These are the connections to ground from the MFS, but what about the red/orange wire at the MFS/column ? That one should connect to ground with lights on/high beam selected. If not the switch is no good, if yes there is a wire break between the headlights and the switch.

 

is there a red / orange wire to test at the column plug ? I only tested the black/orange and light green wires at the column. They both tested with continuity to ground at the column. The red/ orange wire on the bulb plug tested zero continuity with the lights on/off and bright / dim.

 

And to rule out the switch, I changed it out with a brand new switch, still didn’t work. I also checked continuity between the red / orange wire coming out of the PDC and the cavity c on the plug with zero continuity. Assuming this was the same wire , which they looked identical. So that leads be to believe that there may be a break between the PDC and the bulb plug.

 

But, only with the headlights ON, right?

 

lights were off when checking the wire integrity between the PDC and the plug. Do the lights need to be on to correctly check this?

 

Further testing:
lights ON =no continuity between PDC and plug on red/orange

pin to pin =
red /orange to middle wire breaks continuity when using the MFS and lights on.

 

Bad MFS.

 

new switch, same results.

 

Test the red/orange wire between the headlamp connector, and the MFS for continuity. If it isn't the switch itself, has to be a break in that wire somewhere.

 

with the switch connected and lights on, correct?