Subaru LEGACY 2004 Service Manual page 354

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
1 READ DTC.
Read the DTC. <Ref. to VDC(diag)-22, Read
Diagnostic Trouble Code (DTC).>
2 CHECK WIRING HARNESS.
1) Turn the ignition switch to OFF.
2) Disconnect the connector (B310) from
VDCCM&H/U.
3) Disconnect the connector (i10) from combi-
nation meter.
4) Measure the resistance between
VDCCM&H/U connector and combination
meter connector.
Connector & terminal
(B310) No. 35 — (i10) No. A5:
3 CHECK POOR CONTACT IN CONNECTOR.
Check poor contact in all connectors.
4 CHECK VDCCM.
1) Connect the connector to VDCCM&H/U
(B310).
2) Turn the ignition switch to ON.
3) Measure the resistance between combina-
tion meter connector and chassis ground.
Connector & terminal
(i10) No. A5 — Chassis ground:
E: VDC INDICATOR LIGHT DOES NOT GO OFF
DETECTING CONDITION:
• Defective combination meter
• Defective CAN communication
TROUBLE SYMPTOM:
When starting the engine, VDC indicator light is kept ON.
Step
1 READ DTC.
Read the DTC. <Ref. to VDC(diag)-22, Read
Diagnostic Trouble Code (DTC).>
2 CHECK LAN SYSTEM.
Perform the diagnosis for LAN system. <Ref. to
LAN(diag)-24, OPERATION, Read Diagnostic
Trouble Code (DTC).>
3 CHECK COMBINATION METER.
Check the combination meter.
Warning Light Illumination Pattern
Is DTC displayed?
Is the resistance less than 0.5
Ω?
Is there poor contact?
Is the resistance less than 0.5
Ω?
Is DTC displayed?
Is there any fault in LAN sys-
tem?
Is combination meter OK?
VDC(diag)-32
Check
Perform the diag-
nosis according to
DTC.
Go to step 3.
Repair the con-
nector.
Check the combi-
nation meter.
Check
Perform the diag-
nosis according to
DTC.
Perform the diag-
nosis according to
DTC for LAN sys-
tem.
Replace the
VDCCM&H/U.
Yes No
Go to step 2.
Repair the har-
ness connector
between
VDCCM&H/U and
combination
meter.
Go to step 4.
Replace the
VDCCM&H/U.
Yes No
Go to step 2.
Go to step 3.
Repair the combi-
nation meter.