HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A80-123

DESCRIPTION

• The power management control ECU controls the SOC (state of charge) of the HV battery at a constant level during driving. The HV battery is composed of 20 modules, and each module consists of six 1.2 V cells in series. The battery smart unit monitors battery block voltage at 10 locations. Each battery block is composed of 2 modules in a set.

  

  *1	Battery Block
  *2	Battery Module
  *3	Battery Smart Unit

  DTC No.	INF Code	DTC Detection Condition	Trouble Area
  P0A80	123	Difference in voltage between battery blocks is larger than the standard (2 trip detection)	HV battery Battery smart unit

  Tech Tips

  
  

  • P0A80-123 will not be store unless the vehicle is driven for approximately 10 minutes after clearing the DTC.

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK FOR DTCS (HYBRID CONTROL)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON (IG).

   3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

   4. Read output DTCs Click here.

      Result

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

   5. Turn the ignition switch off.

   
   

   B

   GO TO DTC CHART (P0AFC-123) Click here

   A

2. CHECK BATTERY SMART UNIT

   
   

   1. Ensure the safety of the areas in front and at the back of the vehicle.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON (READY).

   4. Fully warm up the engine and turn the air conditioning off.

   5. Enter the following menus: Powertrain / Hybrid Control / Data List / Battery block Vol - V01 to V10.

   6. Firmly depress the brake pedal with your left foot.

   7. Move the select lever to D.

   8. Record each battery block voltage from the data list (Battery block Vol -V01 to V10) while fully depressing the accelerator pedal.

   9. Compare the battery block voltages (Battery block Vol -V01 to V10) between the even and odd number groups in each combination shown in the table below.

      Odd Number Group	Even Number Group	Battery Block Voltages to be Compared
      Battery block Vol - V01	Battery block Vol - V02	V01 - V02
      Battery block Vol - V03	Battery block Vol - V04	V03 - V04
      Battery block Vol - V05	Battery block Vol - V06	V05 - V06
      Battery block Vol - V07	Battery block Vol - V08	V07 - V08
      Battery block Vol - V09	Battery block Vol - V10	V09 - V10

   10. Check the difference between each pair of battery block voltages.

       Result

       Result	Proceed to
       Difference in voltage of all 5 pairs of blocks is 0.3 V or more.	A
       Other than above.	B

       Tech Tips

       When an internal malfunction occurs in the battery smart unit, this symptom (difference in voltage of 0.3 V or more for all 5 pairs of blocks) will occur.

       

       *1	Example: When difference in voltage of all 5 pairs of blocks is 0.3 V or more
       *2	When voltage of odd number battery blocks is 0.3 V or more higher than that of even number battery blocks.
       *3	0.3 V or more
       *4	When voltage of odd number battery blocks is 0.3 V or more lower than that of even number battery blocks.

   11. Turn the ignition switch off.

   
   

   A

   REPLACE BATTERY SMART UNIT Click here

   B

   REPLACE HV BATTERY Click here