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Speaker Circuit [10/2014 - ]: Procedure

  1. CHECK SPEAKER (OPERATION CHECK) 
    1. Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check (Refer to OPERATION CHECK [10/2014 - 10/2015] or OPERATION CHECK [10/2015 - ] ).
      GTY452678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Perform the operation check above and determine the speaker that is not operating.

      Result

      Result Proceed to
      Front No. 1 speaker assembly or front No. 2 speaker assembly
      (w/ Manual (SOS) Switch)      		 A
      Front No. 1 speaker assembly or front No. 2 speaker assembly
      (w/o Manual (SOS) Switch)      		 B
      Rear speaker assembly or rear No. 2 speaker assembly C

      HINT: 

      If sound cannot be heard from any speaker, inspect all of them.

    Result: 

    B 

    See step  4

    Result: 

    C 

    See step  8

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER) - FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY) 
    1. Disconnect the E1 radio and display receiver assembly connector.
    2. Disconnect the E11 DCM (telematics transceiver) connector.
    3. Disconnect the D47 and D1 front No. 2 speaker assembly connectors.
    4. Disconnect the F6 and G6 front No. 1 speaker assembly connectors.
    5. Measure the resistance between the radio and display receiver assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E1-1 (FR+) - E11-2 (SPI+) Always Below 1 Ω
      E1-5 (FR-) - E11-3 (SPI-) Always Below 1 Ω
    6. Measure the resistance between the DCM (telematics transceiver) and the front No. 1 and No. 2 speaker assembly RH to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E11-5 (SPO+) - D47-4 (TWR+) Always Below 1 Ω
      E11-6 (SPO-) - D47-2 (TWR-) Always Below 1 Ω
      E11-5 (SPO+) - F6-1 Always Below 1 Ω
      E11-6 (SPO-) - F6-2 Always Below 1 Ω
    7. Measure the resistance between the radio and display receiver assembly and the front No. 1 and No. 2 speaker assembly LH to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E1-2 (FL+) - D1-4 (TWL+) Always Below 1 Ω
      E1-6 (FL-) - D1-2 (TWL-) Always Below 1 Ω
      E1-2 (FL+) - G6-1 Always Below 1 Ω
      E1-6 (FL-) - G6-2 Always Below 1 Ω
    8. Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E1-1 (FR+) - Body ground Always 10 kΩ or higher
      E1-5 (FR-) - Body ground Always 10 kΩ or higher
      E1-2 (FL+) - Body ground Always 10 kΩ or higher
      E1-6 (FL-) - Body ground Always 10 kΩ or higher
    9. Measure the resistance between the DCM (telematics transceiver) and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E11-5 (SPO+) - Body ground Always 10 kΩ or higher
      E11-6 (SPO-) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. INSPECT DCM (TELEMATICS TRANSCEIVER) 
    1. Remove the DCM (telematics transceiver) (Refer to REMOVAL [10/2014 - ] ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY473616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      2 (SPI+) - 5 (SPO+) Always Below 1 Ω
      3 (SPI-) - 6 (SPO-) Always Below 1 Ω
      2 (SPI+) - 3 (SPI-) Always 10 kΩ or higher
      5 (SPO+) - 6 (SPO-) Always 10 kΩ or higher
      2 (SPI+) - Body ground Always 10 kΩ or higher
      3 (SPI-) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (DCM (Telematics Transceiver))
    3. Proceed to the next step based on the inspection result.

      Result

      Result Proceed to
      NG A
      OK B
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (DCM (Telematics Transceiver))

    Result: 

    A 

    REPLACE DCM (TELEMATICS TRANSCEIVER) 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    B 

