Initial Inspection and Diagnostic Overview

General Description

CAUTION
1. SUPPLEMENTAL RESTRAINT SYSTEM "AIRBAG"
The air bag system wiring harness is routed near the ABS wheel speed sensor VDCCM and VDCH/M.

CAUTION:
^ All airbag system wiring harnesses and connectors are yellow. Do not use the electrical test equipment on these circuits.
^ Be careful not to damage the airbag system wiring harness when servicing the ABS wheel speed sensor, VDCCM and VDCH/M.

INSPECTION
Before performing diagnosis, check the following items which might affect VDC problems.

1. BATTERY
Measure the battery voltage and check electrolyte.
Standard voltage: 12 V or more
Specific gravity. 1.260 or more

2. GROUND
Check the tightening of VDC ground (GV) bolt.

3. BRAKE FLUID
1. Check the brake fluid level.
2. Check for brake fluid leaks.

4. HYDRAULIC MODULE
Check the VDCH/M.

5. BRAKE DRAG
Check for brake drag.

6. BRAKE PAD AND ROTOR
Check the brake pad and rotor.

7. TIRE
Check the tire specifications, tire wear and air pressure.