Toyota Tundra Service Manual > Windshield Deicer System: Windshield Deicer does not Operate
DESCRIPTION When the air conditioning control assembly (windshield deicer switch) turns is turned on, a windshield deicer activation request signal is sent via the LIN communication line to the air conditioning amplifier. Then the air conditioning amplifier operates the windshield deicer. WIRING DIA ...
