Subaru 2009 IMPREZA Service Manual page 1584

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
13 CHECK HARNESS BETWEEN ECM AND
SECONDARY AIR COMBINATION VALVE
RELAY 2 CONNECTOR.
Measure the resistance between the secondary
air combination valve relay 2 connector and
chassis ground.
Connector & terminal
(F9) No. 9 — Chassis ground:
EG:DTC P2443 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE
STUCK CLOSED (BANK2)
NOTE:
For the diagnostic procedure, refer to DTC P2442. <Ref. to EN(H4DOTC)(diag)-359, DTC P2442 SECOND-
ARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK OPEN (BANK2), Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
Check
Is the resistance 1 M or
more?
EN(H4DOTC)(diag)-363
ENGINE (DIAGNOSTICS)
Yes No
Repair the poor Repair the short
contact of ECM circuit to ground in
connector. harness between
ECM and second-
ary air combination
valve relay 2 con-
nector.