Subaru SVX 1992 Manual page 356

FUEL INJECTION SYSTEM [T1oso] 2-7
P: MODE F19, F20 - A/F correction coefficient 1, 2 (ALPHA1, ALPHA 2) -
CONDITION :
Idling after warm-up
Probable cause (Item outside "specified data")
SPECIFIED DATA :
- 1 .6 to + 1 .6
1 .I OZ sensor signal I - I Check "MODE : F13" and "MODE : F14"
OK
2 . Air flow signal
Check "MODE : F08"
OK
3 . Injector pulse width
Check "MODE : F11°
Q : MODE F21 - Knock sensor signal (RTRD) -
CONDITION: SPECIFIED DATA :
Engine warm-up - 10 to + 10 deg
Engine speed low to high
Probable cause (Item outside "specified data
1 . Knock sensor 1 and/or 2
Check knock sensor 1 and/or 2
(Refer to [T7F0], [T710])
CONDITION : SPECIFIED DATA :
Idling after warm-up
Probable cause (Item outside "specified data")
1 . Purge control solenoid valve
`
Check purge control solenoid valve
(Refer to [T700])
S: MODE F23 - Atmospheric pressure (BARO . P) -
CONDITION : SPECIFIED DATA :
Ground surface (Not high altitude) 760 mmHg*
Engine at idle
* : "-9 to + 10 mmHg" changes at an altitude of 100
meters.
Probable cause (Item outside "specified data")
1 . Atmospheric pressure sensor Replace ECU .
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