HYBRID BATTERY SYSTEM, Diagnostic DTC:P301B-123

DTC Code DTC Name
P301B-123 Hybrid Battery Cell Voltage Detection Circuit Range/Performance

DESCRIPTION


DTC No. INF Code DTC Detection Condition Trouble Area
P301B 123 Hybrid battery cell voltage detection circuit malfunction (1 trip detection) Battery smart unit

Tech Tips

If DTC P301B-123 is output, the following DTCs related to a hybrid battery cell high/low voltage malfunction and/or an open in the hybrid battery cell voltage detection circuit may be output simultaneously. Perform troubleshooting for DTC P301B-123 first.

P31AB-123, P31AA-123, P31AC-123, P301A-123

WIRING DIAGRAM

Refer to the wiring diagram for DTC P301A-123 Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch 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 power switch off.


    A

    REPLACE BATTERY SMART UNIT Click here

    B

    GO TO DTC CHART (P0AFC-123) Click here