| 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 |
|---|---|---|
Aux Cooling Fan, Export vehicles only | 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 auxiliary cooling fan relay, manually turning the auxiliary cooling fan On and Off. |
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 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 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. |
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 PCM to activate or deactivate the cooling fan 2 relay and the cooling fan 3 relay. This turns On the left cooling fan only to high speed. |
Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
Display(s) Test | Output Control | the scan tool displays a Commanded State of None, Off, or On. This allows you to communicate with the Instrument Panel Cluster (IPC) and manually turn all segments and LEDs of the IPC On or Off. |
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 afterboil relay, manually turning the afterboil coolant pump On and Off. |
