Instructions
Unplug all DualShock 2 controllers from the PlayStation 2 console.
Remove any dust or debris from the controller plug and wait for three to five seconds.
Reinsert the plug of a single controller firmly into the first controller port.
Press the "Analog" button in the center of the controller. If the red analog LED turns on, the controller has been reconnected properly. If the light does not turn on, repeat the steps listed above.
Repeat Steps two through four for each controller until all controllers are reconnected.