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DTC B15CE: Seatback Display Disconnected: Procedure

  1. CHECK DTC 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
    2. Recheck for DTCs and check if the same trouble occurs again.

      Result

      Result Proceed to
      B15CE is output. A
      No DTCs are output. B

    B → END 

    A: Go to next step 

  2. CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) 
    1. Check for optional components.
      1. Check that optional components (including associated wiring) which generate radio waves are not installed.

        Result

        Result Proceed to
        Optional components (including associated wiring) are installed. A
        Optional components (including associated wiring) are not installed. B

        HINT: 

        • Electrical noise from radio waves generated by optional components or the wiring for those components may affect AVC-LAN communication.
        • This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.

    B → See step   4 

    A: Go to next step 

  3. REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) 
    1. Remove optional components (including associated wiring).
      NOTE:

      Do not remove optional components or associated wiring without the permission of the customer.

    NEXT: Go to next step 

  4. CHECK DTC 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
    2. Recheck for DTCs and check if the same trouble occurs again.

      OK

      No DTCs are output.

    NG → See step   5 

    OK → END 

  5. CHECK OPERATION 
    1. Check which television display assembly does not operate.

      Result

      Result Proceed to
      The television display assembly LH does not operate. A
      The television display assembly RH does not operate. B

    B → See step   10 

    A: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY LH POWER SOURCE) 
    1. Disconnect the television display assembly LH connector.
      Fig 1: Television Display Assembly LH Connector
      GTY357918Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      a17-12 (PWR2) - a17-20 (GND) Engine switch on (IG) 11 to 14 V
      a17-12 (PWR2) - a17-19 (GND2) Engine switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Television Display Assembly LH)

    NG → See step   9 

    OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - TELEVISION DISPLAY ASSEMBLY LH) 
    1. Disconnect the multi-display controller sub-assembly connector.
      Fig 2: Multi-Display Controller Sub-Assembly Connector
      GTY350819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the television display assembly LH connector.
      Fig 3: Television Display Assembly LH Connector
      GTY357917Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      P9-5 (TX2+) - a17-8 (TX2+) Always Below 1 Ω
      P9-6 (TX2-) - a17-9 (TX2-) Always Below 1 Ω
      P9-5 (TX2+) - Body ground Always 10 kΩ or higher
      P9-6 (TX2-) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Multi-display Controller Sub-assembly)
      *2 Front view of wire harness connector
      (to Television Display Assembly LH)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  8. REPLACE TELEVISION DISPLAY ASSEMBLY LH 
    1. Replace the television display assembly LH. Refer to REMOVAL .
    2. Clear the DTCs. Refer to DTC CHECK / CLEAR .
    3. Recheck for DTCs and check if the same trouble occurs again.

      OK

      No DTCs are output.

    NG → See step   14 

    OK → END (TELEVISION DISPLAY ASSEMBLY LH WAS DEFECTIVE) 

  9. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - TELEVISION DISPLAY ASSEMBLY LH) 
    1. Disconnect the multi-display controller sub-assembly connector.
      Fig 4: Multi-Display Controller Sub-Assembly Connector
      GTY356418Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the television display assembly LH connector.
      Fig 5: Television Display Assembly LH Connector
      GTY357916Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G16-10 (GND2) - a17-20 (GND) Always Below 1 Ω
      G16-13 (PWR2) - a17-12 (PWR2) Always Below 1 Ω
      G16-24 (GND4) - a17-19 (GND2) Always Below 1 Ω
      G16-10 (GND2) - Body ground Always 10 kΩ or higher
      G16-13 (PWR2) - Body ground Always 10 kΩ or higher
      G16-24 (GND4) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Multi-display Controller Sub-assembly)
      *2 Front view of wire harness connector
      (to Television Display Assembly LH)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   15 

  10. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY RH POWER SOURCE) 
    1. Disconnect the television display assembly RH connector.
      Fig 6: Television Display Assembly RH Connector
      GTY357913Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      Z21-12 (PWR1) - Z21-19 (G1) Engine switch on (IG) 11 to 14 V
      Z21-12 (PWR1) - Z21-20 (G) Engine switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Television Display Assembly RH)

    NG → See step   13 

    OK: Go to next step 

  11. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - TELEVISION DISPLAY ASSEMBLY RH) 
    1. Disconnect the multi-display controller sub-assembly connector.
      Fig 7: Multi-Display Controller Sub-Assembly Connector
      GTY358486Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the television display assembly RH connector.
      Fig 8: Television Display Assembly RH Connector
      GTY357910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      P9-21 (TX1+) - Z21-8 (TX1+) Always Below 1 Ω
      P9-22 (TX1-) - Z21-9 (TX1-) Always Below 1 Ω
      P9-21 (TX1+) - Body ground Always 10 kΩ or higher
      P9-22 (TX1-) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Multi-display Controller Sub-assembly)
      *2 Front view of wire harness connector
      (to Television Display Assembly RH)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  12. REPLACE TELEVISION DISPLAY ASSEMBLY RH 
    1. Replace the television display assembly RH. Refer to REMOVAL .
    2. Clear the DTCs. Refer to DTC CHECK / CLEAR .
    3. Recheck for DTCs and check if the same trouble occurs again.

      OK

      No DTCs are output.

    NG → See step   15 

    OK → END (TELEVISION DISPLAY ASSEMBLY RH WAS DEFECTIVE) 

  13. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - TELEVISION DISPLAY ASSEMBLY RH) 
    1. Disconnect the multi-display controller sub-assembly connector.
      Fig 9: Multi-Display Controller Sub-Assembly Connector
      GTY356417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the television display assembly RH connector.
      Fig 10: Television Display Assembly RH Connector
      GTY357912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G16-9 (GND1) - Z21-20 (G) Always Below 1 Ω
      G16-12 (PWR1) - Z21-12 (PWR1) Always Below 1 Ω
      G16-23 (GND3) - Z21-19 (G1) Always Below 1 Ω
      G16-9 (GND1) - Body ground Always 10 kΩ or higher
      G16-12 (PWR1) - Body ground Always 10 kΩ or higher
      G16-23 (GND3) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Multi-display Controller Sub-assembly)
      *2 Front view of wire harness connector
      (to Television Display Assembly RH)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   15 

  14. REPLACE MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY. Refer to  REMOVAL 
  15. REPLACE MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY. Refer to  REMOVAL 
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