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Home >> Lexus >> 2011 >> IS 250C Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (4GR-FSE) (Diagnostic Codes & Circuit Tests) >> SFI System >> DTC P1235: High Pressure Fuel Pump Circuit >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor runs whenever following DTCs are not present None
Time after engine start 5 seconds or more
Output duty ratio More than output duty ratio change map value, and less than 95%
Battery voltage 10.5 V or more
Injector driver relay ON
Engine switch On (IG)
Starter OFF
Output duty ratio change map value -
Engine speed is 500 RPM 5 %
Engine speed is 2000 RPM 20%
Engine speed is 4000 RPM 40%
Engine speed is 6000 RPM 60%
Engine speed is 8000 RPM 80%