Subaru 2006 Legacy, Manual

Page: 4183 / 4302

VDC(diag)-33
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
F: VDC WARNING LIGHT AND VDC OFF INDICATOR LIGHT DO NOT GO OFF
DETECTING CONDITION:
• Defective combination meter
• Defective CAN communication
• Defective engine
• VDC OFF switch is shorted.
TROUBLE SYMPTOM:
When starting the engine, VDC OFF indicator light is kept ON.
NOTE:
When pressing the VDC OFF switch for more than 10 seconds, the VDC OFF indicator light goes off and can-
not operate any more. When turning the ignition switch from OFF to ON, the OFF operation enabled status
is restored.
Step Check Yes No
1 READ DTC.
Read the DTC. <Ref. to VDC(diag)-24, Read
Diagnostic Trouble Code (DTC).>
Is DTC displayed? Perform the diag-
nosis according to
DTC. Go to step 2 .
2 CHECK ENGINE. Does the malfunction indicator
light illuminate? Repair the engine. Go to step 3 .
3 CHECK ENGINE COOLANT TEMPERA-
TURE.
Warm up the engine and check if VDC warning
light and VDC OFF indicator light illumination
condition changes.
When the engine coolant tem-
perature is too low, VDC warn-
ing light and VDC OFF
indicator light illuminate. Do
the lights go off when the
engine is warmed-up? Normal operation Go to step
4
.
4 CHECK VDC OFF SWITCH.
Remove and check VDC OFF switch.
Is the VDC OFF switch nor-
mal? Go to step 5 . Replace the VDC
OFF switch.
5 CHECK LAN SYSTEM.
Perform the diagnosis for LAN system. <Ref. to
LAN(diag)-25, OPERATION, Read Diagnostic
Trouble Code (DTC).>
Is there any fault in LAN sys-
tem? Perform the diag-
nosis according to
DTC for LAN sys-
tem. Go to step
6
.
6 CHECK COMBINATION METER.
Check the combination meter.
Is combination meter OK? Replace the
VDCCM&H/U. Repair the combi-
nation meter.
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