For 1990-2009 cars

#### Engine Control Module (ECM)

Scan Tool Output Control | Additional Menu Selection(s) | Description
--- | --- | ---
Fan Relay 1 | Cooling Fans | Control the low speed cooling fan relay ON/OFF. Both cooling fans will activate at low speed.
Fan Relays 2 and 3 | Cooling Fans | Control S/P relays and high speed fan relay ON/OFF. The driver side fan will turn off, and the passenger side fan will activate at high speed.
Fan Relays 1, 2 and 3 | Cooling Fans | Control low speed fan, high speed fan and S/P relays ON/OFF. Both fans will activate at high speed.