PROCEDURE
(a) Check that the display is not in screen off mode. OK: The display setting is not in screen off mode.
(a) Check that the screen color quality can be set. OK: Setting is possible.
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Toyota Tundra Service Manual > Touch Select 2-4 And High-low System: Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION The 4 wheel drive control ECU records DTCs when the ECU detects a malfunction in the ECU itself or in system circuits. The DTCs can be read through the DLC3 of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and pe ...