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Home >> Subaru >> 2020 >> Forester Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (General) >> Diagnostics with Phenomenon >> Check Power Supply And Ground Line Of Engine Control Module (ECM) >> Diagnostic Method
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Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE - DIAGNOSIS 1

Malfunction Criteria Threshold Value
Monitoring A/D voltage More than 0.02 V
JUDGMENT VALUE - DIAGNOSIS 2

Malfunction Criteria Threshold Value
Monitoring A/D voltage Less than 4.98 V
JUDGMENT VALUE - DIAGNOSIS 3

Malfunction Criteria Threshold Value
Monitoring A/D voltage Less than 1.1 V or
More than 1.4 V
JUDGMENT VALUE - DIAGNOSIS 4

Malfunction Criteria Threshold Value
Inner power supply voltage/2 Less than 1.819 V or More than 3 V

Time needed for diagnosis:  200ms

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

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