MARUTI SUZUKI Zen, Supplementary Service Manual

Page: 39 / 358

1B
GENERAL DESCRIPTION 1B- 2 . . . . . . . . . . . . . . . . .
Refrigerant Flow of Air Conditioning
System 1B- 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Major Components and Location 1B- 3 . . . . . . . . . .
DIAGNOSIS 1B- 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Diagnosis Table 1B- 4 . . . . . . . . . . . . . . . . .
Diagnosis of Abnormal Noise 1B- 6 . . . . . . . . . . . . .
Quickly Checking of Refrigerant Charge 1B- 8 . . .
Performance Diagnosis 1B- 9 . . . . . . . . . . . . . . . . . .
Wiring Circuit 1B-13 . . . . . . . . . . . . . . . . . . . . . . . . . . .
A/C System Inspection of ECM and
Its Circuits 1B-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A/C Compressor Drive Belt Inspection 1B-16 . . . . .
REFRIGERANT RECOVERY, EVACUATION
AND CHARGING 1B-17
. . . . . . . . . . . . . . . . . . . . . . . . .
Operation Procedure for Charging A/C with
Refrigerant 1B-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery 1B-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evacuating 1B-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging 1B-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Manifold Gauge Set 1B-21 . . . . . . . . . . .
Leak-Testing Refrigerant System 1B-21 . . . . . . . . . .
ON-VEHICLE SERVICE 1B-22 . . . . . . . . . . . . . . . . . . .
Note 1B-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A/C Condenser Assembly 1B-24 . . . . . . . . . . . . . . . .
Condenser Cooling Fan Motor 1B-25 . . . . . . . . . . . .
Receiver/Dryer 1B-26 . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling Unit 1B-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expansion Valve 1B-30 . . . . . . . . . . . . . . . . . . . . . .
A/C Evaporator Thermistor 1B-32 . . . . . . . . . . . . . . .
Refrigerant Pipes and Hoses 1B-33 . . . . . . . . . . . . .
Dual Pressure Switch 1B-34 . . . . . . . . . . . . . . . . . . . .
A/C Switch 1B-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A/C Condenser Cooling Fan Motor Relay
and A/C Compressor Relay 1B-35 . . . . . . . . . . . . .
Compressor Assembly 1B-35 . . . . . . . . . . . . . . . . . . .
Magnet clutch 1B-38 . . . . . . . . . . . . . . . . . . . . . . . .
Compressor 1B-41 . . . . . . . . . . . . . . . . . . . . . . . . . .
REQUIRED SERVICE MATERIALS 1B-50 . . . . . . . . .
SPECIAL TOOLS 1B-50 . . . . . . . . . . . . . . . . . . . . . . . . .
AIR CONDITIONING (OPTIONAL) 1B-1
SH410
SECTION 1B
AIR CONDITIONING (OPTIONAL)
CAUTION:
The air conditioning system of this vehicle uses refrigerant CFC-12 (R-12).
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 serv-
iced. Use of incorrect one will result in leakage of refrigerant, damage in parts or other faulty condi-
tion.
CONTENTS