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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 166 (Engine Control System (4GR-FSE) - Diagnostic Codes (4 Of 5)) >> SFI System >> DTC P1235: High Pressure Fuel Pump Circuit [04/2013 - 06/2014] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different car, the 2015 Lexus IS 250 and 2014 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
Monitor runs whenever the following DTCs are not stored None
All of the following conditions are met -
Time after engine start 5 seconds or more
Injector driver relay On
Output duty cycle More than output duty cycle change map value*, and less than 95%
Battery voltage 10.5 V or higher
Engine switch On (IG)
Starter Off
*: Output duty cycle 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%