DTC B2300: Disconnection between Auxiliary Battery and Sub Battery Module [12/2017 - 10/2023]: Procedure

1. 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]

2. Check the installation condition of the +BAT terminal.

   Result

   If there is looseness, tighten it to the specified torque.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	+BAT Terminal

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE BATTERY TERMINAL 

Result: 

OK 

See step  2

1. Check the condition of the No. 1 luggage room wire.

   Result

   The No. 1 luggage room wire is not discolored or corroded.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	No. 1 Luggage Room Wire

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NO. 1 LUGGAGE ROOM WIRE 

Result: 

OK 

See step  3

1. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   P13-1 (+BAT) - 6A-1 (BAT2)	Always	Below 1 Ω
   P13-1 (+BAT) - Body ground and other terminals	Always	10 kΩ or higher
   6A-1 (BAT2) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NO. 1 LUGGAGE ROOM WIRE 

Result: 

OK 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs.

   Body Electrical > Sub Battery Module > Clear DTCs 

5. Turn the engine switch off and wait for at least 30 seconds.
6. Turn the engine switch on (IG) and turn the Techstream on.
7. Start the engine and wait for at least 3 minutes.
8. Enter the following menus: Body Electrical / Sub Battery Module / Trouble Codes.

   Body Electrical > Sub Battery Module > Trouble Codes 

9. Check that DTCs are not output.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END