Subaru Legacy 2004 Service Manual page 3105

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
&?
Is there poor contact?
Is the resistance less than 0.5
&?
Is DTC displayed?
Is there any fault in LAN sys-
tem?
Is combination meter OK?
VDC(diag)-32
Check Yes
Perform the diag-
nosis according to
DTC.
Go to step 3.
Repair the con-
nector.
Check the combi-
nation meter.
Check Yes
Perform the diag-
nosis according to
DTC.
Perform the diag-
nosis according to
DTC for LAN sys-
tem.
Replace the
VDCCM&H/U.
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.
No
Go to step 2.
Go to step 3.
Repair the combi-
nation meter.