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Home >> Subaru >> 2023 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostics) (3 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P1236: Fuel Injector Driver Serial Peripheral Interface (SPI) Communication >> General Description >> Diagnostic Method
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Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Communication data between CPU and the injector driving IC Different from expected value

Time needed for diagnosis:  65 times

MAP SPECIFICATION

Engine speed (rpm) Time needed for 65 times of diagnosis (sec)
500 3.9
2000 0.975
4000 0.4875
6000 0.325

Malfunction indicator light illumination:  Illuminates as soon as a malfunction occurs.