CAUTION:: This system operates using fluid pressure up to 12 400 kPa (1800 psi). Some malfunctions can cause this pressure to be trapped in the system. Use caution when loosening pipe fittings on a system that does not work or personal injury can result.
CAUTION:: Do not disassemble the actuator. Always service the actuator as a unit. The actuator contains a large spring under tension. Disassembling the actuator allows the spring to expand with great force, which can result in personal injury.
CAUTION:: If the parking brake applies due to an electrical system failure, activate the parking brake by pulling out the parking brake switch before exiting the vehicle. Failure to do so can result in the parking brake releasing when the electrical system is repaired. This can allow the vehicle to move and cause personal injury.
The electric/auto park brake system is basically maintenance-free. When doing work on this system, the following precautions must be observed.
| • | Before doing welding work in the vehicle with an electric welding unit, turn the ignition switch OFF and disconnect the PCM connector. |
| • | Do not use a fast charge for starting the engine. |
| • | Disconnect the negative battery cable when fast charging. Refer
to
Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components. in General Information. |
| • | Never disconnect the battery from the vehicle electrical system with the engine running. |
| • | Make sure all wiring harness connectors are securely connected. |
| • | Always note the routing position, mounting and location of all components, wiring, connectors, clips, brackets, brake pipes, etc. when servicing the system. Proper system operation can only be achieved if the system is restored to its original equipment condition. |
The above items do not cover every possibility but must be followed when working on the electric/auto park brake system. When doing service work, become familiar with the system and how it interrelates with other components on the vehicle.
