- If the vehicle is equipped with air bag or Supplemental Restraint Systems
(SRS), always properly disable the system before working on or around system
components.
- Always use a digital, high-impedance volt-ohmmeter (DVOM) for testing unless
specified otherwise. Minimum impedance should be 10 kilo-ohms per volt.
- Certain components within the ABS system are not intended to be serviced
or repaired individually. Only those components with removal and installation
procedures should be serviced.
- Do not use rubber hoses or other parts not specifically specified for the
ABS system. When using repair kits, replace all parts included in the kit.
Partial or incorrect repair may lead to functional problems and require the
replacement of components.
- Lubricate rubber parts with clean, fresh brake fluid to ease assembly. Do
not use lubricated shop air to clean parts; damage to rubber components may
result.
- Use only DOT 3 or 4 brake fluid from a sealed container.
- If any hydraulic component or line is removed or replaced, it may be necessary
to bleed the entire system.
- A clean repair area is essential. Always clean the reservoir and cap thoroughly
before removing the cap. The slightest amount of dirt in the fluid may plug
an orifice and impair the system function. Perform repairs after components
have been thoroughly cleaned. Do not allow ABS components to come into contact
with any substance containing mineral oil; this includes used shop rags.
- The anti-lock brake control unit is a microprocessor similar to other computer
units in the vehicle. Insure that the ignition switch is OFF and
the negative battery cable disconnected before removing or installing controller
harnesses. Avoid static electricity discharge at or near the controller.
- If any arc welding is to be done on the vehicle, the ABS electronic controller
should be disconnected before welding operations begin.
- If the vehicle is to be baked after paint repairs, disconnect and remove
the ECU from the vehicle.
- Never disconnect any electrical connection with the ignition switch ON unless
instructed to do so in a test.
- Avoid touching module connector pins.
- Leave new components and modules in the shipping package until ready to
install them.
- Always touch a vehicle ground after sliding across a vehicle seat or walking
across vinyl or carpeted floors to avoid static charge damage.
- Never allow welding cables to lie on, near or across any vehicle electrical
wiring.