FD5 - Verify Brake Switch Is Not Always Closed

- Key "OFF".

- Brake switch disconnected.

- Key "ON", engine "OFF".

- Are stoplamps still on?

Yes -- Go to FD6. FD6 - Check For Short to Power In PCM

No -- Verify proper installation of brake switch. If OK, replace brake switch. Reconnect harness connector. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)