HOW TO PROCEED WITH TROUBLESHOOTING HINT: This is a flowchart for vehicle pull. 
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Toyota Tundra Service Manual > Lane Departure Alert System: Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) Whenever a lane departure alert system is stored, the forward recognition camera stores the current vehicle state (ECU and sensor information) as Freeze Frame Data. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. ( ...
