Accessing Output Test Mode
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 & ENGINE SELECTION menu.
- Select NEW VEHICLE, YEAR & MODEL.
- Follow operating instructions from scan tool menu.
- Select DIAGNOSTIC DATA LINK.
- Select POWERTRAIN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select ACTIVE COMMAND MODE.
- Select OUTPUT TEST MODE.
- Turn ignition switch to ON position.
- Follow operating instructions from scan tool menu.
- Select START to turn outputs on.
- Select STOP to turn outputs off.
- Select either LOW SPEED FAN, HIGH SPEED FAN or ALL ON mode.