LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2007 >> B9 Tribeca Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0447 Evaporative Emission Control System Vent Control Circuit Open >> Diagnostic Method >> Abnormality Judgment
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Abnormality Judgment

Judge as NG when the continuous time of meeting the malfunction criteria below becomes more than 2.5 seconds.

Judgment Value 

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE

Malfunction Criteria Threshold Value
Ignition switch ON
Battery voltage ≥ 10.9 V
After engine starting 1 second or more
Terminal output voltage when ECM outputs OFF signal Low

Time Needed for Diagnosis:  2.5 seconds

Malfunction Indicator Light Illumination:  Illuminates as soon as a malfunction occurs.