BPP does have a different set of contacts in it for the speed control part.
Speed control is a SPDT switch.
- Brake off is ground ( black wire ) is switched to the speed servo ( Red w/ light green stripe wire ).
- Brake on cab fuse panel fuse #15 ( white w/ yellow stripe wire ) is switched to the speed servo ( Red w/ light green stripe wire ).
-- This is looking at the EVTM cell 31 for the speed control, which usually shows the pedals as not pressed, and the internal switch is showing to ground.
The CSM for the autolock shows the circuit used is the same one for the CC ( the output of the Red w/ light green stripe wire ) is what triggers the CSM for the lock event.
The brake lamps themselves is cab fuse panel fuse #13 to Light Green w/ red stripe wire ) to light green wire.
Connector has 5 wires to it, and I seem to recall it is a 5 pin connector ( could be a 6 position connector, don't have a picture of C252 handy to check ).
Maybe time to check if half of the switch is holding up. I was figuring a plunger issue when cold, that is why I asked about the brake lamps.
Looks to be a contact issue in the switch itself, for only the CC section ?
Unplug the connector, and stick a meter probe in the white w/ yellow stripe wire position and Red w/ light green stripe wire position, and operate the brake pedal, to see if it is hanging up.
- Keep in mind you want the switch to be cold when you are doing this, just to replicate the issue.