A INSPECTION OF SOURCE CIRCUIT Turn ignition switch on. Is ECU fuse normal? No → Replace fuse. Is operation normal? No → • Short circuit in wire harness between fuse and terminal 3 of main switch. • Inspect control switch. Yes → Fuse faulty. Yes ↓ MAIN S/W INSPECT POWER SOURCE Is there battery voltage between terminal 1 of main switch and body ground? No → Open circuit in wire harness between fuse and terminal 1 of main switch. Yes ↓ INSPECT GROUND CONNECTION Disconnect connector from main switch. Is there continuity between terminal 5 of wire harness side connector and body ground? No → • Open circuit in wire harness between terminal 5 of main switch and body ground. • Body ground faulty. Yes ↓ INSPECT SWITCH OPERATION Is there battery voltage between terminal 3 and body ground with main switch turn on? No → Inspect main switch. Yes ↓ CONTROL S/W INSPECT GROUND CONNECTION Disconnect connector from control switch. Is there continuity between terminal 14 of wire harness side connector and body ground? No → Open circuit in wire harness between terminal 14 of control switch and body ground. Yes ↓ INSPECT SET/COAST SWITCH OPERATION Is there continuity between terminal 30 and body ground with set/coast switch turned on? No → Inspect control switch. Yes ↓ CONTINUED ON NEXT PAGE