CHECK MODE PROCEDURE 1. LIST OF OPERATION METHODS By operating each of the A/C control switches as shown in the diagram below, it is possible to enter the diagnostic check mode. ![]() |
Toyota Tundra Service Manual > Lighting System: DRL Relay Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the daytime running lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure. PROCEDURE 1. PERFORM ACTIVE TEST USING TECHSTREAM (a) Using ...