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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio / Video System (14 Inch Display) - Diagnostic Codes (2 Of 2) & Symptom Tests >> AUDIO AND VISUAL SYSTEM (for 14 Inch Display) >> DTC U11D0-87: Lost Local Communication with MET Missing Message; DTC U11D3-87: Lost Local Communication with Qi Missing Message [10/2022 - ] >> Procedure

DTC U11D0-87: Lost Local Communication with MET Missing Message; DTC U11D3-87: Lost Local Communication with Qi Missing Message [10/2022 - ]: Procedure

  1. CHECK MODEL 

    Result

    Result Proceed to
    w/o Headup display system A
    w/ Headup display system B

    Result: 

    B 

    See step  12

    Result: 

    A 

    See step  2

  2. CHECK MODEL 

    Result

    Result Proceed to
    w/ Mobile wireless charger system A
    w/o Mobile wireless charger system B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  3

  3. CHECK FOR DTC OUTPUT 
    1. Check for DTCs and proceed to the following step.

      Body Electrical > Navigation System > Trouble Codes 

      Body Electrical > Combination Meter > Trouble Codes 

      Symptoms System
      Navigation system Combination meter
      Symptom 1 U11D0-87
      U11D3-87      		 B1321-87
      Symptom 2 U11D0-87 B1321-87
      Symptom 3 U11D3-87 -
      Symptom 4 U11D0-87
      U11D3-87      		 -

      Result

      Result Proceed to
      Listed under symptom 1 in combination table A
      Listed under symptom 2 in combination table B
      Listed under symptom 3 in combination table C
      Listed under symptom 4 in combination table D

    Result: 

    B 

    See step  7

    Result: 

    C 

    See step  8

    Result: 

    D 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

    Result: 

    A 

    See step  4

  4. CHECK MOBILE WIRELESS CHARGER CRADLE ASSEMBLY 

    Pre-procedure1

    • Disconnect the d1 mobile wireless charger cradle assembly connector.
    • Check for DTCs and proceed to the following step.

      Body Electrical > Navigation System > Trouble Codes 

      Result

      Result Proceed to
      U11D0-87 and U11D3-87 are output A
      U11D3-87 is output B

    Post-procedure1

    • None

    Result: 

    B 

    REPLACE MOBILE WIRELESS CHARGER CRADLE ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

    Result: 

    A 

    See step  5

  5. CAN BUS WIRE (COMBINATION METER ASSEMBLY MAIN BUS) 

    Pre-procedure1

    • Disconnect the cable from the negative (-) auxiliary battery terminal.
    • Disconnect the C19 combination meter assembly connector.
    • Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition Result
      C19-32 (TX+) - C19-15 (TX-) Negative (-) auxiliary battery terminal disconnected 108 to 132 Ω Ω
      C19-32 (TX+) - C58-4 (CG) Negative (-) auxiliary battery terminal disconnected 200 Ω or higher Ω
      C19-15 (TX-) - C58-4 (CG) Negative (-) auxiliary battery terminal disconnected 200 Ω or higher Ω
      C19-32 (TX+) - C58-16 (BAT) Negative (-) auxiliary battery terminal disconnected 6 kΩ or higher kΩ
      C19-15 (TX-) - C58-16 (BAT) Negative (-) auxiliary battery terminal disconnected 6 kΩ or higher kΩ

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2022 - 10/2024]  , or refer to  REMOVAL [10/2024 - ] 

    Result: 

    NG 

    See step  6

  6. CAN BUS WIRE (RADIO AND DISPLAY RECEIVER ASSEMBLY MAIN BUS) 

    Pre-procedure1

    • Disconnect the cable from the negative (-) auxiliary battery terminal.
    • Disconnect the C2 radio and display receiver assembly connector.
    • Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition Result
      C2-11(CNH1) - C2-12(CNL1) Negative (-) auxiliary battery terminal disconnected 200 Ω or higher Ω
      C2-11(CNH1) - C58-4 (CG) Negative (-) auxiliary battery terminal disconnected 200 Ω or higher Ω
      C2-12(CNL1) - C58-4 (CG) Negative (-) auxiliary battery terminal disconnected 200 Ω or higher Ω
      C2-11(CNH1) - C58-16 (BAT) Negative (-) auxiliary battery terminal disconnected 6 kΩ or higher kΩ
      C2-12(CNL1) - C58-16 (BAT) Negative (-) auxiliary battery terminal disconnected 6 kΩ or higher kΩ

