Jump to content

corrado vr6 1995 temp guage problem

Recommended Posts

temp guage is not working on my corrado 1995. it has 3 sensors, yellow 4 pin, blue 2 pin, black 2 pin.
from what i gather, correct me if im wrong its the blue white wire on the yellow 4 pin connector i need to be looking at?
thers no votage on the blue white wire, i assume if it had voltage and was grounded temp should show max? similar to the fuel level sender.

is there a dedicated fuse for this circuit? i looked at cluster whires but they are all white so makes it hard to isolate a wire problem.

Link to post
Share on other sites

You are correct - it is the blue wire on the yellow sender. The Black sender is to tell the ECU the temperature.


These sensors vary their resistance according to temperature - when cold there will be a big resistance, when hot there will be a low resistance.

Guage and Instrument Testing with Special Tool VW 1301 (bentleypublishers.com)


To prove the gauge works, short pins 2 and 3 on the yellow connector with a paper clip (or similar) and see if the gauge indicates full hot.


Once the gauge works, check the resistance across pins 2 and 3 of the yellow sensor when the engine is cold and again when the engine is warm and see if there is any difference. There won't be 12volts across it.



Have fun!

Link to post
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.

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...