Firebird V8-305 5.0L VIN F FI (1987)
5.
This test checks the ability of the ECM to ground CKT 335. The SES light should also be flashing, at this point. If it isn't flashing, see CHART
A-2.
6.
If the fan does not turn "ON", at this point, CKT 936 or CKT 150 is open, or the cooling fan motor is faulty.