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Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSY - SPEAKER ASSY) 
    1. Disconnect the connectors from the stereo component amplifier assy S12 and speakers.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TERMINALS RESISTANCE

      Tester connection Specified condition
      FL+ - 1 (Front No.1 speaker assy LH) Below 1 Ω
      FL- - 2 (Front No.1 speaker assy LH) Below 1 Ω
      FR+ - 1 (Front No.1 speaker assy RH) Below 1 Ω
      FR- - 2 (Front No.1 speaker assy RH) Below 1 Ω
      FL+ - 1 (Front No.2 speaker assy LH) Below 1 Ω
      FL- - 2 (Front No.2 speaker assy LH) Below 1 Ω
      FR+ - 1 (Front No.2 speaker assy RH) Below 1 Ω
      FR- - 2 (Front No.2 speaker assy RH) Below 1 Ω
      RL+ - 2(1), (2) (Rear speaker assy LH) Below 1 Ω
      RL- - 1(1), (2) (Rear speaker assy LH) Below 1 Ω
      RR+ - 2(1), (2) (Rear speaker assy RH) Below 1 Ω
      RR- - 1(1), (2) (Rear speaker assy RH) Below 1 Ω
      FL- - Body ground 10 kΩ or higher
      FR+ - Body ground 10 kΩ or higher
      FR- - Body ground 10 kΩ or higher
      TWL+ - Body ground 10 kΩ or higher
      TWL- - Body ground 10 kΩ or higher
      TWR+ - Body ground 10 kΩ or higher
      TWR- - Body ground 10 kΩ or higher
      RL+ - Body ground 10 kΩ or higher
      RL- - Body ground 10 kΩ or higher
      RR+ - Body ground 10 kΩ or higher
      RR- - Body ground 10 kΩ or higher
      (1) TMC Made
      (2) TMMK Made
      Fig 1: Disconnecting Connectors From Stereo Component Amplifier Assy S12 And Speakers
      G02895086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 2: Identifying Front No 1 Speaker Assy Connector
      G02895087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 3: Identifying Front No 2 Speaker Assy Connector
      G02895088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Identifying Rear Speaker Assy Connector
      G02895089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  2. INSPECT FRONT NO. 1 SPEAKER ASSY 
    1. Resistance check.
      1. Measure the resistance between the terminals of the speaker.
      NOTE: The speaker should not be removed for checking.

      Standard: 3 to 4 Ω 

    1. NG: REPLACE FRONT NO. 1 SPEAKER ASSY (SEE  REPLACEMENT  ) 
    2. OK: Go to next step. 
  3. INSPECT FRONT NO. 2 SPEAKER ASSY 
    1. Check that malfunction disappears when another speaker in a good condition is installed.

      Standard: Malfunction disappears. 

      HINT:

      • Connect all the connectors to the speakers.
      • When there is a possibility that either right or left front speaker is defective, inspect by interchanging the right one and the left one.
    1. OK: REPLACE FRONT NO. 2 SPEAKER ASSY (SEE  REPLACEMENT  ) 
    2. NG: Go to next step. 
  4. INSPECT REAR SPEAKER ASSY 
    1. Resistance check.
      1. Measure the resistance between the terminals of the speaker.
      NOTE: The speaker should not be removed for checking.

      Standard: 1.75 to 2.75 Ω 

    1. NG: REPLACE REAR SPEAKER ASSY (SEE  REPLACEMENT  ) 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (see  PROBLEM SYMPTOMS TABLE  ) 
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