Subaru 2009 IMPREZA Service Manual page 1688

Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Pump supply pressure check
Perform the system function diagnosis with how much the pressure rises when the secondary air pump is
turned from OFF to ON.
Judge as NG if delivery pipe pressure does not rise though it should when the secondary air pump turns OFF
ON.
• Abnormality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgement Value
Malfunction Criteria
Secondary air supply pipe pressure
(after barometric pressure compensa-
tion)
Time Needed for Diagnosis: 2000 ms + 2800 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
• Normality Judgement
Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.
Judgement Value
Malfunction Criteria
Secondary air supply pipe pressure
(after barometric pressure compensa-
tion)
Time Needed for Diagnosis: 2000 ms + 2800 ms
Threshold Value
< 0.9 kPa (7 mmHg, P0410
0.3 inHg)
Threshold Value
0.9 kPa (7 mmHg, P0410
0.3 inHg)
GD(H4DOTC)-100
DTC
DTC