Operational Instructions; Service Procedures; In-Car Sensor - Pontiac FIREBIRD 1972 Service Manual

AUTOMATIC TEMPERATURE CONTROL 1 B-43
7. Move blower switch to LO range.
A. Blower speed and air flow decrease.
OPERATIONAL INSTRUCTIONS
the system off. The Automatic Temperature Control Sys-
tem will automatically operate whenever the car is started;
starting almost immediately in warm weather, but delay-
ing operation in cold weather until heat is available from
the engine cooling system. Moving the system selector
lever to the DEFROST (DEF) mode overrides the auto-
matic control and directs'maxikum available heat toward
After initial settings are made, it is not necessary to turn
the windshield.
SERVICE PROCEDURES
The refrigeration portion of the ATC system is the same
5. Remove sensor.
as the Custom Air Conditioning system and can be ser-
viced by referring to Section 1A.
6. To replace, reverse removal procedure.
IN-CAR SENSOR
For installation, see Figs. 1B-42 (B Series) and 1B-43 (G
Series).
REMOVE AND REPLACE
1. Remove glove box (cold air duct on G Series with
console).
AMBIENT SENSOR
2. Disconnect wire connector from sensor.
REMOVE AND REPLACE
3. Disconnect aspirator hose from sensor.
4. Remove retaining screws.
1. Remove ambient sensor and switch connector (2 con-
nectors on G Series) or ambient sensor connector (B
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Fig. 18-42 8 Series Programmer Installation