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BE-78 BODY ELECTRICAL SYSTEM — Cruise Control System D INSPECTION OF STOP LIGHT SWITCH CIRCUIT Turn ignition switch on. Is stop fuse normal? No • Short circuit in wire harness between terminal 8 of computer and fuse. • Short circuit in wire harness between terminal 9 of computer and fuse. Yes COMPUTER Disconnect computer and inspect connector on wire harness side as follows. INSPECT RELEASE VALVE CIRCUIT Is there continuity between terminal 1 and 2 with brake pedal depressed? Yes Inspect stop light switch. No INSPECT STOP FUSE CIRCUIT Is there battery voltage between terminal 9 and body ground? No Open circuit in wire harness between terminal 9 of computer and STOP fuse. Yes INSPECT STOP LIGHT SWITCH CIRCUIT Is there battery voltage between terminal 8 and body ground with brake pedal depressed? No Open or short circuit in wire harness between terminal 8 of computer and terminal 2 of stop light switch. Yes Replace computer.