Jump to content

300Tdi low coolant level warning - mystery component


Troll Hunter

Recommended Posts

This is my circuit although I drew the relay contact as normally open but it is the normally closed pins that are used. 
This means that when the level is OK, current flows and the relay is energised and the warning light stays off. 

Relay is an Omron G5V-1 which has very low current draw for the coil. This prevents burning of the reed switch in the cap through excessive current draw.

It has been in place for a year. As the power is applied at ignition-on though, the relay switches too quickly to be able to see the warning light flash as a circuit test.   I really need to modify it with a little delay timer.

 

D911DC27-5D91-41CC-83A7-CFD71F7B0BFA.jpeg

75872ACB-8910-4874-9689-548108928588.png

C724D84B-1C83-49A9-BC0B-FF1DAD3D9E44.jpeg

D198D645-07C1-42F7-A446-EE286951E613.jpeg

  • Like 1
Link to comment
Share on other sites

2 hours ago, Peaklander said:

This is my circuit although I drew the relay contact as normally open but it is the normally closed pins that are used. 
This means that when the level is OK, current flows and the relay is energised and the warning light stays off. 

Relay is an Omron G5V-1 which has very low current draw for the coil. This prevents burning of the reed switch in the cap through excessive current draw.

It has been in place for a year. As the power is applied at ignition-on though, the relay switches too quickly to be able to see the warning light flash as a circuit test.   I really need to modify it with a little delay timer.

 

D911DC27-5D91-41CC-83A7-CFD71F7B0BFA.jpeg

75872ACB-8910-4874-9689-548108928588.png

C724D84B-1C83-49A9-BC0B-FF1DAD3D9E44.jpeg

D198D645-07C1-42F7-A446-EE286951E613.jpeg

Sounds like a job for a 555?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy