DTC P0A7F-123: Hybrid Battery Pack Deterioration [08/2013 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Read output DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ] .

   Result

   Result	Proceed to
   P0AFC-123 is not output.	A
   P0AFC-123 is also output.	B

5. Disconnect the Techstream from the DLC3.

B → See step   5 

A: Go to next step 

1. Ensure the safety of the areas in front and at the back of the vehicle.
2. Apply the parking brake and secure the wheels using chocks.
3. Connect the Techstream to the DLC3.
4. Turn the power switch on (READY).
5. Fully warm up the engine and turn the air conditioning off.
6. Enter the following menus: Powertrain / Hybrid Control / Data List / Battery block Vol - V01 to V14.
7. Firmly depress the brake pedal with your left foot.
8. Move the select lever to D.
9. Record each battery block voltage from the data list (Battery block Vol -V01 to V14) while fully depressing the accelerator pedal.
10. Compare the battery block voltages (Battery block Vol -V01 to V14) between the even and odd number groups in each combination shown in the table below.
    TABLE 1
    
    

    Circuit A Battery Block	Circuit B Battery Block	Condition
    Battery Block Vol-V01 (VB1)	Battery Block Vol-V02 (VB2)	"Battery Block Vol - V01" - "Battery Block Vol - V02" = 0.3 V or more
    Battery Block Vol-V04 (VB4)	Battery Block Vol-V03 (VB3)	"Battery Block Vol - V04" - "Battery Block Vol - V03" = 0.3 V or more
    Battery Block Vol-V05 (VB5)	Battery Block Vol-V06 (VB6)	"Battery Block Vol - V05" - "Battery Block Vol - V06" = 0.3 V or more
    Battery Block Vol-V08 (VB8)	Battery Block Vol-V07 (VB7)	"Battery Block Vol - V08" - "Battery Block Vol - V07" = 0.3 V or more
    Battery Block Vol-V09 (VB9)	Battery Block Vol-V10 (VB10)	"Battery Block Vol - V09" - "Battery Block Vol - V10" = 0.3 V or more
    Battery Block Vol-V12 (VB12)	Battery Block Vol-V11 (VB11)	"Battery Block Vol - V12" - "Battery Block Vol - V11" = 0.3 V or more
    Battery Block Vol-V13 (VB13)	Battery Block Vol-V14 (VB14)	"Battery Block Vol - V13" - "Battery Block Vol - V14" = 0.3 V or more

    TABLE 2
    
    

    Circuit A Battery Block	Circuit B Battery Block	Condition
    Battery Block Vol-V01 (VB1)	Battery Block Vol-V02 (VB2)	"Battery Block Vol - V02" - "Battery Block Vol - V01" = 0.3 V or more
    Battery Block Vol-V04 (VB4)	Battery Block Vol-V03 (VB3)	"Battery Block Vol - V03" - "Battery Block Vol - V04" = 0.3 V or more
    Battery Block Vol-V05 (VB5)	Battery Block Vol-V06 (VB6)	"Battery Block Vol - V06" - "Battery Block Vol - V05" = 0.3 V or more
    Battery Block Vol-V08 (VB8)	Battery Block Vol-V07 (VB7)	"Battery Block Vol - V07" - "Battery Block Vol - V08" = 0.3 V or more
    Battery Block Vol-V09 (VB9)	Battery Block Vol-V10 (VB10)	"Battery Block Vol - V10" - "Battery Block Vol - V09" = 0.3 V or more
    Battery Block Vol-V12 (VB12)	Battery Block Vol-V11 (VB11)	"Battery Block Vol - V11" - "Battery Block Vol - V12" = 0.3 V or more
    Battery Block Vol-V13 (VB13)	Battery Block Vol-V14 (VB14)	"Battery Block Vol - V14" - "Battery Block Vol - V13" = 0.3 V or more

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT: 

    When an internal malfunction occurs in the battery smart unit, this symptom (difference in voltage of 0.3 V or more for all 7 pairs of blocks) will occur.

    Result

    Result	Proceed to
    All conditions in table 1 are met.	A
    All conditions in table 2 are met.
    Other than above.	B

11. Turn the power switch off.
12. Disconnect the Techstream from the DLC3.

B → See step   4 

A → See step   3