Subaru 2009 IMPREZA Service Manual page 1579

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
13 CHECK HARNESS BETWEEN ECM AND
SECONDARY AIR COMBINATION VALVE
RELAY 1 CONNECTOR.
Measure the resistance between the secondary
air combination valve relay 1 connector and
chassis ground.
Connector & terminal
(F9) No. 2 — Chassis ground:
EE:DTC P2441 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE
STUCK CLOSED (BANK1)
NOTE:
For the diagnostic procedure, refer to DTC P2440. <Ref. to EN(H4DOTC)(diag)-354, DTC P2440 SECOND-
ARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK OPEN (BANK1), Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
Check
Is the resistance 1 M or
more?
EN(H4DOTC)(diag)-358
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 1 con-
nector.