PROCEDURE
(a) Reset the display settings (contrast and brightness) and check that the screen appears normal. OK: The display returns to normal.
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Toyota Tundra Service Manual > Can Communication System: Diagnosis System
DIAGNOSIS SYSTEM CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION (a) The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed to the vehicle. Connected to Code ECU/Se ...