Power Mirrors wont work.
Thread Starter
Driver School Candidate
Joined: Aug 2009
Posts: 48
Likes: 1
From: BC
Power Mirrors wont work.
So i bought a 92 Ucf10 yesterday with every option on it. Great car and i love it. The only problem it has is the power mirrors dont work, both of them, and also the antenna is broken but i found a way to fix it after a search.
Anyways, im wondering if theres anyways to diagnose to see if its the motor in the mirror or if its something else like wiring. The heating elements in them DO work if that matter. Also the telescopic steering, power seats, and memory functions DO work, so i dont think its a problem with the second ecu.
If anyone has any input, please let me know.
Thanks!
Anyways, im wondering if theres anyways to diagnose to see if its the motor in the mirror or if its something else like wiring. The heating elements in them DO work if that matter. Also the telescopic steering, power seats, and memory functions DO work, so i dont think its a problem with the second ecu.
If anyone has any input, please let me know.
Thanks!
Driver
Joined: Jan 2011
Posts: 157
Likes: 0
From: ca
So i bought a 92 Ucf10 yesterday with every option on it. Great car and i love it. The only problem it has is the power mirrors dont work, both of them, and also the antenna is broken but i found a way to fix it after a search.
Anyways, im wondering if theres anyways to diagnose to see if its the motor in the mirror or if its something else like wiring. The heating elements in them DO work if that matter. Also the telescopic steering, power seats, and memory functions DO work, so i dont think its a problem with the second ecu.
If anyone has any input, please let me know.
Thanks!
Anyways, im wondering if theres anyways to diagnose to see if its the motor in the mirror or if its something else like wiring. The heating elements in them DO work if that matter. Also the telescopic steering, power seats, and memory functions DO work, so i dont think its a problem with the second ecu.
If anyone has any input, please let me know.
Thanks!
Trending Topics
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
Top 10 Most Confusing Things Lexus Has Ever Done!
Joe Kucinski
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles
Michael S. Palmer
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4
Joe Kucinski
8 Weirdest Things Lexus Has Ever Built
Verdad Gallardo
10 Lexus Designs That Have Aged Like Fine Wine
Verdad Gallardo
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Rookie
Joined: Dec 2010
Posts: 56
Likes: 1
From: Colorado
See the attached electrical circuit for a 1990 LS400. I am not positive if the circuit on your 92 is the same as a 90 but that’s all I have. If both mirrors are inop, then you need to look for a discontinuity in the circuit that is common to both the left and right side. I doubt all 4 mirror motors decided to fail at the same time.
The diagram shows four possible places where the left and right side have a common point - 1) the grey wire supplying power from the fuse to the switches, 2) the operation switch itself, 3) somewhere in the ground downstream of the switches or 4) the selector switch is inop and stuck in the neutral position.
There is a junction block in the ground path. Did you check that?
To do basic troubleshooting, I would start at one of the mirror connectors. It’s pretty easy to get the mirror off and access the connector. The mirror is held on with three screws, two screws are under the weatherstripping and a third screw is under the tweeter. At the connector, check to see if you get voltage when you operate the switches. If you do, then you probably have a problem in your ground path. If you don’t get voltage at the connector, then you have a problem in one of the switches or the power wire.
The diagram shows four possible places where the left and right side have a common point - 1) the grey wire supplying power from the fuse to the switches, 2) the operation switch itself, 3) somewhere in the ground downstream of the switches or 4) the selector switch is inop and stuck in the neutral position.
There is a junction block in the ground path. Did you check that?
To do basic troubleshooting, I would start at one of the mirror connectors. It’s pretty easy to get the mirror off and access the connector. The mirror is held on with three screws, two screws are under the weatherstripping and a third screw is under the tweeter. At the connector, check to see if you get voltage when you operate the switches. If you do, then you probably have a problem in your ground path. If you don’t get voltage at the connector, then you have a problem in one of the switches or the power wire.
Last edited by twofanman; Jan 30, 2011 at 03:56 PM. Reason: added troubleshooting advice
Thread Starter
Driver School Candidate
Joined: Aug 2009
Posts: 48
Likes: 1
From: BC
Well, i just went to check everything and they suddenly work again. Mind you, i havent driven this car since i bought it and i just had some time to check it out. Guess something might have been a little loose.
Thanks for all the help and information from everyone.
Thanks for all the help and information from everyone.
Rookie
Joined: Feb 2011
Posts: 70
Likes: 0
From: AZ
someone mentioned the fuse, and the diagram says radio 2 fuse. I dont see that in my owners manual. I see a mirror heater fuse.. but that just says its for the heater. Is there one fuse for the mirrors exclusivly?