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Lexus
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2009
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IS F
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control (SFI) System (Diagnostic Codes & Circuit Tests)
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SFI System
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DTC U0101: Lost Communication with TCM
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Typical Enabling Conditions
Typical Enabling Conditions
Monitor runs whenever following DTCs not present
None
Battery voltage
10.5 V or more (1 second or more)
Engine switch
on (IG)
Starter
OFF