This video is all about lighting system diagnosis. THIS VIDEO SHOULD HELP LIGHT THE WAY! In this video I go over how to test a fuse, how to test a bulb, how to check and test a relay, reading a wiring diagram. Specifically the fog light system on a BMW E46 with full diagnostic steps to check the entire system.This video will help you understand basic electrical diagnosis steps and can be applied to other problems and vehicle electrical failures. Short To Power, Short To Ground, Open in Wiring, Wire Chafing, Bad Relay, Relay Testing, Basic Electrical Testing
This video also includes How To Remove The Lamp Module On A BMW E46
Chapters:
00:00 - Intro
00:16 - How To Use A Power Probe And Test A Bulb
02:13 - Wiring Diagram Basics Fuse Relay Wiring
04:14 - Checking A Fuse
06:18 - Checking A Relay Explained Using Wiring Diagram
07:17 - Removing The Module Carrier To Access The Relay
09:15 - Relay Testing At Relay Holder
12:02 - Wire Testing For Break Or Open In Wire Explained
12:30 - How To Test And Activate The Relay
13:13 - Removing The Lamp Module BMW E46
14:40 - Finding The Cause Of The Problem (The Bug Revealed)
15:06 - How To Test A Wire For An Open Or Break In The Wire
16:18 - Fixing The Bug And How To Remove Pins From A BMW Connector
18:13 Fog Light Circuit Restored and Working
