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Home >> Subaru >> 2024 >> Forester Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P1580: Starter Relay Diagnosis Circuit >> General Description >> Diagnostic Method

Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Starter diagnosis input Value of Map or less
BATTERY VOLTAGE SPECIFICATION - MAP

Battery voltage (V) 11 12 13 14 15 16
Starter diagnosis input (V) 8.2 8.96 9.74 10.54 11.3 12.08

Time needed for diagnosis:  2500 ms

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