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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (Can Communication System (Symptom Tests) (3 Of 3) (Hybrid)) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Open in Bus 5 Main Bus Line [10/2018 - ] >> Procedure

Open in Bus 5 Main Bus Line [10/2018 - ]: Procedure

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  1. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 6 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the No. 6 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY779900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 6 CAN Junction Connector)      		 *b to No. 1 CAN Junction Connector
      *c to Central Gateway ECU (Network Gateway ECU) - -

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      F93-1 (CANH) - F93-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 1 CAN junction connector
      F93-3 (CANH) - F93-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Central gateway ECU (network gateway ECU)

      Result

      Result Proceed to
      OK A
      NG (Line to central gateway ECU (network gateway ECU)) B
      NG (Line to No. 1 CAN junction connector) C

    Result: 

    A 

    REPLACE NO. 6 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  3

    Result: 

    B 

    See step  2

  2. CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 6 CAN JUNCTION CONNECTOR) 
    1. Reconnect the F93 No. 6 CAN junction connector.
    2. Disconnect the central gateway ECU (network gateway ECU) connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY809087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      F61-15 (CA5H) - F61-16 (CA5L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU). Refer to  REMOVAL [10/2018 - 07/2022]  , or refer to  REMOVAL [07/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 6 CAN JUNCTION CONNECTOR) 

  3. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR) 
    1. Reconnect the F93 No. 6 CAN junction connector.
    2. Disconnect the No. 1 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY786585Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 6 CAN Junction Connector
      *c to No. 9 CAN Junction Connector - -

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      F85-1 (CANH) - F85-11 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 6 CAN junction connector
      F85-7 (CANH) - F85-17 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 9 CAN junction connector

      Result

      Result Proceed to
      OK A
      NG (Line to No. 6 CAN junction connector) B
      NG (Line to No. 9 CAN junction connector) C

    Result: 

    A 

    REPLACE NO. 1 CAN JUNCTION CONNECTOR 

    Result: 

    B 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 6 CAN JUNCTION CONNECTOR) 

    Result: 

    C 

    See step  4

  4. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 9 CAN JUNCTION CONNECTOR) 
    1. Reconnect the F85 No. 1 CAN junction connector.
    2. Disconnect the No. 9 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY779173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 9 CAN Junction Connector)      		 *b to Combination Meter Assembly
      *c to No. 1 CAN Junction Connector - -

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      N112-2 (CANH) - N112-8 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Combination meter assembly
      N112-4 (CANH) - N112-10 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 1 CAN junction connector

      Result

      Result Proceed to
      OK A
      NG (Line to No. 1 CAN junction connector) B
      NG (Line to combination meter assembly) C

    Result: 

    A 

    REPLACE NO. 9 CAN JUNCTION CONNECTOR 

    Result: 

    B 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 9 CAN JUNCTION CONNECTOR) 

    Result: 

    C 

    See step  5

  5. CHECK FOR OPEN IN CAN MAIN BUS LINES (COMBINATION METER ASSEMBLY) 
    1. Reconnect the N112 No. 9 CAN junction connector.
    2. Disconnect the combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY789906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      F23-29 (CANH) - F23-30 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2018 - 07/2022]  , or refer to  REMOVAL [07/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (COMBINATION METER ASSEMBLY - NO. 9 CAN JUNCTION CONNECTOR) 

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