Initial Inspection and Diagnostic Overview

General Description

CAUTION
1. SUPPLEMENTAL RESTRAINT SYSTEM "AIRBAG"
Airbag system wiring harness is routed near the ABS sensor, ABS control module and hydraulic control unit.

CAUTION:
^ All airbag system wiring harness and connectors are colored yellow. Do not use electrical test equipment on these circuit.
^ Be careful not to damage airbag system wiring harness when servicing the ABS sensor, ABS control module and hydraulic control unit.

INSPECTION
Before performing diagnostics, check the following items which might affect ABS problems:

BATTERY
Measure battery voltage and specific gravity of electrolyte.
Standard voltage: 12 V, or more
Specific gravity: Above 1.260

BRAKE FLUID
1. Check brake fluid level.
2. Check brake fluid leakage.

HYDRAULIC UNIT
Check the hydraulic unit.
^ With brake tester
^ Without brake tester

BRAKE DRAG
Check brake drag.

BRAKE PAD AND ROTOR
Check brake pad and rotor.

TIRE
Check tire specifications, tire wear and air pressure.

PREPARATION TOOL





SPECIAL TOOLS





GENERAL PURPOSE TOOLS