Pontiac FIREBIRD 1972 Service Manual page 67

1A-8 1972 PONTIAC SERVICE MANUAL
SELECT LEVER VALVE
YELLOW
UPPER MODE DOOR
4
VAC
-
A/C
RED
VENT-HTR
LOWER MODE DOOR
k h 7 0
VAC VENT-HTR
-
A/C
1-2 MIN.-DOOR CLOSE
RESERVOIR
AIR INLET DOOR VAC
-
RECIRC. AIR
PURPLE
30-60 SECONDS-DOOR OPEN
(DOOR
VAC FULL DOWN)
D"ROsT
'
I
ORANGE VENT
-
OUTSIDE AIR
VENT
-
OPEN
TEMP LEVER VALVE
'DEFROST DOOR
TEMP LEVER VALVE & SWITCH
PORT PORT TEMP LEVER POSITION
NO. CONN COLD
1
H.W.V. VAC VAC
I
VENT
2
R.A. O'RIDE V AC VENT
I
VENT
3 INPUT (CHECKED) VAC VAC
I
VAC
RECIRC O'RIDE SWITCH CLOSED OPEN CLOSED)
-- -
-
Fig. 1A-7 A/C Vacuum Schematic
-
B Series