HV RELAY ASSEMBLY REMOVAL

Info Added 2017-10-06

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during HV battery junction block assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure	Necessary Procedures	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Disconnect cable from negative auxiliary battery terminal	Memorize steering angle neutral point	Lane departure alert system (w/ Steering Control)	Click here
		Simple intelligent parking assist system*1
		Toyota parking assist-sensor system*1
		Pre-collision system
	Initialize back door lock	Power door lock control system	Click here

*1: When performing learning using the GTS.
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CAUTION:

This vehicle has contains high voltage circuits standardized with orange colored wiring and connectors, so follow the instructions in this manual to perform the procedures correctly.

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If the correct procedures are not followed according to the instructions in this manual, there is a danger of electric shock from the high voltage circuits.
Be sure to wear insulating gloves when working on high voltage wiring or components.
If work is performed without wearing insulating gloves, there is a danger of electric shock.

PROCEDURE

PRECAUTION

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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REMOVE SERVICE PLUG GRIP

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DISCONNECT ENGINE WIRE

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REMOVE CONNECTOR COVER ASSEMBLY

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CHECK TERMINAL VOLTAGE

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INSTALL CONNECTOR COVER ASSEMBLY

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CONNECT ENGINE WIRE

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REMOVE BENCH TYPE REAR SEAT CUSHION ASSEMBLY

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REMOVE REAR SEAT CUSHION LOCK HOOK

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REMOVE REAR DOOR SCUFF PLATE LH

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REMOVE REAR UNDER SIDE COVER LH

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REMOVE REAR DOOR SCUFF PLATE RH

Tech Tips

Use the same procedure as for the LH side.

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REMOVE REAR UNDER SIDE COVER RH

Tech Tips

Use the same procedure as for the LH side.

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REMOVE REAR UNDER COVER

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REMOVE REAR SEAT CUSHION LEG SUB-ASSEMBLY

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REMOVE BATTERY COOLING BLOWER ASSEMBLY

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REMOVE NO. 1 HV BATTERY COVER PANEL RH

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DISCONNECT HV FLOOR UNDER WIRE

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DISCONNECT FLOOR WIRE

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REMOVE NO. 1 HYBRID BATTERY EXHAUST DUCT

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DISCONNECT FLOOR WIRE

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REMOVE UPPER NO. 1 HYBRID BATTERY COVER SUB-ASSEMBLY

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REMOVE HV BATTERY JUNCTION BLOCK ASSEMBLY
CAUTION:

Be sure to wear insulated gloves and protective goggles.
1. Remove the bolt and disconnect the electric vehicle battery plug assembly.
2. Disconnect the HV battery junction block assembly connector.
  
  Note
  
  Insulate the disconnected connectors with insulating tape.
3. Disengage the clamp.
4. Disengage the 2 claws and open the wiring harness protector.
5. Disconnect the HV battery junction block assembly connector.
  
  Note
  
  Insulate the disconnected connectors with insulating tape.
6. *a Protective Tape
  
  Using a screwdriver with its tip wrapped with protective tape, disengage the 2 claws and remove the wiring harness protector.
7. Disconnect the HV battery junction block assembly connector.
8. Remove the 4 nuts and HV battery junction block assembly from the No. 1 hybrid battery shield sub-assembly.
  
  Note
  
  If the HV battery junction block assembly has been struck or dropped, replace it with a new one.