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HVAC
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c) CLOSED DOOR TEST
TEST DURATION: 10 min.
INITIAL VEHICLE CONDITIONS
The following conditions to be confirmed before start-
ing the test:
Vehicle stationary with all doors closed
Engine Speed
1500 rpm
FOR MANUAL HVAC
Front Blower Speed
4
th
AC Switch
ON
Temperature Knob
Max. Cool
Vent Knob
Chest
Air Intake
Recirculation air mode
Run the vehicle in the above condition with all doors
closed for 10 min. At the end of 10 min insert the
probe at the front vent and record the readings simi-
larly insert the probe at the rear vent and record the
reading.
The readings of front and rear vents should be as
per the table given below:
VENT
AMBIENT TEMPERATURE
< 30ºC
(RH up
to
40%)
30–35ºC
(RH up
to 40%)
35-40ºC
(RH up
to 40%)
Above
40 º C
(RH up
to 40%)
FRONT
9 C
11 C
16 º C
21º C
REAR
9º C
11º C
16º C
20º C
RH:
Relative Humidity.
NOTE
The above table is applicable if the ambient RH
is 40%.
For RH higher than 40% refer the graph below
for acceptable temperatures:
FRONT VENT