LS400 Combi Meter Circuit Board / ECU Issue
11-14-18, 08:24 PM
#1
Driver School Candidate
Thread Starter
Join Date: Nov 2018
Location: Vic
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
LS400 Combi Meter Circuit Board / ECU Issue
Hello,
I am posting this on behalf of a family friend and I would like some assist.
He has a RHD '95 LS400, low km's and recently the combi meter has stopped working. The dealer has stated the board in the combi meter has failed. Part number 83291-50180.
Unfortunately, Toyota AU has not been able to source a replacement part (currently, still under investigation). He has tried a few parts from wreckers but that have also failed in a similar fashion.
I was hoping to get some advise on where to go to from here. Willing to look overseas for fix's to this problem.
Thanks
I am posting this on behalf of a family friend and I would like some assist.
He has a RHD '95 LS400, low km's and recently the combi meter has stopped working. The dealer has stated the board in the combi meter has failed. Part number 83291-50180.
Unfortunately, Toyota AU has not been able to source a replacement part (currently, still under investigation). He has tried a few parts from wreckers but that have also failed in a similar fashion.
I was hoping to get some advise on where to go to from here. Willing to look overseas for fix's to this problem.
Thanks
11-15-18, 02:19 AM
#2
Moderator
I once had seen this post but he has never been coming back and I have no idea to know the result. But generally speaking, electrolytic capacitors cause the problem prior to other components.
What I can say is that electrolytic capacitors lose the capacitance and increase the impedance/ESR in accordance with the Arrhenius equation as time goes on.
A smart guy will find failed ones measuring the ESR and replace them. It would be easy and quick to use an ESR meter to find failed ones. Many ESR meters can check the ESR without removing the capacitor. All you need is just attach test leads to the target capacitor. See the link below and you'd find the actual way to do with the great Australian accent which must be familiar to you. To me, it's a bit hard to catch all but I managed to understand him. Since he is speaking diffusely and I suggest you to watch the video starting 5:30. If an ESR meter was not available, simply to replace all the electrolytic capacitors would be an idea since a 95 is already 23 years old.
What I can say is that electrolytic capacitors lose the capacitance and increase the impedance/ESR in accordance with the Arrhenius equation as time goes on.
A smart guy will find failed ones measuring the ESR and replace them. It would be easy and quick to use an ESR meter to find failed ones. Many ESR meters can check the ESR without removing the capacitor. All you need is just attach test leads to the target capacitor. See the link below and you'd find the actual way to do with the great Australian accent which must be familiar to you. To me, it's a bit hard to catch all but I managed to understand him. Since he is speaking diffusely and I suggest you to watch the video starting 5:30. If an ESR meter was not available, simply to replace all the electrolytic capacitors would be an idea since a 95 is already 23 years old.
Last edited by Yamae; 11-15-18 at 02:47 AM. Reason: To adivice what should be watched.
Thread
Thread Starter
Forum
Replies
Last Post