2000 SUZUKI SWIFT heater

HEATER AND VENTILATION 1A-5
ON-VEHICLE SERVICE
HEATER UNIT
1. Heater core 4. Temperature door assembly 7. Temperature lever assembly Do not reuse
2. Blower fan motor assembly 5. Air outlet control door assembly 8. Packing
3. Blower fan motor resistor 6. Air outlet control lever assembly 9. Demistor air outlet case

1A-6 HEATER AND VENTILATION
REMOVAL
1) Disconnect negative (–) cable at battery.
2) Drain engine coolant and disconnect heater hoses (1) from
heater unit.
3) Remove heater unit mounting nut (2).
4) Remove instrument panel by referring to “INSTRUMENT
PANEL” in Section 9.
5) Disconnect blower motor and resistor couplers from heater
unit.
6) Remove bolts (1), nuts (2) and screws (3) as shown.
7) Remove cooling unit (4) and heater unit (5) from vehicle.
INSTALLATION
Reverse removal procedure to install heater unit noting the follow-
ing instructions.
When installing each part, be careful not to catch any cable
or wiring harness.
Adjust heater control cable by referring to “HEATER CON-
TROL LEVER ASSEMBLY” in this section.
Fill engine coolant to radiator.

HEATER AND VENTILATION 1A-7
BLOWER FAN MOTOR
REMOVAL
1) Disconnect negative (–) cable at battery.
2) Remove steering column hole cover.
3) Remove brake and clutch pedals bracket from vehicle body.
4) Disconnect blower motor coupler (1).
5) Remove blower fan motor (2).
INSPECTION
1) Check continuity between two terminal as shown.
If check results are no continuity, replace blower fan motor
assembly (1).
2) Check operate and current.
a) Fix blower fan motor assembly (1) by using vise.
b) Connect battery to blower fan motor assembly (1) as
shown.
c) Check that there is smoothly operates and no noise.
d) Check that ammeter indicates specified current.
If measure current is incorrect, replace blower fan motor.
Blower fan specified current at 12V
: 18 A maximum
INSTALLATION
Reverse removal procedure for installation.

1A-8 HEATER AND VENTILATION
BLOWER FAN MOTOR RESISTOR
REMOVAL
1) Disconnect negative (–) cable at battery.
2) Disconnect blower fan motor resistor coupler.
3) Remove blower fan motor resistor (1) as shown.
INSPECTION
Measure each terminal-to-terminal resistance on resistor
If measured resistance is incorrect, replace blower motor resistor.
Blower fan motor resistor resistance
H–MH : approximately 0.5
Ω
ΩΩ Ω at 25°C (77°F)
H–ML : approximately 1.5
Ω
ΩΩ Ω at 25°C (77°F)
H–L : approximately 3.0
Ω
ΩΩ Ω at 25°C (77°F)
INSTALLATION
Reverse removal procedure for installation.
CAUTION:
When the heater unit is disassembled and reassembled,
locking force of the heater case lock may reduce. In such
a case, tighten the heater case with a tapping screw (1) of
M4 x L16 as shown in the figure, or air may leak from its
joint section.
1

HEATER AND VENTILATION 1A-9
HEATER CONTROL ASSEMBLY
REMOVAL
1) Disconnect negative (–) cable at battery.
2) Remove steering column hole cover.
3) Remove heater control knob (1), center upper garnish (2),
center lower garnish (3) and glove box.
4) Disconnect air outlet control (3), temperature control (2) and
fresh air control (1) cables.
5) Remove heater control assembly (1), and then disconnect
blower fan switch connector (2) after unlock locking part (3)
as shown.
1. Heater control assembly 3. A/C switch LED (if equipped) 5. Fresh air control cable 7. Temperature control cable
2. A/C switch knob (if equipped) 4. Bulb 6. Air outlet control cable 8. Heater control knob

1A-10 HEATER AND VENTILATION
INSTALLATION
1) Reverse removal procedure for installation.
2) Adjust the following items.
a) Move air outlet control dial (1), temperature control dial (2)
and fresh air control lever (3) fully in arrow direction as
shown in figure.
b) Push air outlet lever (4), temperature lever (5) and door link
(6) fully in arrow direction and fix air outlet control cable (7),
temperature control cable (8) and fresh air control cable (9)
with clamp in position as shown in figure.
[A] : For LH model
[B] : For RH model
NOTE:
After installing control cables, be sure that control levers
move smoothly and stop at proper position.
[A] : For LH model
[B] : For RH model

HEATER AND VENTILATION 1A-11
INSPECTION
Check blower fan switch for each terminal-to terminal continuity.
1. Terminal arrangement of blower fan switch
2. Blower fan switch
POSITIONTERMINALE
OFF
L
ML
MH
HLMLMHH
Circuit table of blower fan switch
1
2
ILM S/W
GND
1

1A-12 HEATER AND VENTILATION
AIR INLET BOX
REMOVAL
1) Disconnect negative (–) cable at battery.
2) Remove glove box.
3) Disable air bag system by referring to “DISABLING AIR BAG
SYSTEM” in Section 10B. (if equipped)
4) Disconnect fresh air control cable (1) from air inlet box.
1. Resistance board 4. Fresh air duct packing 7. Air inlet door 10. Cable clamp
2. Air inlet case
: Apply sealant 99000 - 31160 to hatched part “A”
5. Door link 8. Clip : Do not reuse
3. Fresh air duct case 6. Heater unit packing 9. Dash packing
NOTE:
If vehicle equipped with A/C, refer to “COOLING UNIT” in
Section 1B.
1
72
8 1053
“A”
2
4
6
9