Subaru LEGACY 2004 Service Manual page 779
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Also See for LEGACY 2004:
- Service manual (4537 pages) ,
- Owner's manual (525 pages) ,
- General service manual (144 pages)
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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1
CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B280) No. 20 — No. 30:
2
CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the resistance between harness
connector terminals.
Connector & terminal
(B280) No. 20 — No. 30:
3
CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the resistance between the har-
ness connector terminal and chassis ground.
Connector & terminal
(B280) No. 20 — Chassis ground:
(B280) No. 30 — Chassis ground:
4
CHECK HARNESS.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the voltage between the harness
connector terminal and chassis ground. (Igni-
tion switch ON)
Connector & terminal
(B280) No. 20 (+) — Chassis ground (
(B280) No. 30 (+) — Chassis ground (
5
CHECK END RESISTANCE.
1) Disconnect the VDC/ABSCM harness con-
nector.
2) Measure the resistance between VDC/
ABSCM connector terminals.
Connector & terminal
ABS
(B301) No. 11 — No. 26:
VDC
(B310) No. 13 — No. 29:
6
CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280) and VDC/ABSCM connector
(ABS:B301, VDC:310).
2) Measure the resistance between harness
connector terminals.
Connector & terminal
ABS
(B301) No. 11 — (B280) No. 30:
(B301) No. 26 — (B280) No. 20:
VDC
(B310) No. 13 — (B280) No. 20:
(B310) No. 29 — (B280) No. 30:
Check
Is the resistance 55 — 65 "?
Is the resistance 115 — 125
"?
Is the resistance % "?
Is the voltage more than 6 V?
!
):
!
):
Is the resistance between 115
— 125 "?
Is the resistance less than 10
"?
LAN(diag)-63
LAN SYSTEM (DIAGNOSTICS)
Yes
Read the DTC of
Go to step 2.
VDC/ABSCM, and
perform the diag-
nosis according to
DTC.
Go to step 5.
Go to step 3.
Open harness on
Go to step 4.
related line of body
integrated unit.
Repair or replace
the open circuit of
harness.
Repair or replace
Go to step 5.
the short circuit of
harness.
Go to step 6.
End resistance is
opened. Replace
the VDC/ABSCM.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
<Ref. to VDC-7,
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step 7.
Main wiring har-
ness opened.
Repair or replace
the open circuit of
harness.
No
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