Subaru 2009 IMPREZA Service Manual page 721

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
DK:DTC P2227 BAROMETRIC PRESSURE CIRCUIT RANGE/PERFORMANCE
DTC DETECTING CONDITION:
• Detected when two consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4SO)-199, DTC P2227 BAROMETRIC PRESSURE CIRCUIT
RANGE/PERFORMANCE, Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H4SO)(diag)-55,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-44, PROCEDURE,
Inspection Mode.>.
Step
1 CHECK FOR ANY OTHER DTC ON DISPLAY. Is any other DTC displayed?
DL:DTC P2228 BAROMETRIC PRESSURE CIRCUIT LOW
DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION <Ref. to GD(H4SO)-200, DTC P2228 BAROMETRIC PRESSURE CIRCUIT
LOW, Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to EN(H4SO)(diag)-55,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-44, PROCEDURE,
Inspection Mode.>.
Step
1 CHECK FOR ANY OTHER DTC ON DISPLAY. Is any other DTC displayed?
Check
Check
EN(H4SO)(diag)-304
Yes No
Check DTC using Replace the ECM.
"List of Diagnostic <Ref. to
Trouble Code FU(H4SO)-45,
(DTC)". <Ref. to Engine Control
EN(H4SO)(diag)- Module (ECM).>
86, List of Diagnos-
NOTE:
tic Trouble Code
The
(DTC).>
pressure sensor is
built into the ECM.
Yes No
Check DTC using Replace the ECM.
"List of Diagnostic <Ref. to
Trouble Code FU(H4SO)-45,
(DTC)". <Ref. to Engine Control
EN(H4SO)(diag)- Module (ECM).>
86, List of Diagnos-
NOTE:
tic Trouble Code
The
(DTC).>
pressure sensor is
built into the ECM.
barometric
barometric