Subaru Legacy 2005 Service Manual page 4192

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step
5 CHECK HARNESS.
1) Disconnect the ECM connector.
2) Measure the resistance between ECM con-
nector and chassis ground.
Connector & terminal
2.0 L SOHC RHD model, 2.5 L (KA) RHD
model, 2.0 L LHD model and 2.5 L (KS)
LHD model
(B136) No. 13 — Chassis ground:
(B136) No. 14 — Chassis ground:
Except for 2.0 L SOHC RHD and 2.5 L (KA)
RHD model, 2.5 L (EC, K4) LHD model, 3.0
L LHD model
(B137) No. 18 — Chassis ground:
(B137) No. 26 — Chassis ground:
6 CHECK HARNESS.
1) Disconnect the body integrated module
(B280), ECM (B136, B137), TCM (B54), ABS
(B301)/VDC (B310) CM connectors.
2) Measure the input voltage between body
integrated module connector and chassis
ground while turning the ignition switch to ON.
Connector & terminal
(B280) No. 20 (+) — Chassis ground (
(B280) No. 30 (+) — Chassis ground (
Check
Is the resistance less than 10
Ω?
Is the voltage more than 6 V?
−
):
−
):
LAN(diag)-62
Yes
Repair or replace Go to step 6.
the short circuit of
harness.
Repair or replace Read the DTC of
the short circuit of ECM. Perform the
the harness. 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)-25,
READ DIAGNOS-
TIC TROUBLE
CODE (DTC) FOR
ENGINE (NOR-
MAL MODE),
OPERATION,
Subaru Select
Monitor.> <Ref. to
EN(H4DOTC)(diag
)-24, READ DIAG-
NOSTIC TROU-
BLE CODE (DTC)
FOR ENGINE
(NORMAL
MODE), OPERA-
TION, Subaru
Select Monitor.>
<Ref. to
EN(H6DO)(diag)-
26, READ DIAG-
NOSTIC TROU-
BLE CODE (DTC)
FOR ENGINE
(NORMAL
MODE), OPERA-
TION, Subaru
Select Monitor.>
No