Subaru Legacy 2004 Service Manual page 4133

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure the resistance between harness
connectors.
Connector & terminal
(B280) No. 20 — No. 30:
2 CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280).
2) Measure the resistance between harness
connectors.
Connector & terminal
(B280) No. 20 — No. 30:
Check
Is the resistance 55 — 65 "?
(Standard 60 ")
Is the resistance 115 — 125
"? (End resistance or main
line is open)
LAN(diag)-57
LAN SYSTEM (DIAGNOSTICS)
Yes
Read the DTC of Go to step 2.
ECM. Perform the
diagnosis accord-
ing to DTC. <Ref.
to EN(H4SO
2.0)(diag)-25,
READ DIAGNOS-
TIC TROUBLE
CODE (DTC) FOR
ENGINE (NOR-
MAL MODE),
OPERATION,
Subaru Select
Monitor.> <Ref. to
EN(H4SO
2.5)(diag)-26,
READ DIAGNOS-
TIC TROUBLE
CODE (DTC) FOR
ENGINE (NOR-
MAL MODE),
OPERATION,
Subaru Select
Monitor.> <Ref. to
EN(H4DOTC)(diag
)-21, READ DIAG-
NOSTIC TROU-
BLE CODE (DTC)
FOR ENGINE
(NORMAL
MODE), OPERA-
TION, Subaru
Select Monitor.>
<Ref. to
EN(H6DO)(diag)-
25, READ DIAG-
NOSTIC TROU-
BLE CODE (DTC)
FOR ENGINE
(NORMAL
MODE), OPERA-
TION, Subaru
Select Monitor.>
Go to step 3. Related line of
body integrated
unit is open when
% ". Repair or
replace the open
circuit of harness.
No