Technical Headlight problem / relay diagram

Currently reading:
Technical Headlight problem / relay diagram

Stevenfairley

New member
Joined
Jun 21, 2016
Messages
2
Points
1
Heeeelllpp!
ahem.
I've got no dipped beam. I've checked the fuses and replaced the bulbs but can't find a diagram for the relays.
Are the stalk controls prone to illness?

Thanks!
Steve
 
You can find every schematic in Elearn.
Here is the schematic for side lights and dipped lights.
Schema_anabbaglianti.png

As you can see dipped-beams are turned on by relay T3 which is activeted by the body computer. It's located in the fuse box B001 in the engine bay.
 
Thanks for that. Where is the Elearn?
Something a miss between the relay and BCM.
Do you know much about themy for this car
 
You can find eLearn in this forum in Download page.

With a multimeter you'd check if between pins 85 and 86 of T3 there are 12V (pin 85 is connected to +12V and pin 86 is closed to earth by BCM when you turn the light on). If there are 12V the problem is the relay or something between the relay and the bulbs.

If BCM doesn't close pin 86 to earth you should focus on the stalk control H005: on pin 10 you have a 0V because it's connected to earth. On pin 10 you'll find 3 voltages: highest = light off, a smaller positive voltage = sideligths on, the smallest positive voltage = dipped beams on.
This because H005 works like a voltage divider.
 
Back
Top