Get Heater (Optional) and Ventilation -> On-Vehicle Service Guide for Suzuki Alto 4 Door Fifth Generation (1998-2003)

ON VEHICLE SERVICE

HEATER UNIT

1. Heater core

2. Blower fan motor assembly

3. Blower fan motor resistor

4. Temperature door assembly

5. Air outlet control door assembly

6. Air outlet control lever

7. Temperature control lever

8. Heater case

9. Water valve

HEATER AND VENTILATION 1A-5

REMOVAL

1) Disconnect negative (–) cable at battery.

2) Drain engine coolant and disconnect heater hoses (1) from

heater unit.

3) Remove instrument panel.

4) Disconnect each couplers (blower motor, resistor) from heater

unit.

5) Remove bolts (2), nuts (3) and screws (4) (if vehicle equipped

with A/C) as shown.

6) Remove heater unit (5) from vehicle.

INSTALLATION

Install heater unit by reversing removal procedure, noting the fol-

lowing items.

D When installing each part, be careful not to catch any cable or

wiring harness.

D Adjust heater control cable (refer to heater control lever assem-

bly in this section).

D Fill engine coolant to radiator, refer to ENGINE COOLANT

CHARGE in Section 0B.

1A-6 HEATER AND VENTILATION

BLOWER FAN MOTOR

REMOVAL

1) Disconnect negative (–) cable at battery.

2) Disconnect blower motor coupler.

3) Loosen water valve by removing its attaching screws (1).

4) Remove blower fan motor (2) by removing it attaching screws

(3).

INSPECTION

Check continuity between two terminal as shown in figure.

If check results are continuity, proceed to next operation check, if

not replace.

Connect battery to blower fan motor as shown, then check that the

blower motor (1) operates smoothly.

INSTALLATION

Reverse removal procedure for installation.

HEATER AND VENTILATION 1A-7

BLOWER FAN MOTOR RESISTOR

REMOVAL

1) Disconnect negative (–) cable at battery.

2) Disconnect resistor coupler (1).

3) Remove blower motor resistor (2) by removing its mounting

screw (3).

INSPECTION

Measure each terminal-to-terminal resistance on resistor

Resistance Me – Lo: 1.5 – 3.0 W at 255C (775F)

Me – Hi : 0.5 – 1.5 W at 255C (775F)

If measured resistance is incorrect, replace blower motor resistor.

INSTALLATION

Reverse removal procedure for installation.

1A-8 HEATER AND VENTILATION

HEATER CONTROL LEVER ASSEMBLY

1. Heater control lever assembly

2. Bulb

3. Fresh air control cable

4. Air outlet control cable

5. Temperature control cable

6. Temperature control knob

7. Air outlet control knob

8. Fresh air control knob

REMOVAL

1) Disconnect negative (–) cable at battery.

2) Disconnect each heater control cables (air outlet control (1),

temperature control (2) and fresh air control) from heater unit

and air inlet box or cooling unit (if equipped with A/C).

3) Disconnect heater control panel illumination coupler and A/C

switch coupler (if equipped).

4) Loosen steering column assembly, refer to “STEERING COL-

UMN” in section 3C.

5) Remove temperature control knob (1), air outlet control knob (2)

and blower fan motor switch knob (3).

6) Remove meter cluster (4) by removing its mounting screws.

HEATER AND VENTILATION 1A-9

7) Remove heater control lever assembly (1) by removing mount-

ing screws.

INSTALLATION

1) Reverse removal procedure for installation.

2) Adjust the following items.

i) Move air outlet control knob (a), temperature control knob (b)

and fresh air control knob (c) fully in arrow direction as shown

in figure.

ii) Push air outlet lever (d), temperature lever (e) and door link

(f) fully in arrow direction and fix cable with clamp in position

as shown in figure.

NOTE :

After installing control cables, be sure that control levers

move smoothly and stop at proper position.

1. Heater unit

2. Air inlet box or cooling unit

3. Air outlet control cable

4. Temperature control cable

5. Fresh air control cable

1A-10 HEATER AND VENTILATION

BLOWER FAN MOTOR SWITCH

REMOVAL

1) Disconnect negative (–) cable at battery.

2) Disconnect heater control panel illumination coupler and A/C

switch coupler (if equipped).

3) Loosen steering column assembly, refer to STEERING COL-

UMN in section 3C.

4) Remove temperature control knob (1), air outlet control knob (2)

and blower fan motor switch knob (3).

5) Remove meter cluster (4) by removing its mounting screws (5).

6) Disconnect blower fan switch coupler.

7) Loosen blower fan switch screw (1) and then remove blower fan

motor switch (2) from instrument panel.

INSPECTION

Check blower fan switch for each terminal-to-terminal continuity.

For the detail refer to “WIRING CIRCUIT” earlier in this section.

POSITION

TERMINAL

INSTALLATION

Reverse removal sequence to install blower fan switch.

HEATER AND VENTILATION 1A-11

E L M H

OFF

AIR INLET BOX

REMOVAL

NOTE:

If vehicle is equipped with air conditioning, refer to COOLING

UNIT in Section 1B.

1) Remove fresh air control cable (1) from air inlet box (2).

2) Open glove box lid (4).

3) Loosen air inlet box mounting nut (1) and screws (2).

4) Remove air inlet box (3).

INSTALLATION

NOTE:

If vehicle is equipped with air conditioning, refer to COOLING

UNIT in Section 1B.

Reverse removal sequence to install air inlet box, noting the follow-

ing point.

D Adjust fresh air control cable, refer to HEATER CONTROL LE-

VER ASSEMBLY in this section.

1A-12 HEATER AND VENTILATION

Heater (Optional) and Ventilation -> On-Vehicle Service for Your Suzuki Alto 4 Door Fifth Generation (1998-2003)

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