Output Test Mode

This mode allows a technician to energize and de-energize most of the system output actuators on command. After accessing OUTPUT TEST MODE, outputs and cooling fans can be turned on and off separately.

To access OUTPUT TEST MODE, turn ignition switch to OFF position. Ensure test equipment is properly attached. Program scan tool using the following steps:

• Select vehicle and engine selection menu. See Figure.
• Select year, engine, model and any additional information requested by scan tool.
• Follow operating instructions from scan tool menu.
• Select DIAGNOSTIC DATA LINK.
• Select PCM - POWERTRAIN CTRL MODULE.
• Select DIAGNOSTIC TEST MODE.
• Select ACTIVE COMMAND MODE.
• Select OUTPUT TEST MODE.
• Turn ignition on.
• Follow operating instructions from scan tool menu.
• Select either LOW SPEED FAN, HIGH SPEED FAN or ALL ON mode.
• Select START to turn outputs on. This step may cause link up to PIDs.
• Select STOP to turn outputs off.