Suzuki Grand Vitara 2005 Owner's Manual

Air Conditioning System: 7B-28
Abnormal Noise Diagnosis
S5JB0A7204002
There are various types of noise, ranging from those produced in the engine compartment to those from the
passenger compartment, also from rumbling noises to whistling noises.
Abnormal Noise Symptom Diagnosis of A/C System
S5JB0A7204026
Abnormal Noise from Compressor
Cool air does not come
out only intermittently
Wiring connection faulty Repair as necessary.
Expansion valve faulty Check expansion valve referring to “Expansion
Valve On-Vehicle Inspection: ”.
Excessive moisture in A/C system Replace desiccant, and then perform
evacuation and charge referring to “Operation
Procedure for Charging A/C with Refrigerant: ”.
Magnet clutch faulty Check magnet clutch referring to “Magnet
Clutch Operating Check for M16 Engine
Model: ” or “Magnet Clutch Operating Check
for J20 Engine Model: ”.
Excessive amount of refrigerant Check the amount of refrigerant.
Cool air comes out only at
high speed
Condenser clogged Check condenser referring to “A/C Condenser
Assembly On-Vehicle Inspection: ”.
Insufficient charge of refrigerant Check the amount of refrigerant and system
for leaks.
Air in A/C system Replace desiccant, and then perform
evacuation and charge referring to “Operation
Procedure for Charging A/C with Refrigerant: ”.
Compressor drive belt loosened or
broken
Adjust or replace drive belt.
Compressor faulty Check compressor.
Cool air does not come
out only at high speed
Excessive amount of refrigerant Check the amount of refrigerant.
A/C evaporator frosted Check A/C evaporator and evaporator
temperature sensor referring to “A/C
Evaporator Inspection: ” and “A/C Evaporator
Temperature Sensor Inspection: ”.
Insufficient air flow of
cooled air
A/C evaporator clogged or frosted Check A/C evaporator and evaporator
temperature sensor referring to “A/C
Evaporator Inspection: ” and “A/C Evaporator
Temperature Sensor Inspection: ”.
Air leaking from HVAC unit or air duct Repair as necessary.
Blower motor faulty Check blower motor referring to “Blower Motor
Inspection: in Section 7A”.
Wiring or grounding faulty Repair as necessary.
Condition Possible cause Correction / Reference Item
Condition Possible cause Correction / Reference Item
During compressor
operation, a rumbling
noise is heard
proportional to engine
revolutions
Inadequate clearance in scroll area Replace compressor.
A loud noise is heard at a
certain rpm,
disproportionately to
engine revolution
Loose or faulty compressor drive belt Adjust drive belt tension or replace drive belt.
Loose compressor mounting bolts Retighten mounting bolts.
A loud rattle is heard at
low engine rpm
Loose compressor armature plate bolt Retighten armature plate bolt.
Replace compressor if it was operated in this
condition for a long time.

Suzuki Grand Vitara 2005 Specifications

General

Brand	Suzuki
Model	Grand Vitara 2005
Category	Automobile
Language	English