Proper Work Procedures
WARNING: This page is about a different car, the 2015 Subaru XV Crosstrek and 2015 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
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.