Caution / Notice / Hint

WARNING:

Before the following operations are conducted, take precautions to prevent electric shock by turning the ignition switch off, wearing insulated gloves, and removing the service plug grip from HV battery.

Fig 1: Wear Insulated Gloves
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Inspecting the high-voltage system
- Disconnecting the low voltage connector of the inverter with converter assembly
- Disconnecting the low voltage connector of the HV battery
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.

Fig 2: Do Not Service The Vehicle Before Cutting Of The High-Voltage Circuit
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

Fig 3: Do Not Leave Service Plug Grip Accessible To Other Technicians
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
Refer to PRECAUTION [07/2020 - ]

HINT:

Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

Fig 4: Do Not Service Vehicle Without Waiting At Least 10 Minutes To Discharge The High-Voltage Capacitor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a Without waiting for 10 minutes
Make sure to insulate the high-voltage connectors and terminals of the HV battery with insulating tape after removing it.
If the HV battery stored without insulating the connectors and terminals, electric shock or fire may result.

When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent.

Fig 5: Dispose Of HV Battery Through An Authorized Collection Agent

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Dealer
*b	Battery Collection Agent

Accidents such as electric shock may result if the HV battery is disposed of improperly or abandoned. Therefore, make sure to return all HV batteries through an authorized collection agent.

Before returning the HV battery, make sure to perform a recovery inspection.
Refer to RECOVERY INSPECTION [07/2020 - ]
Before returning the HV supply stack sub-assembly, make sure to perform a recovery inspection.
Refer to RECOVERY INSPECTION [07/2020 - ]
Make a note of the output DTCs as some of them may be necessary for recovery inspection of the HV battery and HV supply stack sub-assemblies.
After removing the HV battery, keep it away from water. Exposure to water may cause the HV battery to produce heat, resulting in a fire.

Fig 6: Do Not Expose HV Battery To Moisture
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Refer to BEFORE DISCONNECTING BATTERY [07/2020 - 10/2022] , or refer to BEFORE DISCONNECTING BATTERY [10/2022 - ]
When disconnecting and reconnecting the auxiliary battery
Refer to WORK PROCEDURE [07/2020 - 10/2022] , or refer to WORK PROCEDURE [10/2022 - ]

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Refer to AUTOMATIC LEARNING CHART [07/2020 - ]

HINT:

P0E2D-00 may be output as a result of the malfunction indicated by the DTCs in table below.

The chart above is listed in inspection order of priority.
Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)

Malfunction Content	Relevant DTC
Microcomputer malfunction	P0A1F-94	Hybrid/EV Battery Energy Control Module Unexpected Operation
	P062F-46	Hybrid/EV Battery Energy Control Module EEPROM Calibration / Parameter Memory Failure
	P0A1D-94	Hybrid/EV Powertrain Control Module Unexpected Operation
	P060A-47	Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
	P060B-49	Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
	P0606-87	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
	P060A-87	Hybrid/EV Battery Energy Control Module Processor from Monitoring Processor Missing Message
	P0606-29	Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Signal Invalid
	U0293-87	Lost Communication with Hybrid/EV Powertrain Control Module Missing Message
	U0100-87	Lost Communication with ECM/PCM "A" Missing Message
	U1150-87	Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message
	P0560-14	System Voltage (BATT) Circuit Short to Ground or Open
	P0ABF-00	Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance