A INSPECTION OF SOURCE CIRCUIT Turn ignition switch on. Is DOME fuse normal? No → Replace fuse. Is operation normal? No → Short circuit in wire harness between fuse and terminal 5 of computer. Yes Yes → Fuse faulty Is C/G fuse normal? No → Replace fuse. Is operation normal? No → Short circuit in wire harness between fuse and terminal 4 of computer. Yes Yes → Fuse faulty BACK DOOR S/W INSPECT GROUND CONNECTION Is there continuity between back door switch body and body ground? No → Body ground faulty. Yes INSPECT BACK DOOR SWITCH OPERATION Is there continuity between terminal 1 and body ground with back door switch turned on? No → Inspect back door switch. Yes BACK DOOR KEY S/W INSPECT GROUND CONNECTION Is there continuity between terminal 3 and body ground? No → • Open circuit in wire harness between terminal 3 and body ground. • Body ground faulty. Yes CONTINUED ON NEXT PAGE