Last Modified: 05-13-2024 |
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
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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Auxiliary battery terminal is disconnected/reconnected
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Perform steering sensor zero point calibration
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Lane Control System
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Pre-collision System
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Replacement of No. 1 HV supply stack sub-assembly
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Replacement of No. 2 HV supply stack sub-assembly
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Prediagnostic battery charge
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Battery diagnosis
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Battery status info update
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HV battery status information cannot be updated
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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
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
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(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
Click here
3. REMOVE UPPER NO. 1 HYBRID BATTERY COVER SUB-ASSEMBLY
Click here
4. REMOVE HV BATTERY JUNCTION BLOCK ASSEMBLY WITH NO. 2 HYBRID BATTERY SHIELD SUB-ASSEMBLY
Click here
5. REMOVE HYBRID BATTERY TERMINAL BLOCK
Click here
6. REMOVE NO. 1 HYBRID BATTERY INTAKE DUCT
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(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
Click here
8. REMOVE NO. 1 HYBRID BATTERY SHIELD SUB-ASSEMBLY
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(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.
(a) Disengage the clamp to disconnect the wire harness.
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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
Click here
11. REMOVE NO. 2 HV BATTERY PROTECTOR
Click here
12. REMOVE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(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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(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.
(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.
Click here
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