HYBRID BATTERY SYSTEM, Diagnostic DTC:P1AFD1C

DTC Code DTC Name
P1AFD1C Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range

DESCRIPTION

The battery ECU assembly monitors the HV battery voltage. If the battery ECU assembly detects a malfunction of its internal voltage detection circuits, it will store this DTC.

Tech Tips

If this DTC is output, it will be necessary to replace the battery ECU assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P1AFD1C Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range

Both of the following conditions are met:

The battery ECU assembly detects a malfunction of its internal voltage detection circuits.

The difference between the total voltage of all battery cells and the stack voltage is large.

(1 trip detection logic)

 Battery ECU assembly Comes on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P1AFD1C

  • Hybrid Battery Cell 1 to 95 Voltage

  • Hybrid Battery Voltage

CONFIRMATION DRIVING PATTERN

Tech Tips

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. With power switch on (IG) and wait for 10 seconds or more.

  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.

  8. Check the DTC judgment result.

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY CONNECTOR)

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


    1. Check that the service plug grip is not installed.

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the upper hybrid battery cover sub-assembly.

      Click here

    3. B006IELN02

      Check the connections of the z20, z21, z22, z23 and z24 battery ECU assembly connector.

      Click here

      OK
      The connector is connected securely and there are no contact problems.
      Result
      Result Proceed to
      OK A
      Not connected securely The terminals are not damaged or corroded B
      Either connector z20 was not connected securely The terminals are damaged or corroded C
      Either connector z21 was not connected securely The terminals are damaged or corroded D
      Either connector z22 was not connected securely The terminals are damaged or corroded E
      Either connector z23 was not connected securely The terminals are damaged or corroded F
      Either connector z24 was not connected securely The terminals are damaged or corroded G

    4. Install the upper hybrid battery cover sub-assembly.


    B

    CONNECT SECURELY

    C

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY Click here

    D

    REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY Click here

    E

    REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY Click here

    F

    REPLACE NO. 4 HV SUPPLY STACK SUB-ASSEMBLY Click here

    G

    REPLACE NO. 5 HV SUPPLY STACK SUB-ASSEMBLY Click here

    A

  2. REPLACE BATTERY ECU ASSEMBLY

    Click here

    Result
    Proceed to
    NEXT

    NEXT

    COMPLETED