Nissan Altima 2007-2008
Please note the following High Voltage System Precautions. The hybrid system contains a 244.8 V high-voltage system with a strong alkali solution of potassium hydroxide. Be sure to follow the precautions and instructions to handle the system correctly. Failure to do so may result in serious injury or electrocution.
Engineer must undergo special training to be able to perform high-voltage system inspection and servicing.High-voltage cables are colored orange. The HV battery and other high-voltage components have "high voltage" caution labels. Do not carelessly touch these wires and components.Before inspecting or servicing the high-voltage system, be sure to follow safety measures, such as wearing insulated gloves and removing the service plug to prevent electrocution. Carry the removed service plug in your pocket to prevent other technicians from reinstalling it while you are servicing the vehicle.
Before removing the service plug, confirm ignition switch off.Do not put the vehicle into the ON (READY) state after removing the service plug grip as the ECU may be damaged.ON (READY): The condition which the ready indicator lamp illuminates and vehicle is ready to be driven.Turn the ignition switch off, wear insulated gloves, and disconnect the negative terminal of the auxiliary battery before touching any of the orange-colored wires of the high-voltage system.Turn the ignition switch off before performing any resistance checks.Turn the ignition switch off before disconnecting or reconnecting any connectors.After removing the service plug, wait 10 minutes before touching any of the high-voltage connectors and terminals.
10 minutes are required to discharge the high-voltage condenser inside the inverter.
Before wearing insulated gloves, make sure that they are not cracked, ruptured, torn, or damaged in any way. Do not wear wet insulated gloves.When servicing the vehicle, do not carry metal objects like mechanical pencils or scales that can be dropped accidentally and cause a short circuit.Before touching a bare high-voltage terminal, wear insulated gloves and use a tester to make sure that the terminal voltage is 0 V.After disconnecting or exposing a high-voltage connector or terminal, insulate it immediately using insulation tape.
The screw of a high-voltage terminal should be tightened firmly to the specified torque. Both insufficient and excessive torque can cause failure.Use the "CAUTION: high-voltage. DO NOT TOUCH DURING OPERATION" sign to notify other engineers that a high-voltage system is being inspected and/or repaired.
After servicing the high-voltage system and before reinstalling the service plug, check again that you have not left a part or tool inside, that the high-voltage terminal screws are firmly tightened, and that the connectors are correctly connected.Do not place the battery upside down while removing and installing it.
When engaged in operations such as removal and installation related to high-voltage equipment, use personal protective equipment to avoid death or serious personal injury from electric shock