Caution / Notice / Hint
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
COMPONENTS (REMOVAL)
| Callout - Procedure | Part Name Code | ||||
|---|---|---|---|---|---|
| 1 | PRECAUTION | - | See step 1 | - | - |
| 2 | WHEN REPLACING BATTERY ECU ASSEMBLY | - | See step 2 | - | - |
| 3 | SERVICE PLUG GRIP | G3834 | - | - | - |
| 4 | REMOVE CONNECTOR COVER ASSEMBLY | - | See step 4 | - | - |
| 5 | TERMINAL VOLTAGE | - | See step 5 | - | - |
| 6 | INSTALL CONNECTOR COVER ASSEMBLY | - | See step 6 | - | - |
| Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping" : N.m (kgf/cm, ft.lbf) | N.m (kgf/cm, ft.lbf): Specified torque |
| Procedure | Part Name Code | ||||
|---|---|---|---|---|---|
| 7 | REAR CENTER SEAT OUTER BELT ASSEMBLY | 73350C | - | - | - |
| 8 | BENCH TYPE REAR SEAT CUSHION ASSEMBLY | - | See step 8 | - | - |
| 9 | REAR SEAT CUSHION LOCK HOOK | 72693 | - | - | - |
| 10 | REAR DOOR SCUFF PLATE RH | 67917A | - | - | - |
| 11 | REAR UNDER SIDE COVER RH | 76973F | - | - | - |
| 12 | REAR DOOR SCUFF PLATE LH | 67918A | - | - | - |
| 13 | REAR UNDER SIDE COVER LH | 76974F | - | - | - |
| 14 | REAR UNDER COVER | 76971G | - | - | - |
| 15 | REAR SEAT CUSHION LEG SUB-ASSEMBLY | 71033 | - | - | - |
| • | Non-reusable part | - | - |
| Procedure | Part Name Code | ||||
|---|---|---|---|---|---|
| 16 | NO. 1 HYBRID BATTERY SHIELD SUB-ASSEMBLY | G920Q | See step 16 | - | - |
| 17 | UPPER HV BATTERY COVER SUB-ASSEMBLY | - | See step 17 | - | - |
| 18 | BATTERY ECU ASSEMBLY | 89890A | See step 18 | - | - |
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during battery ECU assembly removal/installation are shown below.
NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED
| Replaced Part or Performed Procedure | Necessary Procedures | Effect/Inoperative Function when Necessary Procedure not Performed | Link |
|---|---|---|---|
| Replacement of battery ECU assembly | Current sensor offset learning | DTCs are stored | See step 15 |
WARNING:
- Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the appropriate service information
.
Refer to PRECAUTION [11/2022 - 12/2024] , or refer to PRECAUTION [12/2024 - ]
- To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.
NOTE:
- The type of battery ECU assembly to be used varies depending on the vehicle model.
- The type of battery ECU assembly to be used varies depending on the vehicle model.
- If the wrong type of battery ECU assembly is installed, the ignition switch cannot be turned on (READY).
- After installing the battery ECU assembly, perform the following to check that the ignition switch can be turned on (READY).
- Turn the ignition switch to ON (READY).
- Turn the ignition switch off and wait for 30 seconds or more.
- Turn the ignition switch on (READY) again.
HINT:
When the cable is disconnected/reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
- Learning completes when vehicle is driven.
Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link Front Camera System Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more. Refer to INITIALIZATION [11/2022 - ] - Learning completes when vehicle is operated normally
Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link Power door lock control system - Back door opener
Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch. Refer to INITIALIZATION [11/2022 - ] Power back door system Fully close the back door by hand.
HINT:
Initialization is not necessary if the above procedures are performed while the back door is closed.Refer to INITIALIZATION [09/2021 - ] Air conditioning system After the ignition switch is turned to ON, the servo motor standard position is recognized. -