Output Test Mode

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Output test mode allows the technician to activate most PCM output devices. Cooling fans can be activated independently of all other outputs. To access OUTPUT TEST MODE, turn ignition switch to OFF position. Ensure scan tool is properly connected. Program scan tool using the following steps:

Select vehicle and engine selection menu (optional).
Select year, engine, model and any additional information requested by scan tool.
Select DIAGNOSTIC DATA LINK.
Select GENERIC OBD-II FUNCTIONS.
Select PCM.
Select ACTIVE COMMAND MODES.
Select OUTPUT TEST MODE.
Turn ignition on.
Follow operating instructions from scan tester.
Command device(s) on or off (i.e., All ON, HIGH FAN, etc.).
Select START to activate output.
Select STOP to turn outputs off.