Suzuki Liana RH413, Service Manual

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7B-45 Air Conditioning System: Automatic Type
Abnormal Noise Symptom Diagnosis of A/C
System
S3RH0A7224002
Refer to “Abnormal Noise Symptom Diagnosis of A/C
System”.
DTC Check
S3RH0A7224003
Using SUZUKI Scan Tool
1) Turn ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector
(DLC) (1) located on underside of instrument panel
at driver’s seat side.
Special tool
(A): SUZUKI scan tool
3) Light over sunload sensor vertically with an
incandescent lamp of approximately 60 W apart from
about 100 mm (3.94 in.).
NOTE
If sunload sensor is not lighted over with an
incandescent lamp, DTC B1504 is detected
even though there is not any malfunction.
4) Turn ignition switch to ON position.
5) Read DTC displayed on SUZUKI scan tool.
NOTE
To know how to use SUZUKI scan tool, refer
to operator’s manual for SUZUKI scan tool.
Cool air comes out only at
high speed Condenser clogged Check condenser referring to “Condenser
Assembly Inspection”.
Insufficient charge of refrigerant Check amount of refrigerant charged.
Air in A/C system Replace desiccant, and perform evacuation
and charging.
Compressor drive belt loosen or broken Replace compressor drive belt.
Compressor faulty Check compressor.
Cool air does not come
out only at high speed Excessive charge of refrigerant Check amount of refrigerant charged.
A/C evaporator frosted Check A/C evaporator and A/C evaporator
outlet air temperature sensor referring to “A/C
Evaporator Inspection” and “A/C Evaporator
Outlet Air Temperature Sensor Inspection”.
Insufficient velocity of
cooled air A/C evaporator clogged or frosted Check A/C evaporator and A/C evaporator
outlet air temperature sensor referring to and
“A/C Evaporator Inspection” and “A/C
Evaporator Outlet Air Temperature Sensor
Inspection”.
Air leaking from cooling 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 Check wiring and grounding.
Condition Possible cause Correction / Reference Item
(A)
1
I3RH0A710005-01