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Home >> Toyota >> 2020 >> Highlander L, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Battery / Charging System (T24A-FTS) - Diagnostic Codes & Symptom Tests) >> Charging System >> DTC P1602-00: Deterioration of Battery Low Capacity [10/2022 - ] >> Procedure

DTC P1602-00: Deterioration of Battery Low Capacity [10/2022 - ]: Procedure

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  1. CHECK CHARGING SYSTEM 

    Refer to ON-VEHICLE INSPECTION [10/2022 - ] 

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPAIR OR REPLACE CHARGING SYSTEM 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Disconnect the ECM connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      C89-1 (BATT) - Body ground Always 11 to 14 V
      GTY1249942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR