HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AC0-817

DESCRIPTION

• The battery current sensor, which is located in the HV battery junction block on the positive side of the HV battery, detects the amperage that flows to and from the HV battery. The battery smart unit receives a voltage of between 0 and 5 V that is in proportion to the amperage flowing in the cable. This voltage goes into the IB terminal from the battery current sensor. A battery current sensor output voltage below 2.5 V indicates that the HV battery is being discharged, and a voltage above 2.5 V indicates that the HV battery is being charged. The power management control ECU determines the amount of either charge or discharge amperage that is being received by the HV battery assembly based on the signals that are input to terminal IB of the battery smart unit from the battery current sensor. The power management control ECU also calculates the SOC (state of charge) of the HV battery based on the accumulated amperage.

  

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (HV)

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the power switch on (IG).

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

   4. Check if DTCs are output.

      Result
      Result Proceed to P0AC0-817 only is output. A P0AFC-123 is output. B

   5. Turn the power switch off.

   
   

   B

   GO TO DTC CHART Click here

   A

2. REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY

   
   

   1. Replace the hybrid battery junction block assembly Click here.

   
   

   NEXT

3. CLEAR DTC

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the power switch on (IG).

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

   4. Read and record the DTCs and freeze frame data.

   5. Clear DTCs and freeze frame data.

   6. Turn the power switch off.

   
   

   NEXT

4. PERFORM ROAD TEST

   
   

   1. Perform a road test.

   
   

   NEXT

5. CHECK DTC OUTPUT (HV)

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the power switch on (IG).

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

   4. Check if DTCs are output.

      Result
      Result Proceed to P0AC0-817 is not output. A P0AC0-817 is output again. B

   5. Turn the power switch off.

   
   

   B

   REPLACE BATTERY SMART UNIT Click here

   A

   COMPLETED