Heater Core Removal And Installation; Hvac Control Module Removal And Installation; Hvac Control Module And Its Circuits; Air Flow Control Actuator Removal And - Suzuki GRAND VITARA Owner's Manual

Heater Core Removal and Installation

Removal
1) Remove instrument panel referring to "Instrument
Panel Removal and Installation: in Section 9C".
2) Remove HVAC unit. Refer to "HVAC Unit Removal
and Installation: in Section 7B".
3) Remove heater core pipe clamp and then, pull out
heater core (1) from HVAC unit.
Installation
1) Install heater core by reversing removal procedure,
noting the following items.
• When installing heater core, be careful not to
damage fins of heater core.
• When installing each part, be careful not to catch
any wiring harness.
2) Fill engine coolant to radiator.
3) Enable air bag system referring to "Enabling Air Bag
System: in Section 8B".

HVAC Control Module Removal and Installation

Removal
1) Disconnect negative (–) cable at battery.
2) Remove center garnish with audio unit (if equipped)
and HVAC control module referring to "Audio Unit
Removal and Installation: in Section 9C".
3) Remove HVAC control module mounting screws and
then, remove HVAC control module (2) from center
garnish (1).
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Installation
Reverse removal procedure.
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Heater and Ventilation:

HVAC Control Module and Its Circuits

Inspection (for Vehicle without A/C)
HVAC control module and its circuits inspection is the
same as vehicle equipped with A/C system.
Refer to "HVAC Control Module and Its Circuits
Inspection: in Section 7B".

Air Flow Control Actuator Removal and

Installation
Removal
1) Disconnect negative (–) cable at battery.
2) Remove steering column hole cover from instrument
panel.
3) Disconnect air flow control actuator connector (2).
4) Remove screws and then, remove air flow control
actuator (1) from HVAC unit.
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Installation
Reverse removal procedure.

Air Flow Control Actuator Inspection

1) Remove air flow control actuator (1) referring to "Air
Flow Control Actuator Removal and Installation: ".
2) Check resistance between "d" and "e" terminals.
Air flow control actuator resistance
DEF position: Approx. 700 Ω
FOOT / BENT position: Approx. 1.7 kΩ
FOOT position: Approx. 2.4 kΩ
BI-LEVEL position: Approx. 3.9 kΩ
VENT position: Approx. 5.1 kΩ
3) Connect battery positive (+) terminal to terminal "a"
and battery negative (–) terminal to terminal "b".
Check if position of air flow control actuator changes
VENT position to DEF position.
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