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)

Fig 1: HV Relay Assembly Removal Components With Torque Specifications (1 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002© TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1	PRECAUTION	-	See step 1	-	-
2	SERVICE PLUG GRIP	G3834	-	-	-
3	REMOVE CONNECTOR COVER ASSEMBLY	-	See step 3	-	-
4	TERMINAL VOLTAGE	-	See step 4	-	-
5	INSTALL CONNECTOR COVER ASSEMBLY	-	See step 5	-	-

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

Fig 2: HV Relay Assembly Removal Components (2 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6	REAR CENTER SEAT OUTER BELT ASSEMBLY	73350C	-	-	-
7	BENCH TYPE REAR SEAT CUSHION ASSEMBLY	-	See step 7	-	-
8	REAR SEAT CUSHION LOCK HOOK	72693	-	-	-
9	REAR DOOR SCUFF PLATE RH	67917A	-	-	-
10	REAR UNDER SIDE COVER RH	76973F	-	-	-
11	REAR DOOR SCUFF PLATE LH	67918A	-	-	-
12	REAR UNDER SIDE COVER LH	76974F	-	-	-
13	REAR UNDER COVER	76971G	-	-	-
14	REAR SEAT CUSHION LEG SUB-ASSEMBLY	71033	-	-	-

•

Non-reusable part

Fig 3: HV Relay Assembly Removal Components (3 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
15	NO. 1 HYBRID BATTERY SHIELD SUB-ASSEMBLY	G920Q	See step 15	-	-
16	FLOOR UNDER WIRE	821H1	See step 16	-	-
17	FLOOR WIRE	82161	See step 17	-	-
18	NO. 1 TRACTION BATTERY DEVICE BOX	G384B	See step 18	-	-

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during HV battery junction block 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 HV battery junction block 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.

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.	-