Proper Work Procedures
In addition to PPE, other precautions must be observed when working on the HEV system since parts with high voltage and strong magnetic force are used.
- Do not carry any metallic products, such as mechanical pencils and rulers, etc., which may be dropped and cause a short circuit.
- Do not wear any metallic objects such as belts or buckles, chains, etc.
- The strong magnetic force can damage or erase magnetic recording media (such as cash cards and prepaid cards), etc.
- Always confirm that the voltage at any high voltage terminal is at 0 V using an Insulation multimeter before beginning work.
- To work on the high voltage wire connections, always use insulated tools. If insulated tools are not available, wrap tools with electrical tape for insulation before use.
- When using tools wrapped with electrical tape as alternatives to insulated tools, confirm the insulated condition before working, using a Insulation multimeter.
- Make sure to maintain the proper polarity of the positive and negative terminal connections during the high voltage battery removal and installation procedures.
- Never connect the high voltage battery in reverse polarity. Otherwise, the control module will be broken instantly, and other parts will also be damaged.
- Do not disconnect the battery terminals while the engine is running. A large counter electromotive force will be generated, and this voltage may damage electronic parts such as control modules.
- When disconnecting the connectors of the electrical components, always be sure to turn the ignition switch to OFF. Perform the Clear Memory Mode after connecting the connectors.
- When measuring the voltage or resistance of individual sensors or all control modules, use a tapered pin with a diameter of less than 0.6 mm (0.024 in). Do not insert the pin 4 mm (0.16 in) or more into the part.
- Take care not to allow water to get into the connectors when servicing or washing the vehicle in rainy weather. Avoid exposure to water even if the connectors are waterproof.
- Use the engine ground terminal or engine assembly for the grounding point when measuring the voltage and resistance in engine compartment.
- Use the body ground bolt on the inverter frame as the grounding point, when measuring voltage and resistance in rear of the vehicle.
- All parts related to the hybrid system are precision parts. Do not drop or otherwise apply impact. Do not reuse the parts that are dropped accidentally.
- Each warning light may illuminate during or after the diagnosis. However, this does not indicate a system malfunction. After the hybrid system diagnosis, perform Clear Memory Mode.
- Take the ignition key or access key out of the vehicle, except when the key is needed inside.
- When the part is replaced or the label is detached, make sure to attach a new label in the original position and direction. Many of the HEV components are labeled with caution warnings.
- This engine starts and stops automatically, when the Hybrid READY indicator light in the meter illuminates. Make sure to turn the ignition to OFF before performing maintenance.