Swanepoel
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Hi All
I stumbled onto this as the best answers on all of the web. So I propmtly joined. I'm from Cape town South Africa.
Landy: 2003 Td5
Problem: indicators stopped working with only a buzzing coming from the flasher relay. So as per the thread info,
I did the following tests.
(Ignition off)
- Bridge purple to green-red and green-white = all good, indicator lights comes on
- Bridge purple to lightgreen and using the indicator stalk = indicators are flashing L and R respectively
That means wiring to indicator lights is fine; Flasher relay is fine. Could be faulty Hazard switch..
Next test.
(Ignition on)
- Bridge darkgreen (white green on td5) with lightgreen and using indicator stalk = buzzing L and R
That means the light switch supply has an issue. And implies that the hazard switch is fine.
Next test
(Ignition on)
- Multi tester voltage from earth (- on sigarette lighter) to darkgreen (white green on td5) reads 11.something V..
- Multi tester voltage from earth to purple reads 12.something V
Conclusion: The light switch supply (darkgreen (white green on td5)) has a voltage drop or bad connection. I'm sure 11V is enough to power the flasher relay and I can't see how that line could have a voltage drop. So, a bad connection is my guess.
As per C18RCH's diagram this line runs straight to use box. Which I will check now.
- To the contributors (especially LandyManLuke) thanks for a helpful thread
- Thought my thought process could ad to the knowledge pool of likely problems and solutions for others
- And if my thought process is wrong, help would be appreciated
- And if my thought process is right, help would still be appreciated
Hazard Switch & Indicators - fault diagnosis
in Defender Forum (1983 - 2016)
Posted
Report:
I found the problem 10min later.
I tested all the fused much earlier, but without removing them. (mistake)
I traced the line form the fuse box to the hazard switch, running my thumb nail over the wire to feel for a kink or break in the conductor. Nothing. Then I found that the wire going into the back of the fuse box caused the relay to respond if wiggled; buzzing, stopping and then working fine.
It turned out that the previous owner, about 10 years ago, wound a single strand of copper wire around the fuse legs to mend a broken fuse. After all these years it had been working fine, untill now. It seems like there is just enough oxidation or gap to cause a bad connection that manifested as the voltage drop. Put in a new fuse: fixed.
Re mount the fuse box, put all the wiring back in place, and taped up. Re assemble the whole dash and console.. What a big opperation for a small problem.
Lesson: Check the fuses properly by removing them one at a time..