lemon-mirror
:
Home
>>
Pontiac
>>
1981
>>
Firebird Esprit
>>
Repair and Diagnosis
>>
Engine Performance
>>
Engine Control Systems
>>
Computer Command Control
>>
Operation
>>
Electronic Control Module (ECM)
>>
Power Supply
Power Supply
Main source of power for the ECM is from the battery, through the No. 1 ignition circuit.