View Single Post
Old 04-19-2019, 05:32 PM   #4
maslin
Benz Tech
 
Join Date: Dec 2018
Drives: 2017 BRZ Premium
Location: Oregon
Posts: 580
Thanks: 363
Thanked 562 Times in 308 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by jkr View Post
I was told when the brake light switch is removed, the lights should turn on. Is that incorrect?

As of right now the lights don't do anything whether or not there is contact or not. Sorry if I was a little unclear.
Switch shows normally open on the lamp side, normally closed to the ECU. Unplugged lights will be off, ECU will show off as well. Switch should test O.L on pins 1-2, 0.0 on pins 3-4. Unplugging the switch will set a fault since the switches can never both be open.


Fuse is at the top left, 7.5A.

Power goes through the noise filter, out to the stop lamp switch and back in. Then out to the grey distribution on the bottom left, to the modules and physical lamps.

Triangle lines on the bottom row are grounds. Lines that cross with no dots are not connected, lines that intersect with a dot are connected.

I would start with that fuse, labeled STOP.
Attached Images
 

Last edited by maslin; 04-19-2019 at 06:06 PM. Reason: Clarified wiring at switch.
maslin is offline   Reply With Quote
The Following 2 Users Say Thank You to maslin For This Useful Post:
jkr (04-19-2019), Ultramaroon (04-19-2019)