Subaru Legacy 2002 Service Manual page 2467

VDC (Diagnostics)
3. General Description
A: CAUTION
S005001A03
1. SUPPLEMENTAL RESTRAINT SYSTEM
"AIRBAG"
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Airbag system wiring harness is routed near the
ABS sensor, ABS control module and hydraulic
control unit.
CAUTION:
¼ All airbag system wiring harness and con-
nectors are colored yellow. Do not use electri-
cal test equipment on these circuit.
¼ Be careful not to damage airbag system wir-
ing harness when servicing the ABS sensor,
ABS control module and hydraulic control unit.
GENERAL DESCRIPTION
B: INSPECTION
S005001
Before performing diagnostics, check the following
items which might affect VDC problems:
1. BATTERY
Measure battery voltage and specific gravity of
electrolyte.
Standard voltage: 12 V, or more
Specific gravity: Above 1.260
2. BRAKE FLUID
1) Check brake fluid level.
2) Check brake fluid leakage.
3. HYDRAULIC UNIT
Check the hydraulic unit VDC.
¼ With brake tester <Ref. to VDC-15, CHECKING
THE HYDRAULIC UNIT VDC OPERATION WITH
BRAKE TESTER, INSPECTION, Hydraulic Control
Unit (H/U).>
¼ Without brake tester <Ref. to VDC-14, CHECK-
ING THE HYDRAULIC UNIT VDC OPERATION
BY PRESSURE GAUGE, INSPECTION, Hydraulic
Control Unit (H/U).>
4. BRAKE DRAG
Check brake drag.
5. BRAKE PAD AND ROTOR
Check brake pad and rotor.
¼ Front <Ref. to BR-21, INSPECTION, Front
Brake Pad.>, <Ref. to BR-22, INSPECTION, Front
Disc Rotor.>
¼ Rear <Ref. to BR-26, INSPECTION, Rear Brake
Pad.>, <Ref. to BR-27, Rear Disc Rotor.>
6. TIRE
Check tire specifications, tire wear and air pres-
sure. <Ref. to WT-2, SPECIFICATIONS, General
Description.>
VDC-8
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S005001A1005
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