Inspection of the High Voltage Electrical Component
ep3 mm 08.01.001
- Park the vehicle on a level surface, shut down the vehicle and set the parking brake. Chock the tires.
- Inspect the condition of the electrical component. Check for signs of excess dirt and debris build up on or around components. If exterior cleaning is needed for a thorough inspection, clean exterior debris from the component using a dry method such as a vacuum cleaner or an electrical contact cleaner such as CRC QD® Electronic Cleaner.
- Check all mounting points for loose, broken, or missing parts. Components must be securely mounted. All loose, broken, or missing parts must be repaired to maintain proper component function.
- Inspect the component protective cover for proper fit and function. Inspect the cover for cracks, broken mounting, missing sealing surfaces, and warped or bulged surfaces. The cover must prevent moisture and debris from entering the components protected area. Missing, leaking, or damaged covers will result in moisture and debris entering the component and will result in component failure. When it is determined that a cover has not properly prevented moisture and debris from entering the component, the entire component must be replaced.
- Inspect the component exterior for signs of thermal distortion, warping, bulging, discoloration, amperage related heating, color variance or shading across the component which could be a sign of internal failure requiring replacement of the component. The root source causing conditions of high heat, excess amperage, and/or circuit overload component failures must be diagnosed and repaired prior to replacing the component.
- Inspect the component housing sub-assembly clips and fasteners for correct fit and location, and that the component sub-assembly housing seams are tight and secure. Missing, leaking, or damaged component housings must be replaced.
- Inspect component harnesses for secured routing that prevents
excess harness movement and prevents the harness from pulling too
tight on the connector. Inspect harnesses for signs of rubbing or
chafing that could result in wire circuit damage.
Important: Do not attempt to repair high voltage cables. If the insulation on the cable appears damaged, the harness must be replaced.
Danger: Electric vehicles are equipped with a high-voltage system. Do not attempt any type of electrical work on the vehicle unless you have completed HV3 Daimler Safety Training. Failure to do so could cause severe personal injury or death.
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