General Service Precautions

CAUTION: Replace all components included in repair kits used to service this system. Lubricate rubber parts with clean, fresh brake fluid to ease assembly. Do not use shop air with in-line lubricators on brake parts, as damage to rubber components may result. If any hydraulic component is removed or brake line disconnected, it may be necessary to bleed part or all of the brake system.

NOTE: The use of rubber hoses or parts other than those furnished specifically for the Antilock Brake System may lead to functional problems requiring major overhaul.

GENERAL SERVICE PRECAUTIONS
The following are general precautions which should be observed when servicing and diagnosing the Antilock Brake System and/or other vehicle systems. Failure to observe these precautions may result in Antilock Brake System damage.

- If welding work is to be performed on the vehicle using an electric arc welder, the EBCM and valve block connectors should be disconnected before the welding operation begins.

- The EBCM and valve block connectors should never be connected or disconnected with the ignition "ON".

- Hydraulic units of the Antilock Brake System are not separately serviceable and must be replaced as assemblies. Do not disassemble any component which is designated as nonserviceable in this Section.

- If only rear wheels are rotated using jacks or drum tester, the system will diagnose a speed sensor malfunction and the "ANTILOCK" warning light will illuminate. But actually no trouble exists. After inspection stop the engine once and re-start it, then make sure that the "ANTILOCK" warning light does not illuminate.


If the battery has been discharged
The engine may stall if the battery has been completely discharged and the engine is started via a jumper cable. This is because the Anti lock Brake System (ABS) requires a large quantity of electricity. In this case, wait until the battery is recharged, or set the ABS to a non-operative state by removing the fuse for the ABS (40A). After the battery has been recharged, stop the engine and install the ABS fuse. Start the engine again, and confirm that the ABS warning light does not light.