DTC P1602: Deterioration of Battery [12/2012 - ]: Procedure

2013 Toyota RAV4 LE, FWDSECTION Procedure
  1. CHECK CHARGING SYSTEM 
    1. Check the charging system.

      Refer to ON-VEHICLE INSPECTION [12/2012 - 11/2013] , or refer to ON-VEHICLE INSPECTION [11/2013 - 10/2015] , or refer to ON-VEHICLE INSPECTION [10/2015 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CHARGING SYSTEM 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Disconnect the A58 generator control ECU assembly connector.
      GTY361942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Generator Control ECU Assembly)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A58-5 (AM21) - Body ground Always 11 to 14 V

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS:  HOW TO PROCEED WITH TROUBLESHOOTING [12/2012 - 11/2013]  ,  HOW TO PROCEED WITH TROUBLESHOOTING [11/2013 - 10/2015]  ,  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 08/2016]  ,  HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - 08/2017]  ,  HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.