Suzuki Grand Vitara 1998, Service Manual

Page: 72 / 801

YH4
GRAND
VITARA
1B
AIR CONDITIONING (OPTIONAL) 1B-1
GENERAL DESCRIPTION 1B- 3 . . . . . . . . . . . . . .
Identification of Refrigerating System 1B- 3 . . . .
Refrigerant Flow of Air Conditioning
System 1B- 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Major Components and Location 1B- 5 . . . . . . .
DIAGNOSIS 1B- 6 . . . . . . . . . . . . . . . . . . . . . . . . . . .
General 1B- 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis of Abnormal Noise 1B- 8 . . . . . . . . . .
Quickly Checking of Refrigerant Charge
(If Equipped with Sight Glass) 1B-10 . . . . . . . . .
Compression System Diagnosis 1B-11 . . . . . . . .
Performance Diagnosis 1B-12 . . . . . . . . . . . . . . .
Wiring Circuit 1B-16 . . . . . . . . . . . . . . . . . . . . . . . .
Inspection of A / C Controller and Its
Circuits 1B-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REFRIGERANT RECOVERY,
EVACUATION AND CHARGING 1B-23 . . . . . . . .
Operation Procedure for Charging A / C
with Refrigerant 1B-23 . . . . . . . . . . . . . . . . . . . . .
Recovery 1B-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evacuating 1B-25 . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging 1B-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Manifold Gauge Set 1B-29 . . . . . . . . .
Leak-Testing Refrigerant System 1B-29 . . . . . . .
Liquid Leak Detectors 1B-29 . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE 1B-30 . . . . . . . . . . . . . . . .
Precaution 1B-30 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A / C Condenser Assembly 1B-33 . . . . . . . . . . . . .
Condenser Cooling Fan Assembly 1B-35 . . . . . .
SECTION 1B
AIR CONDITIONING (OPTIONAL)
WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an autho-
rized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under “Gener-
al Description” in air bag system section in order to confirm whether you are performing service on
or near the air bag system components or wiring. Please observe all WARNINGS and “Service Precau-
tions” under “On-Vehicle Service” in air bag system section before performing service on or around
the air bag system components or wiring. Failure to follow WARNINGS could result in unintentional
activation of the system or could render the system inoperative. Either of these two conditions may
result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system may
be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
CAUTION:
The air conditioning system of this vehicle uses refrigerant HFC-134a (R-134a).
None of refrigerant, compressor oil and component parts is interchangeable between two types of A / C:
one using refrigerant CFC-12 (R-12) and the other using refrigerant HFC-134a (R-134a).
Be sure to check which refrigerant is used before any service work including inspection and mainte-
nance. For identification between these two types, refer to the description in page 1B-2.
When replenishing or changing refrigerant and compressor oil and when replacing parts, make sure
that the material or the part to be used is appropriate to the A / C installed in the vehicle being serviced.
Use of incorrect one will result in leakage of refrigerant, damage in parts or other faulty condition.
For basic servicing method of the air conditioning system that is not described in this section, refer to AIR CONDI-
TIONING BASIC MANUAL (99520-02130).
CONTENTS