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Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio / Video System - Diagnostic Codes (1 Of 3) >> Audio And Visual System >> DTC B1323: Lost Communication with Haptic Device; DTC B1324: Lost Communication with Meter; DTC B1325: Lost Communication with HUD; DTC B1326: Lost Communication with Clock Device (Local-CAN) [12/2017 - 10/2020] >> Procedure

DTC B1323: Lost Communication with Haptic Device; DTC B1324: Lost Communication with Meter; DTC B1325: Lost Communication with HUD; DTC B1326: Lost Communication with Clock Device (Local-CAN) [12/2017 - 10/2020]: Procedure

  1. CHECK DTC 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [12/2017 - 10/2020]

      Body Electrical > Navigation System > Trouble Codes 

      Result

      Result Proceed to
      DTCs B1323, B1324, B1325* and B1326 are output A
      DTC B1323 is output B
      DTC B1324 is output C
      DTCs B1325 is output* D
      DTC B1326 is output E

      *: w/ Headup Display

    Result: 

    B 

    See step  3

    Result: 

    C 

    See step  16

    Result: 

    D 

    See step  22

    Result: 

    E 

    See step  24

    Result: 

    A 

    See step  2

  2. CHECK LOCAL BUS 
    1. Disconnect the cable from the negative (-) battery terminal.
      GTY808966Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (No. 3 CAN Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G121-5 - G121-16 Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Result Proceed to
      OK A
      NG (Below 54 Ω) B
      NG (70 Ω or higher) C

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020] 

    Result: 

    B 

    See step  5

    Result: 

    C 

    See step  18

  3. CHECK HARNESS AND CONNECTOR (REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH] POWER SOURCE) 
    1. Disconnect the G76 remote operation controller assembly (remote touch) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G76-10 (GND) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      G76-1 (+B) - Body ground Always 11 to 14 V
      G76-6 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH] - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the G76 remote operation controller assembly (remote touch) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G76-9 (MO+) - G76-8 (MO-) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REMOTE OPERATION CONTROLLER ASSEMBLY (REMOTE TOUCH). Refer to  REMOVAL [12/2017 - 10/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. CHECK HARNESS AND CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - RADIO RECEIVER ASSEMBLY) 
    1. Disconnect the No. 3 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY808903Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (No. 3 CAN Junction Connector)

      Standard Resistance

      Tester Connection Condition Specified Condition
      G121-5 - G121-16 Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  11

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH]) 
    1. Disconnect the No. 3 CAN junction connector.
      GTY834686Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (No. 3 CAN Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G121-3 - G121-14 Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY) 
    1. Disconnect the No. 3 CAN junction connector.
      GTY808968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (No. 3 CAN Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G121-1 - G121-12 Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  13

    Result: 

    OK 

    See step  8

  8. CHECK VEHICLE TYPE 
    1. Check the vehicle type.

      Result

      Result Proceed to
      w/ Headup Display A
      w/o Headup Display B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - METER MIRROR SUB-ASSEMBLY) 
    1. Disconnect the No. 3 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY808970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (No. 3 CAN Junction Connector)

      Standard Resistance

      Tester Connection Condition Specified Condition
      G121-4 - G121-15 Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  14

    Result: 

    OK 

    See step  10

  10. CHECK HARNESS AND CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - CLOCK ASSEMBLY) 
    1. Disconnect the No. 3 CAN junction connector.
      GTY808907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (No. 3 CAN Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G121-2 - G121-13 Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 3 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  15

  11. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G54 radio receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G54-5 (CNH1) - G54-6 (CNL1) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [12/2017 - 10/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  12. CHECK HARNESS AND CONNECTOR (REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH] - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G76 remote operation controller assembly (remote touch) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G76-9 (MO+) - G76-8 (MO-) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REMOTE OPERATION CONTROLLER ASSEMBLY (REMOTE TOUCH). Refer to  REMOVAL [12/2017 - 10/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  13. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G34 combination meter assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G34-8 (TX+) - G34-7 (TX-) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2017 - 10/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  14. CHECK HARNESS AND CONNECTOR (METER MIRROR SUB-ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G88 meter mirror sub-assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G88-14 (TX+) - G88-15 (TX-) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  15. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G75 clock assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G75-5 (TX+1) - G75-6 (TX-1) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CLOCK ASSEMBLY. Refer to  REMOVAL [12/2017 - 10/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  16. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY POWER SOURCE) 
    1. Disconnect the G34 combination meter assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G34-31 (ES) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      G34-22 (B) - Body ground Always 11 to 14 V
      G34-21 (IG+) - Body ground Engine switch on (IG) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  17

  17. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the G34 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G34-8 (TX+) - G34-7 (TX-) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2017 - 10/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  18. CHECK HARNESS AND CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - RADIO RECEIVER ASSEMBLY) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the No. 3 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY808908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (No. 3 CAN Junction Connector)

      Standard Resistance

      Tester Connection Condition Specified Condition
      G121-5 - G121-16 Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  20

    Result: 

    OK 

    See step  19

  19. CHECK HARNESS AND CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH]) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the No. 3 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY808908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (No. 3 CAN Junction Connector)0

      Standard Resistance

      Tester Connection Condition Specified Condition
      G121-3 - G121-14 Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 3 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  21

  20. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G54 radio receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G54-5 (CNH1) - G54-6 (CNL1) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [12/2017 - 10/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  21. CHECK HARNESS AND CONNECTOR (REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH] - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G76 remote operation controller assembly (remote touch) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G76-9 (MO+) - G76-8 (MO-) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REMOTE OPERATION CONTROLLER ASSEMBLY (REMOTE TOUCH). Refer to  REMOVAL [12/2017 - 10/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  22. CHECK HARNESS AND CONNECTOR (METER MIRROR SUB-ASSEMBLY POWER SOURCE) 
    1. Disconnect the G88 meter mirror sub-assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G88-4 (ES) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      G88-2 (B) - Body ground Always 11 to 14 V
      G88-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  23

  23. CHECK HARNESS AND CONNECTOR (METER MIRROR SUB-ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the G88 meter mirror sub-assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G88-14 (TX+) - G88-15 (TX-) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  24. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY POWER SOURCE) 
    1. Disconnect the G75 clock assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G75-7 (E) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      G75-1 (B) - Body ground Always 11 to 14 V
      G75-2 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  25

  25. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the G75 clock assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G75-5 (TX+1) - G75-6 (TX-1) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CLOCK ASSEMBLY. Refer to  REMOVAL [12/2017 - 10/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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