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR 

  7. CHECK CAN BUS WIRE (COMBINATION METER ASSEMBLY MAIN BUS) 

    Pre-procedure1

    • Disconnect the cable from the negative (-) auxiliary battery terminal.
    • Disconnect the C19 combination meter assembly connector.
    • Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition Result
      C19-32 (TX+) - C19-15 (TX-) Negative (-) auxiliary battery terminal disconnected 108 to 132 Ω Ω

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2022 - 10/2024]  , or refer to  REMOVAL [10/2024 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR 

  8. CHECK HARNESS OR CONNECTOR (MOBILE WIRELESS CHARGER CRADLE ASSEMBLY POWER SOURCE) 

    Pre-procedure1

    • Disconnect the C13 mobile wireless charger cradle assembly connector.
    • Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition Result
      C13-1 (PGND) - Body ground Always Below 1 Ω Ω
    • Measure the voltage according to the value(s) in the table below.
      STANDARD VOLTAGE

      Tester Connection Condition Specified Condition Result
      C13-4 (+B) - Body ground Always 11 to 14 V V
      C13-3 (ACC) - Body ground ACC ON 11 to 14 V V

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. CHECK CAN BUS WIRE (MOBILE WIRELESS CHARGER CRADLE ASSEMBLY SUB BUS) 

    Pre-procedure1

    • Disconnect the cable from the negative (-) auxiliary battery terminal.
    • Disconnect the C13 mobile wireless charger cradle assembly connector.
    • Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition Result
      C13-5 (CANH) - C13-6 (CANL) Negative (-) auxiliary battery terminal disconnected 54 to 69 Ω Ω

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE MOBILE WIRELESS CHARGER CRADLE ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR 

  10. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    • Disconnect the C2 radio and display receiver assembly connector.
    • Disconnect the C19 combination meter assembly connector.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      C2-11 (CNH1) - C19-32 (TX+) Always Below 1 Ω Ω
      C2-12 (CNL1) - C19-15 (TX-) Always Below 1 Ω Ω
      C2-11 (CNH1) or C19-32 (TX+) - Body ground Always 10 kΩ or higher kΩ
      C2-12 (CNL1) or C19-15 (TX-) - Body ground Always 10 kΩ or higher kΩ

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  11

  11. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Pre-procedure1

    • Disconnect the cable from the negative (-) auxiliary battery terminal.
    • Disconnect the C19 combination meter assembly connector.
    • Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition Result
      C19-32 (TX+) - C19-15 (TX-) Negative (-) auxiliary battery terminal disconnected 108 to 132 Ω Ω

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  12. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - MOBILE WIRELESS CHARGER CRADLE ASSEMBLY) 

    Pre-procedure1

    • Disconnect the cable from the negative (-) auxiliary battery terminal.
    • Disconnect the C13 mobile wireless charger cradle assembly connector.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      C13-5 (CANH) - C13-6 (CANL) Negative (-) auxiliary battery terminal disconnected 54 to 69 Ω Ω
      C13-5 (CANH) - C58-4 (CG) Negative (-) auxiliary battery terminal disconnected 200 Ω or higher Ω
      C13-6 (CANL) - C58-4 (CG) Negative (-) auxiliary battery terminal disconnected 200 Ω or higher Ω
      C13-5 (CANH) - C58-16 (BAT) Negative (-) auxiliary battery terminal disconnected 6 kΩ or higher kΩ
      C13-6 (CANL) - C58-16 (BAT) Negative (-) auxiliary battery terminal disconnected 6 kΩ or higher kΩ

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE MOBILE WIRELESS CHARGER CRADLE ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY MAIN BUS) 

    Pre-procedure1

    • Disconnect the cable from the negative (-) auxiliary battery terminal.
    • Disconnect the D2 radio and display receiver assembly connector.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      C2-11 (CNH1) - C2-12 (CNL1) Negative (-) auxiliary battery terminal disconnected Below 200 Ω Ω
      C2-11 (CNH1) - C58-4 (CG) Negative (-) auxiliary battery terminal disconnected Below 200 Ω Ω
      C2-12 (CNL1) - C58-4 (CG) Negative (-) auxiliary battery terminal disconnected Below 200 Ω Ω
      C2-11 (CNH1) - C58-16 (BAT) Negative (-) auxiliary battery terminal disconnected 6 kΩ or higher kΩ
      C2-12 (CNL1) - C58-16 (BAT) Negative (-) auxiliary battery terminal disconnected 6 kΩ or higher kΩ

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR 

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