AT
AT
AT
AT Air
Air
Air
Air Conditioner
Conditioner
Conditioner
Conditioner
- 171 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
A/C
A/C
A/C
A/C system
system
system
system performance
performance
performance
performance testing
testing
testing
testing
9. The engine hood is closed.
10. Connect the precision pressure gauge to A/C
system .
11. As for the precise testing of humidity (relative
humidity %), the pressure and temperature of air
supply outlet shall vary with humidity (relative
humidity %). P lease refer to “ A/C System
Performance Table ” in this section for details.
12. Shut down the engine. C ompare the readings with
data listed in “ A/C System Performance Table ” and
no big difference can be found under normal
operation of A/C system .
The best status
Normal
In need of maintenance
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