B2578 and B2583 after switchback LEDs
Thread Starter
Le Mans Master
Joined: Oct 2003
Posts: 6,126
Likes: 19
From: Streamwood illinois
B2578 and B2583 after switchback LEDs
I know this states short to ground. Everything works fine, should I just disregard this? I also put in LEDS in the rear at the same time (Euro lights).
I do have an LED flasher wired in to the pink/purple w/ a 1A diode on the pink wire.
Dave
I do have an LED flasher wired in to the pink/purple w/ a 1A diode on the pink wire.
Dave
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 890
From: South Western Ontario
I believe it is actually a short to power. The BCM circuits that monitor the front signal lights are giving the error. I believe they look for an oscillating signal from the flasher and use that to cycle the DRL on and off. Not sure why you're having this issue any more than you had that backfeed issue on the rear lights. Almost sounds like the switchbacks are feeding voltage back into the wire from the signal switch when the signals are off.
Thread Starter
Le Mans Master
Joined: Oct 2003
Posts: 6,126
Likes: 19
From: Streamwood illinois
The odd thing is that I fixed the back feeding of hitting brakes w/ a diode in back. I fixed the back feeding when turning on turn signals with 4 ways on w/ car off w/a diode at the LED flasher. So I don't know if it's the switchbacks or some other LED
Dave
Dave
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 890
From: South Western Ontario
It's a completely different thing. It's the BCM monitor circuits looking at power from the LF and RF turn signal wires (dark blue and light blue) coming out of the turn signal switch. The error codes appear if the BCM sees power on those wires for too long a period of time.
The monitor is used to turn-off the DRL when the signal is turned on. It looks for an oscillating signal to appear. If the monitor stays on or at 12V then the BCM assumes there is something wrong with the car since the input should be either 0V or switching between 0V and 12V.
So once again, did you mess with the DRL relays or the DRL operation?
The monitor is used to turn-off the DRL when the signal is turned on. It looks for an oscillating signal to appear. If the monitor stays on or at 12V then the BCM assumes there is something wrong with the car since the input should be either 0V or switching between 0V and 12V.
So once again, did you mess with the DRL relays or the DRL operation?
Last edited by lionelhutz; May 22, 2015 at 05:49 PM.
