GM Service Manual Online
For 1990-2009 cars only

ECM Scan Tool Output Controls For Auxiliary Coolant Heater (LLY) Diesel

Scan Tool Output Control

Additional Menu Selection(s)

Description

Glow Plug

Auxiliary Heater Output Controls

The scan tool displays a Commanded State of Off or On. This allows you to communicate with the ECM and activate or deactivate the glow plug, manually turning the glow plug ON and OFF.

Fuel Pump

Auxiliary Heater Output Controls

The scan tool displays a Commanded State of Off or On. This allows you to communicate with the ECM and activate or deactivate the fuel pump, manually turning the fuel pump ON and OFF.

Blower Motor

Auxiliary Heater Output Controls

The scan tool displays a Commanded State of Off or On. This allows you to communicate with the ECM and activate or deactivate the blower motor, manually turning the blower motor ON and OFF.

Auxiliary Heater

Auxiliary Heater Output Controls

The scan tool displays a Commanded State of Off or On. This allows you to communicate with the ECM and activate or deactivate the auxiliary heater, manually turning the auxiliary heater ON and OFF.

Prime Fuel Pump

Auxiliary Heater Output Controls

The scan tool displays a Commanded State of Off or On. This allows you to communicate with the ECM and activate or deactivate the prime fuel pump, manually turning the prime fuel pump ON and OFF.