Operation CHARM
: Car repair manuals for everyone.
Home
>>
Chevrolet
>>
1999
>>
Lumina V6-3.8L VIN K
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Computers and Control Systems
>>
Testing and Inspection
>>
Scan Tool Testing and Procedures
>>
Scan Tool Data, Normal Values and Definitions
>>
Scan Tool Data Definitions - Powertrain Systems
>>
Commanded Fan 1 / Commanded Fan 2
Commanded Fan 1 / Commanded Fan 2
Scan Tool Displays ON or OFF. The Commanded Fan 1 and Commanded Fan 2 displays represent the PCM commanded state of the fan 1(low speed) and tan 2 (high speed) control circuits.