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Home >> Lexus >> 2010 >> RX 350 FWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio / Video System (W/O Navigation) (Diagnostic Codes & Symptom Tests) (2 Of2) >> AUDIO AND VISUAL SYSTEM (w/o Navigation System) >> Speaker Circuit (To 8/2009) >> Procedure

Speaker Circuit (To 8/2009): Procedure

  1. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the connectors shown in the illustration from the stereo component amplifier assembly and speakers.
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Stereo Component Amplifier Assembly)
      *2 Front view of wire harness connector
      (to Stereo Component Amplifier Assembly)
      *3 Front view of wire harness connector
      (to Front No. 2 Speaker)
      *4 Front view of wire harness connector
      (to Front No. 3 Speaker, Front No. 4 Speaker)
      *5 Front view of wire harness connector
      (to Front No. 1 Speaker, Rear No. 1 Speaker)
      Fig 1: Measure The Resistance
      GTY254642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O16-3 (WFL+) - Body ground Always 10 kΩ or higher
      O16-8 (WFL-) - Body ground Always 10 kΩ or higher
      O16-10 (WFR+) - Body ground Always 10 kΩ or higher
      O16-9 (WFR-) - Body ground Always 10 kΩ or higher
      O16-4 (RL+) - Body ground Always 10 kΩ or higher
      O16-11 (RL-) - Body ground Always 10 kΩ or higher
      O16-5 (RR+) - Body ground Always 10 kΩ or higher
      O16-12 (RR-) - Body ground Always 10 kΩ or higher
      O34-1 (FL+) - Body ground Always 10 kΩ or higher
      O34-5 (FL-) - Body ground Always 10 kΩ or higher
      O34-2 (FR+) - Body ground Always 10 kΩ or higher
      O34-6 (FR-) - Body ground Always 10 kΩ or higher
      O34-8 (CTR+) - Body ground Always 10 kΩ or higher
      O34-7 (CTR-) - Body ground Always 10 kΩ or higher
    3. Measure the resistance between each of the front No. 2 speakers and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I5-3 (+) - Body ground Always 10 kΩ or higher
      I5-4 (-) - Body ground Always 10 kΩ or higher
      J4-3 (+) - Body ground Always 10 kΩ or higher
      J4-4 (-) - Body ground Always 10 kΩ or higher
    4. Measure the resistance between each of the front No. 2 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O34-1 (FL+) - J4-1 (TWL+) Always Below 1 Ω
      O34-5 (FL-) - J4-2 (TWL-) Always Below 1 Ω
      O34-2 (FR+) - I5-1 (TWR+) Always Below 1 Ω
      O34-6 (FR-) - I5-2 (TWR-) Always Below 1 Ω
    5. Measure the resistance between each of the front No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O16-3 (WFL+) - J2-1 Always Below 1 Ω
      O16-8 (WFL-) - J2-2 Always Below 1 Ω
      O16-10 (WFR+) - I3-1 Always Below 1 Ω
      O16-9 (WFR-) - I3-2 Always Below 1 Ω
    6. Measure the resistance between the front No. 4 speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O34-8 (CTR+) - H2-2 Always Below 1 Ω
      O34-7 (CTR-) - H2-1 Always Below 1 Ω
    7. Measure the resistance between each of the rear No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O16-4 (RL+) - L4-1 Always Below 1 Ω
      O16-11 (RL-) - L4-2 Always Below 1 Ω
      O16-5 (RR+) - K4-1 Always Below 1 Ω
      O16-12 (RR-) - K4-2 Always Below 1 Ω
    8. Measure the resistance between each of the front No. 3 speakers and front No. 2 speakers to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J4-3 (+) - J6-2 Always Below 1 Ω
      J4-4 (-) - J6-1 Always Below 1 Ω
      I5-3 (+) - I6-2 Always Below 1 Ω
      I5-4 (-) - I6-1 Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  2. INSPECT FRONT NO. 1 SPEAKER 
    1. Resistance check
      Fig 2: Identifying J2 & I3 Connectors
      GTY270139Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        J2-1 - J2-2 Always 3.2 to 4.8 Ω
        I3-1 - I3-2 Always 3.2 to 4.8 Ω
        TEXT IN ILLUSTRATION

        *1 Component without harness connected
        (Front No. 1 Speaker)

    NG → See step   9 

    OK: Go to next step 

  3. INSPECT FRONT NO. 2 SPEAKER 
    1. Resistance check
      Fig 3: Identifying I5 J4 Connectors
      GTY258509Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        I5-1 (TWR+) - I5-2 (TWR-) Always 10 kΩ or higher
        I5-1 (TWR+) - I5-3 (+) Always Below 1 Ω
        I5-2 (TWR-) - I5-4 (-) Always Below 1 Ω
        J4-1 (TWL+) - J4-2 (TWL-) Always 10 kΩ or higher
        J4-1 (TWL+) - J4-3 (+) Always Below 1 Ω
        J4-2 (TWL-) - J4-4 (-) Always Below 1 Ω
        TEXT IN ILLUSTRATION

        *A for RH
        *B for LH
        *1 Component without harness connected
        (Front No. 2 Speaker)

    NG → See step   10 

    OK: Go to next step 

  4. REPLACE FRONT NO. 2 SPEAKER 
    1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL .

      OK

      Malfunction disappears.

      HINT: 

      • Connect all the connectors to the front No. 2 speakers that were disconnected.
      • When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.
      • Perform the above inspection on both LH and RH sides.

    NG → See step   5 

    OK → END (FRONT NO. 2 SPEAKER WAS DEFECTIVE) 

  5. INSPECT FRONT NO. 3 SPEAKER 
    1. Resistance check
      Fig 4: Identifying J6 & I6 Connectors
      GTY280728Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        J6-1 - J6-2 Always 3.2 to 4.8 Ω
        I6-1 - I6-2 Always 3.2 to 4.8 Ω
        TEXT IN ILLUSTRATION

        *1 Component without harness connected
        (Front No. 3 Speaker)

    NG → See step   11 

    OK: Go to next step 

  6. INSPECT REAR NO. 1 SPEAKER 
    1. Resistance check
      Fig 5: Identifying L4 & K4 Connectors
      GTY269792Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        L4-1 - L4-2 Always 3.2 to 4.8 Ω
        K4-1 - K4-2 Always 3.2 to 4.8 Ω
        TEXT IN ILLUSTRATION

        *1 Component without harness connected
        (Rear No. 1 Speaker)

    NG → See step   12 

    OK: Go to next step 

  7. INSPECT FRONT NO. 4 SPEAKER 
    1. Resistance check
      Fig 6: Identifying H2 Connector
      GTY275060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        H2-1 - H2-2 Always 4.8 to 7.2 Ω
        TEXT IN ILLUSTRATION

        *1 Component without harness connected
        (Front No. 4 Speaker)

    NG → See step   13 

    OK → See step   8 

  8. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  9. REPLACE FRONT NO. 1 SPEAKER. Refer to  REMOVAL 
  10. REPLACE FRONT NO. 2 SPEAKER. Refer to  REMOVAL 
  11. REPLACE FRONT NO. 3 SPEAKER. Refer to  REMOVAL 
  12. REPLACE REAR NO. 1 SPEAKER. Refer to  REMOVAL 
  13. REPLACE FRONT NO. 4 SPEAKER. Refer to  REMOVAL 
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