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Home >> Toyota >> 2022 >> Corolla Cross L, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (Hybrid Battery System - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Hybrid Battery System >> DTC P31B4-00: Extreme Hybrid/EV Battery Charging Current [11/2022 - ] >> Procedure

DTC P31B4-00: Extreme Hybrid/EV Battery Charging Current [11/2022 - ]: Procedure

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  1. CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL) 
    1. Check for DTCs.

      Powertrain > HV Battery > Trouble Codes 

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      "P31B4-00" only is output. A
      DTCs except "P31B4-00" of hybrid battery system are output. B
      DTCs except "P31B4-00" of hybrid control system are output. C
    2. Turn the ignition switch off.

    Result: 

    REPLACE HYBRID VEHICLE CONTROL ECU 

    Refer to REMOVAL [11/2022 - 12/2024] , or refer to REMOVAL [12/2024 - ]

    Result: 

    GO TO DTC CHART (HYBRID BATTERY SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2022 - ] 

    Result: 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2022 - 12/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [12/2024 - ]