- Replacement of No. 1 HV supply stack sub-assembly
- Replacement of No. 2 HV supply stack sub-assembly
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001N36U |
| Model Year Start: 2021 | Model: Corolla | Prod Date Range: [04/2020 - 09/2022] |
| Title: HYBRID / BATTERY CONTROL: HV BATTERY STACK (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 supply stack sub-assembly removal/installation are shown below.
Necessary Procedures After Parts Removed/Installed/Replaced
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Replaced Part or Performed Procedure |
Necessary Procedure |
Effect/Inoperative Function when Necessary Procedure not Performed |
Link |
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Auxiliary battery terminal is disconnected/reconnected |
Perform steering sensor zero point calibration |
Lane Control System |
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Pre-collision System |
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HV battery status information cannot be updated |
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CAUTION:
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Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the repair manual.
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![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)
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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. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / HV Battery / Data List / Hybrid Battery Temperature 1 to 6.
Powertrain > HV Battery > Data List
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Tester Display |
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Hybrid Battery Temperature 1 |
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Hybrid Battery Temperature 2 |
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Hybrid Battery Temperature 3 |
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Hybrid Battery Temperature 4 |
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Hybrid Battery Temperature 5 |
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Hybrid Battery Temperature 6 |
(d) Read the Data List.
NOTICE:
If any of the temperatures listed in "Hybrid Battery Temperature 1 to 6" are 50°C or more, leave the vehicle until the temperature drops to less than 50°C.
2. REMOVE HV BATTERY
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3. REMOVE UPPER NO. 1 HYBRID BATTERY COVER SUB-ASSEMBLY
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4. REMOVE HV BATTERY JUNCTION BLOCK ASSEMBLY WITH NO. 2 HYBRID BATTERY SHIELD SUB-ASSEMBLY
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5. REMOVE HYBRID BATTERY TERMINAL BLOCK
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6. REMOVE NO. 1 HYBRID BATTERY INTAKE DUCT
CAUTION:
Be sure to wear insulated gloves and protective goggles.
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(a) Remove the clip to disconnect the No. 1 hybrid battery intake duct from the HV battery. |
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(b) Disengage the claw of hybrid battery thermistor (sensor portion) and remove the No. 1 hybrid battery intake duct.
7. REMOVE NO. 1 HV BATTERY HOSE
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8. REMOVE NO. 1 HYBRID BATTERY SHIELD SUB-ASSEMBLY
CAUTION:
Be sure to wear insulated gloves and protective goggles.
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(a) Disengage the clamp. |
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(b) Remove the nut and No. 1 hybrid battery shield sub-assembly from the HV battery.
9. REMOVE NO. 1 HV BATTERY PROTECTOR
CAUTION:
Be sure to wear insulated gloves and protective goggles.
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(a) Disengage the clamp to disconnect the wire harness. |
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(b) Remove the 3 nuts. |
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(c) Disengage the 2 claws and remove the No. 1 HV battery protector from the No. 2 HV battery protector.
10. REMOVE BATTERY ECU ASSEMBLY
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11. REMOVE NO. 2 HV BATTERY PROTECTOR
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12. REMOVE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY
CAUTION:
Be sure to wear insulated gloves and protective goggles.
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(a) Disconnect the connector. NOTICE: Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector. |
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(b) Disconnect the connector. |
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(c) Disengage the claw. |
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(d) Remove the 4 nuts and No. 1 HV supply stack sub-assembly. |
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13. REMOVE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY
CAUTION:
Be sure to wear insulated gloves and protective goggles.
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(a) Disengage the claw. |
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(b) Remove the 4 nuts and No. 2 HV supply stack sub-assembly. |
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14. PERFORM RECOVERY INSPECTION
(a) Before returning the HV supply stack sub-assembly, make sure to perform a recovery inspection.
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