Inspection Procedure

2005 Toyota 4Runner SR5, 4.7 T, AWDSECTION Inspection Procedure
  1. CHECK IF RADIO AUTO-SEARCH FUNCTIONS PROPERLY 
    1. Check if the radio auto-search function properly.
      1. Perform the auto-research of the radio and check that the operation is normal.

        Standard: malfunction disappear. 

    1. NG: Go to step   5 

    OK: Go to next step. 

  2. PRESS "EJECT" AND CHECK OPERATION 
    1. Press "EJECT" and check the operation.
      1. Press the cassette tape EJECT switch of the radio receiver assembly for 2 sec. or more and check that the cassette tape is ejected.

        Standard: The cassette tape is ejected. 

    1. NG: CHECK AND REPLACE RADIO RECEIVER ASSY 

    OK: Go to next step. 

  3. CHECK CASSETTE TAPE 
    1. Check the cassette tape.
      1. Check that the ejected cassette tape does not have the label peeling, cassette body deformation and others.

        Standard: No fault on the cassette tape. 

    1. NG: CASSETTE TAPE FAULTY 

    OK: Go to next step. 

  4. REPLACE CASSETTE TAPE WITH ANOTHER AND RECHECK 
    1. Replace the cassette tape with another and recheck.
      1. Replace the faulty cassette tape with the normal one to see if the same trouble occurs again.

        Standard: malfunction disappear. 

    1. OK: CASSETTE TAPE FAULTY 

    NG: Go to next step. 

  5. INSPECT RADIO RECEIVER ASSY (BU+B, ACC+B, GND) 
    1. Check that the continuity between terminals at each condition, as shown in the chart.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART (1 OF 2)

      Tester connection Condition Specified condition
      GND - Body ground Constant Continuity
      Fig 1: Checking Continuity Between Terminals (6 Speaker (Built-In AMP))
      G02577457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the voltage between terminals at each condition, as shown in the chart.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART (2 OF 2)

      Tester connection Condition Specified condition
      BU+B - GND/E Constant 10-14V
      ACC+B - GND/E Ignition switch ACC or ON 10-14V
      Fig 2: Checking Voltage Between Terminals (Except 6 Speaker (Separate AMP))
      G02577458Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: CHECK AND REPLACE RADIO RECEIVER ASSY 

    NG: Go to next step. 

    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.