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Home >> Toyota >> 2019 >> RAV4 XLE, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 51 (Can Communication System (HV) - Circuit Tests (6 Of 6)) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Check Bus 5 Lines for Short Circuit [10/2022 - 10/2023] >> Procedure

Check Bus 5 Lines for Short Circuit [10/2022 - 10/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the No. 1 CAN junction connector.
      GTY913804Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 7 CAN Junction Connector
      *c to Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) *d to No. 5 CAN Junction Connector
      *e to Main Body ECU (Multiplex Network Body ECU) *f to Air Conditioning Amplifier Assembly
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      G96-1 (CANH) - G96-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 7 CAN junction connector
      G96-2 (CANH) - G96-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Certification ECU (smart key ECU assembly)*
      G96-3 (CANH) - G96-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 5 CAN junction connector
      G96-4 (CANH) - G96-15 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Main body ECU (multiplex network body ECU)
      G96-5 (CANH) - G96-16 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Air conditioning amplifier assembly

      *: w/ Smart Key System

      Result

      Result Proceed to
      OK A
      NG (No. 5 CAN junction connector CAN main wire) B
      NG (No. 7 CAN junction connector CAN main wire) C
      NG (Wire to ECU or sensor) D

    Result: 

    A 

    REPLACE NO. 1 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  4

    Result: 

    D 

    See step  6

    Result: 

    B 

    See step  2

  2. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 CAN JUNCTION CONNECTOR) 
    1. Reconnect the G96 No. 1 CAN junction connector.
    2. Disconnect the No. 5 CAN junction connector.
      GTY1114357Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 5 CAN Junction Connector)      		 *b to No. 1 CAN Junction Connector
      *c to Central Gateway ECU (Network Gateway ECU) - -
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      G105-9 (CANH) - G105-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 1 CAN junction connector
      G105-11 (CANH) - G105-22 (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 (Central gateway ECU [network gateway ECU] CAN main wire) B
      NG (No. 1 CAN junction connector CAN main wire) C
      NG (Wire to ECU or sensor) D

    Result: 

    A 

    REPLACE NO. 5 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) 

    Result: 

    D 

    See step  6

    Result: 

    B 

    See step  3

  3. CHECK FOR SHORT IN CAN BUS WIRES (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 5 CAN JUNCTION CONNECTOR) 
    1. Reconnect the G105 No. 5 CAN junction connector.
    2. Disconnect the central gateway ECU (network gateway ECU) connector.
      GTY900938Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU [Network Gateway ECU])
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G72-15 (CA5H) - G72-16 (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 [10/2022 - 10/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 5 CAN JUNCTION CONNECTOR) 

  4. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Reconnect the G96 No. 1 CAN junction connector.
    2. Disconnect the No. 7 CAN junction connector.
      GTY1118581Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 CAN Junction Connector)      		 *b to No. 1 CAN Junction Connector
      *c to Combination Meter Assembly *d to Multiplex Network Door ECU (w/ Power Back Door System)
      *e to Position Control ECU Assembly (w/ Memory) - -
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      N52-1 (CANH) - N52-7 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 1 CAN junction connector
      N52-2 (CANH) - N52-8 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Combination meter assembly
      N52-3 (CANH) - N52-9 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Multiplex network door ECU*1
      N52-4 (CANH) - N52-10 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Position control ECU assembly*2

      *1: w/ Power Back Door System

      *2: w/ Memory

      Result

      Result Proceed to
      OK A
      NG (Combination meter assembly CAN main wire) B
      NG (No. 1 CAN junction connector CAN main wire) C
      NG (Wire to ECU or sensor) D

    Result: 

    A 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) 

    Result: 

    D 

    See step  6

    Result: 

    B 

    See step  5

  5. CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER ASSEMBLY - NO. 1 CAN JUNCTION CONNECTOR) 
    1. Reconnect the N52 No. 7 CAN junction connector.
    2. Disconnect the combination meter assembly connector.

      for 7 Inch Multi-information Display Type 

      GTY856828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)

      for 12.3 Inch Multi-information Display Type 

      GTY1113171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      FOR 7 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      G18-9 (CANH) - G18-25 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      FOR 12.3 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      G140-31 (CANH) - G140-14 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [10/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (COMBINATION METER ASSEMBLY - NO. 7 CAN JUNCTION CONNECTOR) 

  6. CHECK FOR SHORT IN CAN BUS WIRES (ECU, SENSOR) 
    1. Reconnect all wire harness connectors.
    2. Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the short circuited branch wire is connected.

      Refer to TERMINALS OF ECU [10/2022 - 10/2023]

    3. Measure the resistance according to the value(s) in the table below.
      GTY905512Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU [Network Gateway ECU])

      Standard Resistance

      Tester Connection Condition Specified Condition
      G72-15 (CA5H) - G72-16 (CA5L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

      HINT: 

      • If the resistance becomes normal (between 54 and 69 Ω) when the connector is disconnected from the ECU or sensor, there may be a short in the ECU or sensor.
      • If the resistance does not become normal when the connector is disconnected from the ECU or sensor, check for a short in the wire harness and repair or replace the wire harness or connector if necessary.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECU OR SENSOR 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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