| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001N36I |
| Model Year Start: 2021 | Model: Corolla | Prod Date Range: [04/2020 - 09/2022] |
| Title: HYBRID / BATTERY CONTROL: HV RELAY ASSEMBLY (for LITHIUM-ION BATTERY): REMOVAL; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 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 |
Necessary Procedure |
Effect/Inoperative Function when Necessary Procedure not Performed |
Link |
|---|---|---|---|
|
Auxiliary battery terminal is disconnected/reconnected |
Perform steering sensor zero point calibration |
Lane Control System |
|
|
Pre-collision System |
|||
|
Replacement of HV battery junction block assembly |
Current sensor offset learning |
DTCs are stored |
|
CAUTION:
-
Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the repair manual.
Click here
![2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): PRECAUTION](/t3Portal/stylegraphics/info.gif)
-
To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.
NOTICE:
After the power switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for HV Model))
PROCEDURE
1. PRECAUTION
Click here
2. REMOVE SERVICE PLUG GRIP
Click here
3. DISCONNECT ENGINE WIRE
Click here
4. REMOVE CONNECTOR COVER ASSEMBLY
Click here
5. CHECK TERMINAL VOLTAGE
Click here
6. INSTALL CONNECTOR COVER ASSEMBLY
Click here
7. CONNECT ENGINE WIRE
Click here
8. DISCONNECT REAR SEAT CENTER LAP TYPE BELT ASSEMBLY
Click here
9. REMOVE REAR SEAT CUSHION ASSEMBLY
Click here
10. REMOVE REAR SEAT CUSHION LOCK HOOK
Click here
11. REMOVE REAR DOOR SCUFF PLATE LH
Click here
12. REMOVE REAR UNDER SIDE COVER LH
Click here
13. REMOVE REAR DOOR SCUFF PLATE RH
HINT:
Use the same procedure as for the LH side.
14. REMOVE REAR UNDER SIDE COVER RH
HINT:
Use the same procedure as for the LH side.
15. REMOVE REAR UNDER COVER
Click here
16. REMOVE REAR SEAT CUSHION LEG SUB-ASSEMBLY
Click here
17. REMOVE NO. 1 HV BATTERY COVER PANEL RH
Click here
18. DISCONNECT HV FLOOR UNDER WIRE
Click here
19. DISCONNECT FLOOR WIRE
Click here
20. REMOVE NO. 4 HV BATTERY PROTECTOR
Click here
21. REMOVE UPPER NO. 1 HYBRID BATTERY COVER SUB-ASSEMBLY
Click here
22. REMOVE HV BATTERY JUNCTION BLOCK ASSEMBLY
CAUTION:
Be sure to wear insulated gloves and protective goggles.
|
(a) Disengage the 2 claws and open the wiring harness protector. |
|
|
(b) Disconnect the HV battery junction block assembly connector. NOTICE: Insulate the disconnected high-voltage connector with insulating tape. |
|
(c) Disconnect the hybrid battery terminal block connector.
NOTICE:
Insulate the disconnected high-voltage connector with insulating tape.
|
(d) Remove the bolt and electric vehicle battery plug assembly from the HV battery. |
|
|
(e) Disconnect the 2 HV battery junction block assembly connectors. NOTICE: Insulate the disconnected high-voltage connectors with insulating tape. |
|
|
(f) Using a screwdriver with its tip wrapped with protective tape, disengage the 2 claws and remove the wiring harness protector. |
|
|
(g) Remove the 4 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. |
|
|
|