Initial Inspection and Diagnostic Overview

INITIAL INSPECTION

1. Supplemental Restraint System - "Airbag"

Airbag system wiring harness is routed near the ABS control module, ABS sensor and hydraulic control unit.

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



2. Pre-inspection

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

MECHANICAL INSPECTION

1. POWER SUPPLY

1) Measure battery voltage and specific gravity of electrolyte.

Standard voltage: 12 V, or more Specific gravity: Above 1.260

2) Check the condition of the main and other fuses, and harnesses and connectors. Also check for proper grounding.


2. BRAKE FLUID

1) Check brake fluid level.
2) Check brake fluid leakage.


3. BRAKE DRAG
Check brake drag.


4. BRAKE PAD AND ROTOR
Check brake pad and rotor.

5. TIRE SPECIFICATIONS, TIRE WEAR AND AIR PRESSURE
Check tire specifications, tire wear and air pressure.