DTC B22DA: Sub Battery Module Protection Relay Stuck Close [12/2017 - 10/2023]: Procedure

REPLACE SUB-BATTERY MODULE ASSEMBLY

NOTE:

If B22DA is output, the protective relay inside the sub-battery module assembly is stuck closed. As a result, sub-battery voltage is output from +BAT terminal normally.

Take care when removing the sub-battery module assembly.

Refer to the following procedures for removing the connector cover from the luggage compartment mat sub-assembly.
Refer to PROCEDURE - Step 11 [12/2017 - 09/2018] , or refer to PROCEDURE - Step 11 [09/2018 - 10/2020] , or refer to PROCEDURE - Step 8 [10/2020 - 10/2022] , or refer to PROCEDURE - Step 8 [10/2022 - 10/2023]

Remove the sub-battery module assembly.

Loosen the 2 nuts and disconnect the 2 sub-battery terminals from the sub-battery module assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE:

To prevent shorts in the +BAT and -BAT terminals in the removed sub-battery, wrap them in protective tape.

Disconnect the connector from the sub-battery module assembly.

Loosen the 2 nuts and remove from the sub-battery module assembly.

Install the sub-battery module assembly.

Refer to INSTALLATION [12/2017 - 10/2020] , or refer to INSTALLATION [10/2020 - 10/2023]

Result

Proceed to
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Result:

END