Cartridge Error
- If CARTRIDGE ERROR message is displayed, disconnect DRB-II from transmission diagnostic connector. DO NOT touch keys on DRB-II keypad. Reconnect DRB-II to transmission diagnostic connector and note display.
- If CARTRIDGE ERROR message is displayed, replace DRB-II cartridge and proceed with diagnostics. If KEYPAD TEST FAILURE message is displayed, replace DRB-II and proceed with diagnostics.