| Table 1: | Body Control Module (BCM) |
| Table 2: | Powertrain Control Module (PCM) 3.1L (LG8) |
Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
Display(s) Test | Miscellaneous Test | The BCM sends a command to the instrument panel (IPC) via the serial peripheral interface (SPI) to set all gauges to half scale and to turn on all indicators when you select On. |
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 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 S/P relay and the cooling fan 2 relay. This turns the high speed fans On and Off. |
