Subaru 2004 LEGACY Service Manual page 144

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK HARNESS BETWEEN GENERATOR
AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from generator
and ECM.
3) Measure the resistance of harness
between generator connector and engine
ground.
Connector & terminal
(F26) No. 3 — Engine ground:
2 CHECK HARNESS BETWEEN GENERATOR
AND ECM CONNECTOR.
Measure the resistance of harness between
ECM and generator.
Connector & terminal
(B136) No. 22 — (F26) No. 3:
BV: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 resistance more than 1
MΩ?
Is the resistance less than 1
Ω?
EN(H6DO)(diag)-213
ENGINE (DIAGNOSTICS)
Yes
Go to step 2. Repair the ground
short circuit in har-
ness between
ECM and genera-
tor connector.
Repair the poor Repair the open
contact connector. circuit in harness
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