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Troubleshooting Strange Electrical System Issues in Vehicles

Learn to fix crazy lights and electrical problems in vehicles easily. Check fuses, lights, bulbs, and connections to resolve issues. Stay calm and follow a systematic approach.

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Troubleshooting Strange Electrical System Issues in Vehicles

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Presentation Transcript

  1. Crazy Lights

  2. Feed Back

  3. Some very strange things can happen to the electrical system on a vehicle

  4. It may seem that you may have all kinds of short circuits to deal with

  5. C 290 BOTTOM NORMAL OPERATING LIGHT CIRCUIT

  6. BLOWN DOME LIGHT FUSE C 291 TOP

  7. BLOWN DOME FUSE WITH DOOR SWITCH CLOSED C 291 B0TT0M

  8. BRAKE LIGHT SWITCH CLOSED C 292 TOP

  9. CIGAR LIGHTER FUSE BLOWN C 292 BOTTOM

  10. OPENING DOOR CAUSES COURTESY LIGHT TO GO OUT AND DOME LIGHT GETS BRIGHTER C 293 TOP

  11. DOME AND COURTESY LIGHTS GO OUTWHEN BRAKES ARE APPLIED C 293 BOTTOM

  12. CORRODED TERMINALSCAUSE FEEDBACK C 294 TOP

  13. Keep calm! It is usually easier to fix than you first think.

  14. You might even make money on the deal

  15. Example • The dash, park, tail, light circuit • The Cigar lighter circuit • The courtesy light circuit Chrysler

  16. With a Systematic approach, “crazy Lights” problems can become simple problems.

  17. First, do not panic

  18. Keep in mind that whatever caused the problem, a feedback was created and electricity picked out a new path

  19. An easier way to go!

  20. Fouled-up or crossed wires is the least of your worries

  21. Start with the simple checks first

  22. Follow this procedure • Check for blown or missing fuses • Check all the lights • Are any to: • bright? • dim • Wrong bulbs? • Poor grounds?

  23. Follow this procedure • Check the body ground • to the chassis • back to the battery • Check for clean and tight electrical connections in the suspect area

  24. End

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