SYSTEM DIAGRAM 
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Toyota Tundra Service Manual > Sfi System: Cold Start Ignition Timing Performance (P050B)
DESCRIPTION This monitor will run when the engine is started at an engine coolant temperature of -10 to 50°C (14 to 122°F). The DTC will be set after the engine idles for 13 seconds (2 trip detection logic). The DTC is designed to monitor the ignition timing at cold start. When the engine is start ...
