refer to WIRING CIRCUIT earlier in this
section.
EFLMLMHH
LOW
M1
M2
HIGH

YH4
GRAND
VITARA
HEATER AND VENTILATION 1A-17
1. Dash panel (engine room) 2. Nuts
REMOVAL
WARNING:
Failure to follow the following procedure and WARNING
may cause air bag deployment, personal injury, damage to
parts, or air bag being unable to deploy.

Never rest a steering column assembly on steering wheel
with air bag (inflator) module face down and column verti-
cal.

When handling the air bag (inflator) modules (driver and
passenger), be careful not to drop it or apply an impact to
it. If an excessive impact was applied (e.g., dropped from
a height of 91.4 cm (3 feet) or more, never attempt disas-
sembly or repair but replace it with a new one.

When grease, cleaning agent. Oil, water, etc. has got onto
air bag (inflator) modules (driver and passenger), wipe off
immediately with a dry cloth.
1) Disconnect negative (±) cable at battery.
2) Disable air bag system, if equipped. Refer to DISABLING AIR
BAG SYSTEM in Section 10B.
3) Drain engine coolant and disconnect heater hose (1) from
heater unit.
4) Remove instrument panel, refer to item INSTRUMENT PANEL
REMOVAL in Section 9.
5) Remove cooling unit (If equipped).
Refer to item EVAPORATOR (COOLING UNIT) REMOVAL in
Section 1B.
6) Disconnect rear duct (4) from heater unit.
7) Disconnect heater mode control actuator lead wire (1) at cou-
plers.
8) Remove A / C controller (2) (If equipped).
9) Remove SDM (3) (If equipped).
10) Remove heater unit.