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Home >> Toyota >> 2025 >> Prius Plug-In Hybrid SE >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes, Symptom Tests & Circuit Tests >> Meter / Gauge System >> Hybrid System Indicator Malfunction [12/2022 - 03/2023] >> Procedure

Hybrid System Indicator Malfunction [12/2022 - 03/2023]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if CAN communication DTCs are output.

      Refer to DIAGNOSIS SYSTEM [12/2022 - ]

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2022 - ] 

    Result: 

    A 

    See step  2

  2. CHECK FOR DTC (HYBRID CONTROL SYSTEM) 
    1. Check if hybrid control system DTCs are output.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO HYBRID CONTROL SYSTEM 

    for M20A-FXS: Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2022 - ]

    Result: 

    A 

    See step  3

  3. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Combination Meter > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      HV/EV System Indicator Hybrid system indicator value Min.: -100%, Max.: 511% or Unset Current hybrid system indicator status "Unset" is displayed when the vehicle is stopped and the ignition switch is ON (READY).

      Body Electrical > Combination Meter > Data List 

      Tester Display
      HV/EV System Indicator

      OK

      Hybrid system indicator value displayed on the GTS is almost the same as the hybrid system indicator indication.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    GO TO HYBRID CONTROL SYSTEM 

    for M20A-FXS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2022 - ]

    Result: 

    NG 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2022 - ]