| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001N36J |
| Model Year Start: 2021 | Model: Corolla | Prod Date Range: [04/2020 - 09/2022] |
| Title: HYBRID / BATTERY CONTROL: HV RELAY ASSEMBLY (for LITHIUM-ION BATTERY): INSTALLATION; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022] | ||
INSTALLATION
PROCEDURE
1. INSTALL HV BATTERY JUNCTION BLOCK ASSEMBLY
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Install the HV battery junction block assembly to the HV battery with the 4 nuts.
Torque:
7.5 N·m {76 kgf·cm, 66 in·lbf}
NOTICE:
If the HV battery junction block assembly has been struck or dropped, replace it with a new one.
(b) Engage the 2 claws to install the wiring harness protector.
(c) Connect the 2 HV battery junction block assembly connectors.
NOTICE:
Make sure that the connectors are connected securely.
(d) Install the electric vehicle battery plug assembly to the HV battery with the bolt.
Torque:
7.5 N·m {76 kgf·cm, 66 in·lbf}
(e) Connect the hybrid battery terminal block connector.
NOTICE:
Make sure that the connector is connected securely.
(f) Connect the HV battery junction block assembly connector.
NOTICE:
Make sure that the connector is connected securely.
(g) Engage the 2 claws to close the wiring harness protector.
2. INSTALL UPPER NO. 1 HYBRID BATTERY COVER SUB-ASSEMBLY
Click here
![2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: BATTERY ECU (for LITHIUM-ION BATTERY): INSTALLATION+](/t3Portal/stylegraphics/info.gif)
3. INSTALL NO. 4 HV BATTERY PROTECTOR
Click here
4. CONNECT FLOOR WIRE
Click here
5. CONNECT HV FLOOR UNDER WIRE
Click here
6. INSTALL NO. 1 HV BATTERY COVER PANEL RH
Click here
7. INSTALL REAR SEAT CUSHION LEG SUB-ASSEMBLY
Click here
8. INSTALL REAR UNDER COVER
Click here
9. INSTALL REAR UNDER SIDE COVER LH
Click here
10. INSTALL REAR DOOR SCUFF PLATE LH
Click here
11. INSTALL REAR UNDER SIDE COVER RH
HINT:
Use the same procedure as for the LH side.
12. INSTALL REAR DOOR SCUFF PLATE RH
HINT:
Use the same procedure as for the LH side.
13. INSTALL REAR SEAT CUSHION LOCK HOOK
Click here
14. INSTALL REAR SEAT CUSHION ASSEMBLY
Click here
15. CONNECT REAR SEAT CENTER LAP TYPE BELT ASSEMBLY
Click here
16. INSTALL SERVICE PLUG GRIP
Click here
17. PERFORM CURRENT SENSOR OFFSET LEARNING
HINT:
Perform this procedure when the HV battery junction block assembly or battery ECU assembly has been replaced.
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (READY).
(c) Perform a road test.
NOTICE:
Accelerate and decelerate gently. Avoid rapid acceleration and deceleration.
(1) Enter the following menus: Powertrain / HV Battery / Data List / Hybrid Battery Current.
Powertrain > HV Battery > Data List
|
Tester Display |
|---|
|
Hybrid Battery Current |
(2) Drive the vehicle with the value of Data List item "Hybrid Battery Current" between -50 A and 50 A.
HINT:
Distance and driving time are not specified.
(3) Turn the power switch off and leave the vehicle for 30 seconds or more.
(4) Turn the power switch on (IG).
(5) Enter the following menus: Powertrain / HV Battery / Data List / Hybrid Battery Current.
Powertrain > HV Battery > Data List
|
Tester Display |
|---|
|
Hybrid Battery Current |
(6) Check that the value of "Hybrid Battery Current" is between -0.5 A and 0.5 A with the power switch on (IG).
NOTICE:
If the value is outside the specified range, perform the road test again.
HINT:
- When the power switch is on (IG), if value of "Hybrid Battery Current" is between -0.5 A and 0.5 A, current sensor offset learning has been completed.
- Even if the current sensor offset learning is not complete, the current sensor value will be corrected by repeating the road test a maximum of 7 times.
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