Scan Tool Output Controls
Powertrain Control Module (PCM) 3.4 Liter LA1 Scan Tool Output Control
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| Fans Low Speed | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the powertrain control module (PCM) and activate or deactivate the cooling fan 1 relay, manually turning the low speed fans On and Off. |
| Fans High Speed | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the PCM to activate or deactivate the cooling fan 1 relay, manually turning the low speed fans On. After a 3 second delay the PCM will activate the cooling fan 2 relay and the cooling fan 3 relay. This turns the high speed fans On and Off. |
Engine Control Module (ECM) 3.6L LY7 Scan Tool Output Control
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| Fan Relay 1 | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the electronic control module (ECM) and activate or deactivate the cooling fan 1 relay, manually turning the low speed fans On and Off. |
| Fan Relays 2 and 3 | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the ECM to activate or deactivate the cooling fan 2 and 3 relays, manually turning the medium speed fans On. |
| Fan Relays 1, 2 and 3 | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the ECM to activate or deactivate the cooling fan 1, 2 and 3 relays, manually turning the high speed fans On. |