| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM10000000277W0 |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [09/2022 - ] |
| Title: HYBRID / BATTERY CONTROL: HV RELAY ASSEMBLY (for LITHIUM-ION BATTERY): INSTALLATION; 2023 - 2025 MY Corolla Corolla HV [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 3 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) Connect the 2 HV battery junction block assembly connectors.
NOTICE:
Make sure that the connectors are connected securely.
(c) Install the bolt.
Torque:
7.5 N·m {76 kgf·cm, 66 in·lbf}
2. CONNECT FLOOR WIRE
(a) Engage the clamp.
(b) Connect the 2 HV battery junction block assembly connectors.
(c) Connect the electric vehicle battery plug assembly connector.
3. CONNECT FLOOR UNDER WIRE
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![2023 - 2025 MY Corolla Corolla HV [09/2022 - ]; HYBRID / BATTERY CONTROL: HV BATTERY (for LITHIUM-ION BATTERY): INSTALLATION+](/t3Portal/stylegraphics/info.gif)
4. INSTALL NO. 1 HV BATTERY COVER PANEL RH
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5. INSTALL REAR SEAT CUSHION LEG SUB-ASSEMBLY
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6. INSTALL REAR UNDER COVER
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7. INSTALL REAR UNDER SIDE COVER LH
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8. INSTALL REAR DOOR SCUFF PLATE LH
Click here
9. INSTALL REAR UNDER SIDE COVER RH
HINT:
Use the same procedure as for the LH side.
10. INSTALL REAR DOOR SCUFF PLATE RH
HINT:
Use the same procedure as for the LH side.
11. INSTALL REAR SEAT CUSHION LOCK HOOK
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12. INSTALL REAR SEAT CUSHION ASSEMBLY
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13. CONNECT REAR SEAT CENTER LAP TYPE BELT ASSEMBLY
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14. INSTALL SERVICE PLUG GRIP
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15. 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/EV 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/EV 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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