Subaru Legacy 2004 Service Manual page 939

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
1 CHECK OPTION CODE.
2 CHECK HARNESS BETWEEN GENERATOR
AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from generator
and ECM.
3) Measure the resistance of harness
between generator connector and engine
ground.
Connector & terminal
(F26) No. 3 — Engine ground:
3 CHECK HARNESS BETWEEN GENERATOR
AND ECM CONNECTOR.
Measure the resistance of harness between
ECM and generator of harness connector.
Connector & terminal
(B134) No. 22 — (F26) No. 3:
AU:DTC P0600 SERIAL COMMUNICATION LINK
NOTE:
For the diagnostic procedure, refer to LAN section. <Ref. to LAN(diag)-2, Basic Diagnostic Procedure.>
Check
Is the option code EC, EK or
K4?
Is the resistance more than 1
M!?
Is the resistance less than 1
!?
EN(H4SO 2.5)(diag)-180
Yes
Go to step 2. Refer to EN(H4SO
2.0) section. <Ref.
to EN(H4SO
2.0)(diag)-66, List
of Diagnostic Trou-
ble Code (DTC).>
NOTE:
Fuel injection sys-
tem for KA and KS
model is the same
as 2.0 L model.
Go to step 3. Repair the ground
short circuit in har-
ness between
ECM and purge
control solenoid
valve connector.
Repair the poor Repair the open
contact in connec- circuit in harness
tor. between ECM and
generator connec-
tor.
NOTE:
In this case, repair
the following:
• Open circuit in
harness between
ECM and genera-
tor connector
• Poor contact in
coupling connector
No