Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM10000000277VJ |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 -
] |
Title: HYBRID / BATTERY CONTROL: HV RELAY ASSEMBLY (for LITHIUM-ION BATTERY): REMOVAL; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] |
REMOVAL
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
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Necessary Procedure
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Effect/Inoperative Function when Necessary Procedure not Performed
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Link
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HV battery junction block assembly
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Current sensor offset learning
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DTCs are stored
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High voltage fuse accumulated load history reset
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NOTICE:
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After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.
Click here
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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.
HINT:
When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
Learning completes when vehicle is driven
Effect/Inoperative Function when Necessary Procedure not Performed
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Necessary Procedure
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Link
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Front Camera System (for TMC Made)
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Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.
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PROCEDURE
1. PRECAUTION
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2. REMOVE SERVICE PLUG GRIP
Click here
3. REMOVE CONNECTOR COVER ASSEMBLY
Click here
4. CHECK TERMINAL VOLTAGE
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5. INSTALL CONNECTOR COVER ASSEMBLY
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6. DISCONNECT REAR SEAT CENTER LAP TYPE BELT ASSEMBLY
Click here
7. REMOVE REAR SEAT CUSHION ASSEMBLY
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8. REMOVE REAR SEAT CUSHION LOCK HOOK
Click here
9. REMOVE REAR DOOR SCUFF PLATE LH
Click here
10. REMOVE REAR UNDER SIDE COVER LH
Click here
11. REMOVE REAR DOOR SCUFF PLATE RH
HINT:
Use the same procedure as for the LH side.
12. REMOVE REAR UNDER SIDE COVER RH
HINT:
Use the same procedure as for the LH side.
13. REMOVE REAR UNDER COVER
Click here
14. REMOVE REAR SEAT CUSHION LEG SUB-ASSEMBLY
Click here
15. REMOVE NO. 1 HV BATTERY COVER PANEL RH
Click here
16. DISCONNECT FLOOR UNDER WIRE
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17. DISCONNECT FLOOR WIRE
(a) Disconnect the electric vehicle battery plug assembly connector.
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(b) Disconnect the 2 HV battery junction block assembly connectors.
(c) Disengage the clamp.
18. REMOVE HV BATTERY JUNCTION BLOCK ASSEMBLY
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(b) Disconnect the 2 HV battery junction block assembly connectors.
NOTICE:
Insulate the disconnected high-voltage connectors with insulating tape.
(c) Remove the 3 nuts and HV battery junction block assembly from the HV battery.
NOTICE:
If the HV battery junction block assembly has been struck or dropped, replace it with a new one.
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