How to De-energize the High Voltage System of a Mach-E GT

Video Description

See how to de-energize the high voltage (HV) system of a 2021 Ford Mustang Mach E GT! This new Low Voltage Service Disconnect (LVSD) method is used by all 2020 and newer Ford electric vehicles and hybrid electric vehicles. TIMELINE: 0:00 Start 0:08 Introduction 0:45 High voltage connectors at the HV battery 1:10 The Ford scan tool method of de-energizing the high voltage system 3:00 Starting the Ford Diagnostic and Repair System (FDRS) software 3:19 Connecting the vehicle communication module II (VCM II) 3:50 Vehicle Diagnostic Trouble Code (DTC) Check results 4:40 Running the BECM - High Voltage System De-Energizing tool 6:12 Checking for loss of high voltage isolation DTCs 6:34 MUST SEE: The live isolation resistance value 7:20 Checking for stuck closed or stuck open contactor DTCs 7:40 The basic function of the contactors 8:00 MUST SEE: The live high voltage values at each high voltage component 9:34 MUST SEE: The function of the Low Voltage Service Disconnect (LVSD) connector. 11:08 The ON and OFF positions of the Low Voltage Service Disconnect (LVSD) connector. 12:03 The OSHA 1910.147 Lockout-Tagout hole and procedure 13:25 Waiting five minutes for the passive discharge of the inverter capacitors 14:16 MUST SEE: The live low voltage values at each high voltage component 14:38 Contactors are open, it is safe to remove high voltage connections at HV battery without Personal Protective Equipment (PPE). 15:23 The Manual high voltage de-energizing procedure 16:54 The General Motors Version of the LVSD; the High Voltage Service Lockout (HVSL). 17:45 Ford uses the LVSD on all new 2020 and above electric vehicles and hybrid electric vehicles. 18:49 the Manual Service Disconnect (MSD) levers are slowly being phased out. 19:40 Video Summary ABOUT US Weber State University (WSU) - Davis Campus - Department of Automotive Technology - Ardell Brown Technology Wing - Transmission Lab. We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: http://www.weber.edu/automotive This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kelly.html ADDITIONAL TRAINING FOR YOU Join us for hybrid and electric vehicle training with two online courses and in a 5-day on-campus boot camp with Professor John D. Kelly. See http://www.weber.edu/evtraining DONATE TO OUR DEPARTMENT Please consider a donation to the Department of Automotive Technology at Weber State University here: http://advancement.weber.edu/Automotive