Hvac - Suzuki GRAND VITARA Owner's Manual

Precautions .................................................7-1
Precautions............................................................. 7-1
Precautions for HVAC ........................................... 7-1
Heater and Ventilation............................. 7A-1
General Description .............................................7A-1
Heater and Ventilation Construction ................... 7A-1
Body Ventilation Construction ............................. 7A-2
On-Board Diagnostic System Description
(for Vehicle without A/C) ................................... 7A-2
HVAC Control System Description (for
Vehicle without A/C).......................................... 7A-3
Schematic and Routing Diagram........................7A-3
Heater and Ventilation Wiring Circuit
Diagram ............................................................ 7A-3
Electronic Control Input / Output Table (for
Vehicle without A/C).......................................... 7A-3
Electronic Components Location for Heater
(for Vehicle without A/C) ................................... 7A-4
Diagnostic Information and Procedures............7A-5
Heater and Ventilation System Check ................ 7A-5
Visual Inspection ................................................. 7A-7
DTC Check ......................................................... 7A-7
DTC Clearance ................................................... 7A-7
DTC Table........................................................... 7A-7
Fail-Safe Table.................................................... 7A-7
Scan Tool Data ................................................... 7A-7
Heater and Ventilation Symptom Diagnosis........ 7A-8
Repair Instructions ..............................................7A-9
Blower Unit and Heater Unit Components .......... 7A-9
HVAC Unit Removal and Installation (for
Vehicle without A/C).......................................... 7A-9
HVAC Air Filter Removal and Installation
(for Vehicle without A/C) ................................... 7A-9
HVAC Air Filter Inspection (for Vehicle
without A/C) ...................................................... 7A-9
Blower Motor Removal and Installation............... 7A-9
Blower Motor Inspection ..................................... 7A-9
Blower Motor Controller Removal and
Installation ....................................................... 7A-10
Blower Motor Controller Inspection ................... 7A-10
Blower Motor Relay Inspection ......................... 7A-10
Heater Core Removal and Installation .............. 7A-11
HVAC Control Module Removal and
Installation ....................................................... 7A-11
HVAC Control Module and Its Circuits
Inspection (for Vehicle without A/C) ................ 7A-11
Section 7

HVAC

CONTENTS
Air Flow Control Actuator Removal and
Installation .......................................................7A-11
Air Flow Control Actuator Inspection.................7A-11
Temperature Control Actuator Removal
and Installation ................................................7A-12
Temperature Control Actuator Inspection .........7A-12
Air Intake Control Actuator Removal and
Installation .......................................................7A-13
Air Intake Control Actuator Inspection...............7A-13
Actuator Linkage Inspection..............................7A-13
Center Ventilation Louver Removal and
Installation .......................................................7A-14
Side Ventilation Louver Removal and
Installation .......................................................7A-14
Rear Duct Components.....................................7A-15
Rear Duct Removal and Installation..................7A-15
Air Conditioning System......................... 7B-1
Precautions...........................................................7B-1
A/C System Caution............................................7B-1
Precautions on Servicing A/C System ................7B-1
Precautions in Diagnosing Trouble .....................7B-1
Precautions on Handling Refrigerant
HFC-134a (R-134a) ..........................................7B-1
Precautions on Servicing Refrigerant Line..........7B-2
Precautions on Refrigerant Recovery .................7B-3
Precautions on Refrigerant Charge.....................7B-3
Precautions on Replenishing Compressor
Oil......................................................................7B-3
Precautions on Servicing Compressor
Assembly...........................................................7B-4
General Description .............................................7B-4
AUTO A/C System Description ...........................7B-4
HVAC Control System Description......................7B-4
Auto A/C Electronic Control Input / Output
Table .................................................................7B-5
HVAC Control Module Operation
Description ........................................................7B-5
A/C Refrigerant Type Description .......................7B-5
Sub-Cool A/C System Description ......................7B-6
A/C Evaporator Temperature Sensor
Description ........................................................7B-7
On-Board Diagnostic System Description...........7B-7
Schematic and Routing Diagram ........................7B-8
A/C System Wiring Circuit Diagram ....................7B-8
Component Location ...........................................7B-9
Major Components of A/C System......................7B-9
A/C Control System Components Location.......7B-10
Table of Contents 7- i
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