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Home >> Subaru >> 2021 >> Crosstrek Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Control System (2.5L) (Diagnostics) (3 Of 4)) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P1261: Cylinder 1 Direct Fuel Injector Circuit/Open >> General Description >> Diagnostic Method

Diagnostic Method

WARNING: This page is about a different variant/trim than selected.

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

JUDGMENT VALUE SPECIFICATIONS (DIAGNOSIS 1)

Malfunction Criteria Threshold Value
Operating current 0.2 A or less
JUDGMENT VALUE SPECIFICATIONS (DIAGNOSIS 2)

Malfunction Criteria Threshold Value
Operating current 32.4 A or more
JUDGMENT VALUE SPECIFICATIONS (DIAGNOSIS 3)

Malfunction Criteria Threshold Value
Terminal voltage 1 V or less
JUDGMENT VALUE SPECIFICATIONS (DIAGNOSIS 4)

Malfunction Criteria Threshold Value
Terminal voltage 5 V or more
JUDGMENT VALUE SPECIFICATIONS (DIAGNOSIS 5)

Malfunction Criteria Threshold Value
Injector control voltage Less than 3.92 V
JUDGMENT VALUE SPECIFICATIONS (DIAGNOSIS 6)

Malfunction Criteria Threshold Value
Injector control voltage 3.92 V or more

Time needed for diagnosis: 

Diagnosis 1, 2, 5: Map1

Diagnosis 3, 4, 6: Map2

ENGINE SPEED SPECIFICATIONS - MAP 1

Engine speed (rpm) 500 2000 4000
Time when calculation was performed 10 times (sec) 2.4 0.6 0.3
ENGINE SPEED SPECIFICATIONS - MAP 2

Engine speed (rpm) 0 500 2000 4000
Time when calculation was performed 10 times (sec) 0.04 2.4 0.6 0.3

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