Toyota Tundra Service Manual > Lighting System: Headlight Dimmer Switch Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) receives the following signals: Light control switch in off*1, DRL-Off*2, tail, head or Auto position Headlight dimmer switch in high, low or high flash (pass) position Fog light switch front position*3 *1: w/o DRL Off Switch *2: w/ DRL Off ...
