| Table 1: | Engine Control Module (ECM) Scan Tool Output Controls |
| Table 2: | HVAC Control Module Scan Tool Output Controls |
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 PCM and activate or deactivate the cooling fan 1 relay, manually turning the low speed fans On and Off. |
Fan Relay 2 | 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. |
Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
Water Pump Relay | Miscellaneous Tests | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the HVAC control module, and activate or deactivate the after-boil relay, manually turning the after-boil coolant pump On and Off. |
