1990 fj1200 Clock issue

[MarioR]

Good afternoon, everyone.

On my FJ, the dashboard clock recently stopped working. My initial thought was that the LCD had failed, so I pulled the LCD from another working dash and swapped it in. However, after reinstallation, the clock still doesn't work. The backlight is on, but the LCD itself remains non-functional. It seems like there's an electrical issue somewhere. Does anyone have any ideas on where I could source a solution? Thanks!

[MarioR]

 Now the clock is working, but only when the ignition is on. When the ignition is off, the clock doesn't work. And another effect, when the ignition is off for a few minutes and I'm gonna turn it on, the clock, it's resetting itself to whatever, 12 o'clock.

quote author=MarioR link=msg=218874 date=1777238283]

Good afternoon, everyone.

On my FJ, the dashboard clock recently stopped working. My initial thought was that the LCD had failed, so I pulled the LCD from another working dash and swapped it in. However, after reinstallation, the clock still doesn't work. The backlight is on, but the LCD itself remains non-functional. It seems like there's an electrical issue somewhere. Does anyone have any ideas on where I could source a solution? Thanks!

[MarioR]

Hi everyone,

Here's an update on the issue I'm having.

Recently the clock on my dash stopped working. My first thought was that the LCD had failed, so I pulled everything apart and replaced it with a new LCD. Unfortunately, after the swap the clock still didn't work.

My next idea was to swap the entire dash with the one from my second FJ (that dash works perfectly). That also didn't solve the problem — the clock still didn't work.

So I started testing the LCD units directly, and both of them work when supplied with 12V.

Next, I checked the voltage on the harness plug (the one with four wires) and I'm only getting about 4–6V instead of the expected 12V, so that could potentially be the problem.

I inspected the entire front harness and so far I don't see any cracked, kinked, or corroded wires. I cleaned all connectors and reinstalled everything.

After putting everything back together, the clock does come on when the ignition is ON, but when the ignition is turned OFF the clock shuts off completely.

On my other FJs, the clock stays on all the time, and when the ignition is turned on the backlight activates.

Another issue is that after turning the ignition off, the clock resets itself after a few minutes.

Battery is good and charged. Holds the voltage so I don't see issue here.

Am I missing something???

Other than clock, everything works perfect on the bike. Harness is fully original untouched.

Has anyone experienced similar symptoms or know where I should be looking next?

Thanks.