B Series Programmer - Pontiac FIREBIRD 1972 Service Manual

AUTOMATIC TEMPERATURE CONTROL 1B-53
Fig. 18-52 G Series Potentiometer Adjustment
Connect ATC Tester
J
23678 into the ATC wiring
harness and the programmer.
Place control panel selector lever in VENT
Place Manual-Automatic switch on tester in the
MANUAL position.
Place the Temperature Dial Calibrator switch on the
tester in the CAL. position.
Note the voltmeter reading on tester.
Press "COMPARE" button and note voltmeter read-
ing.
With the "COMPARE button pressed in, rotate the
temperature dial on the control panel until the voltm-
eter reading is the same as it was in step 5 (button not
pressed in).
The control panel temperature dial should be set at
the temperature dial setting on the tester panel
("75"). If it does not, use tool J 21530 (Fig. 1B-53)
to hold the gear on the left side of the temperature
dial and slip the dial to the correct setting. If the
temperature dial cannot be calibrated using this
procedure, it is defective.
B SERIES PROGRAMMER
REMOVE AND REPLACE
1. Disconnect battery.
7
1
J 21516 TEMPERATURE
DIAL ADJUSTMENT TOOL
I
I
Fig. 18-53 8 Series Temperature Dial Adjustment