2014 Nissan Pathfinder First Responder's Guide - Page 15

2-5 High Voltage Safety System The high voltage safety system is intended to help keep vehicle occupants and emergency responders safe from high voltage electricity. • A high voltage fuse provides short circuit protection inside the high voltage battery. • The high voltage safety system is insulated from the metal chassis. • Positive and negative high voltage power cables are connected to the high voltage battery and are controlled by normally open system main relays (SMR1 and SMR2). When the vehicle is shut off, the relays stop electrical flow from leaving the high voltage battery. However, it can take approximately ten (10) minutes for the high voltage capacitor to fully discharge. Engine Compartment DC/DC Converter Cargo Area Junction Box System main relay 1 Li-ion Battery Transmission Traction Motor Traction Motor Inverter (With built in high voltage capacitor) Service Plug (With Fuse) System main relay 2 HPCM (Hybrid Powertrain Control Module) AAYIA0070GB • The high voltage system and high voltage capacitor may remain powered for up to approximately 10 minutes after the vehicle is shut off. Personal Protective Equipment (PPE) must always be worn when touching or working on high voltage components to avoid risk of electrical shock and severe personal injury or death. • The high voltage battery retains high voltage at all times. PPE must always be worn when touching or working on high voltage components to avoid risk of electrical shock and severe personal injury or death. • A ground fault monitor continuously monitors for high voltage leakage to the metal chassis while the vehicle is running. If a malfunction is detected, the HPCM (hybrid powertrain control module) will illuminate the hybrid system warning lamp in the instrument cluster. FRG-15