Using Auto-cruise Control Indicator Light

Turn the ignition switch to the "ON" position while holding the auto-cruise control switch in the "SET" position (down). Then, within one second, move the auto-cruise control switch up to the "RES" position. See Fig 1.

Fig 1: Identifying Auto-Cruise Control Switch Positions
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Read diagnostic trouble code by observing the flash display pattern of the auto-cruise control indicator light in the combination meter. See Fig 2.

Fig 2: Identifying Auto-Cruise Indicator Light Flash Display Patterns
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.