    See step  5

  4. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT SPEAKER) 
    1. Disconnect the E1 radio and display receiver assembly connector.
    2. Disconnect the D47 and D1 front No. 2 speaker assembly connectors.
    3. Disconnect the F6 and G6 front No. 1 speaker assembly connectors.
    4. Measure the resistance between each of the front No. 2 speaker assemblies and the radio and display receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E1-1 (FR+) - D47-4 (TWR+) Always Below 1 Ω
      E1-5 (FR-) - D47-2 (TWR-) Always Below 1 Ω
      E1-2 (FL+) - D1-4 (TWL+) Always Below 1 Ω
      E1-6 (FL-) - D1-2 (TWL-) Always Below 1 Ω
    5. Measure the resistance between each of the front No. 1 speaker assemblies and the radio and display receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E1-1 (FR+) - F6-1 Always Below 1 Ω
      E1-5 (FR-) - F6-2 Always Below 1 Ω
      E1-2 (FL+) - G6-1 Always Below 1 Ω
      E1-6 (FL-) - G6-2 Always Below 1 Ω
    6. Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E1-1 (FR+) - Body ground Always 10 kΩ or higher
      E1-5 (FR-) - Body ground Always 10 kΩ or higher
      E1-2 (FL+) - Body ground Always 10 kΩ or higher
      E1-6 (FL-) - Body ground Always 10 kΩ or higher

    Result: 

    OK 

    See step  3

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Remove the front No. 2 speaker assembly (Refer to REMOVAL [10/2014 - ] ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY479775Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 (TWR+) - 2 (TWR-) Always 10 kΩ or higher
      4 (TWL+) - 2 (TWL-) Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

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

    Result: 

    NG 

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  6

  6. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).

      OK

      Malfunction disappears.

      HINT: 

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

    Result: 

    OK 

    END 

    Result: 

    NG 

    See step  7

  7. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Remove the front No. 1 speaker assembly (Refer to REMOVAL [10/2014 - ] ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY374348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

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

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    (Refer to PROBLEM SYMPTOMS TABLE [10/2014 - 10/2015] or PROBLEM SYMPTOMS TABLE [10/2015 - ] )

    Result: 

    NG 

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

  8. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY) 
    1. Disconnect the E2 radio and display receiver assembly connector.
    2. Disconnect the K13 and K16 rear speaker assembly connectors.
    3. Disconnect the H3 and I3 rear No. 2 speaker assembly connectors.
    4. Measure the resistance between each of the rear speaker assemblies and the radio and display receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E2-1 (RR+) - K13-1 Always Below 1 Ω
      E2-3 (RR-) - K13-2 Always Below 1 Ω
      E2-2 (RL+) - K16-1 Always Below 1 Ω
      E2-6 (RL-) - K16-2 Always Below 1 Ω
    5. Measure the resistance between each of the rear No. 2 speaker assemblies and the radio and display receiver assembly to check for an open circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E2-1 (RR+) - H3-4 Always Below 1 Ω
      E2-3 (RR-) - H3-2 Always Below 1 Ω
      E2-2 (RL+) - I3-4 Always Below 1 Ω
      E2-6 (RL-) - I3-2 Always Below 1 Ω
    6. Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E2-1 (RR+) - Body ground Always 10 kΩ or higher
      E2-3 (RR-) - Body ground Always 10 kΩ or higher
      E2-2 (RL+) - Body ground Always 10 kΩ or higher
      E2-6 (RL-) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. INSPECT REAR SPEAKER ASSEMBLY 
    1. Remove the rear speaker assembly (Refer to REMOVAL [10/2014 - ] ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY374347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

      *a Component without harness connected
      (Rear Speaker Assembly)

    Result: 

    NG 

    REPLACE REAR SPEAKER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  10

  10. INSPECT REAR NO. 2 SPEAKER ASSEMBLY 
    1. Remove the rear No. 2 speaker assembly (Refer to REMOVAL [10/2014 - ] ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY382828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      2 - 4 Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Rear No. 2 Speaker Assembly)

    Result: 

    NG 

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  11

  11. REPLACE REAR NO. 2 SPEAKER ASSEMBLY 
    1. Check that the malfunction disappears when a new or known good speaker is installed (Refer to REMOVAL [10/2014 - ] ).

      OK

      Malfunction disappears.

      HINT: 

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

    Result: 

    OK 

    END 

    Result: 

    NG 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    (Refer to PROBLEM SYMPTOMS TABLE [10/2014 - 10/2015] or PROBLEM SYMPTOMS TABLE [10/2015 - ] )

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