DTC 31 & 32: SRS Ecu Capacitor
WARNING: This page is about a different car, the 2003 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
If DTC 31 or 32 is present, replace SRS ECU. See SRS ELECTRONIC CONTROL UNIT (SRS ECU) under REMOVAL & INSTALLATION.