- DISABLED DayTime Running Lights How To- 2007 Yaris! -

[Kaya B.]

Originally Posted by CTScott

When you say nothing changed, do you mean that the running lights still remained on?

yes, daytime running lights are still on :(

[CTScott]

Originally Posted by Kaya B.

yes, daytime running lights are still on :(

OK. Do you have a volt meter? That pin is definitely the one that controls turning the running lights on or off. For the US version of that module, letting that pin float (cutting the wire) works. For your version, if we can measure the voltage from the blue wire to the chassis ground with the engine running and with the headlights off and then with them on, we can figure out if that pin needs to be tied high or low on your module.

[Kaya B.]

Originally Posted by CTScott

OK. Do you have a volt meter? That pin is definitely the one that controls turning the running lights on or off. For the US version of that module, letting that pin float (cutting the wire) works. For your version, if we can measure the voltage from the blue wire to the chassis ground with the engine running and with the headlights off and then with them on, we can figure out if that pin needs to be tied high or low on your module.

yes, thats already in my mind. i'll check the pins with voltmeter.
but i'm back from holiday i don't know when can i find time to try :(

thanks for everything. i'll give information again when i'm done.

[CTScott]

Originally Posted by Kaya B.

yes, thats already in my mind. i'll check the pins with voltmeter.
but i'm back from holiday i don't know when can i find time to try :(

thanks for everything. i'll give information again when i'm done.

I found some more info in the European service manual. The wire I had you clip gets grounded when the headlight switch is turned on, to tell the module to stop the DRL mode.

One more quick test you could try is to take the DRL module side of the wire you cut (and then reattached) and connect it to a chassis ground.