Clearing Trouble Codes
Current trouble codes shown on the display are cleared by turning the ignition switch OFF after conducting self-diagnosis operation. Previous trouble codes, however, cannot be cleared since they are stored in the ECM memory which is operating on the back-up power supply. These trouble codes can be cleared by removing fuse 14 (located under the right lower portion of the instrument panel) or at least one minute.^ The No.14 fuse is located in the line to the memory back-up power supply of the TCM and ECM (MPFI). Removal of this fuse clears the previous trouble codes stored in the TCM and ECM (MPFI) memory.
^ Be sure to remove the No.14 fuse for at least the specified length of time. Otherwise, trouble codes may not be cleared.