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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (W/ Central Gateway Ecu) - Circuit Tests - (Hybrid) >> CAN COMMUNICATION SYSTEM (w/ Central Gateway ECU) >> Circuit Tests >> Check Bus 5 Lines for Short Circuit [10/2015 - ] >> Procedure

Check Bus 5 Lines for Short Circuit [10/2015 - ]: Procedure

  1. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      for Models with Blind Spot Monitor System or Parking Assist Monitor System A
      for Models without Blind Spot Monitor System and Parking Assist Monitor System B

    Result: 

    B 

    See step  8

    Result: 

    A 

    See step  2

  2. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the D132 No. 7 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY551326Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 CAN Junction Connector)
      *b to No. 5 CAN Junction Connector
      *c to Millimeter Wave Radar Sensor Assembly
      *d to Forward Recognition Camera
      *e to Driving Support ECU Assembly
      *f to Central Gateway ECU

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      D132-1 (CANH) - D132-11 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 5 CAN junction connector
      D132-2 (CANH) - D132-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Millimeter wave radar sensor assembly*
      D132-3 (CANH) - D132-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Forward recognition camera*
      D132-8 (CANH) - D132-18 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Driving support ECU assembly*
      D132-10 (CANH) - D132-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Central gateway ECU
      • *: w/ Toyota Safety Sense

      Result

      Result Proceed to
      OK A
      NG (Central gateway ECU main lines) B
      NG (No. 5 CAN junction connector main lines) C
      NG (ECU or sensor branch lines) D

    Result: 

    A 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  4

    Result: 

    D 

    See step  7

    Result: 

    B 

    See step  3

  3. CHECK FOR SHORT IN CAN BUS LINES (CENTRAL GATEWAY ECU) 
    1. Reconnect the D132 No. 7 CAN junction connector.
    2. Disconnect the D129 central gateway ECU connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY599296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D129-15 (CA5H) - D129-16 (CA5L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU. Refer to  REMOVAL [10/2015 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU - NO. 7 CAN JUNCTION CONNECTOR) 

  4. CHECK FOR SHORT IN CAN BUS LINES (NO. 5 CAN JUNCTION CONNECTOR) 
    1. Reconnect the D132 No. 7 CAN junction connector.
    2. Disconnect the O21 No. 5 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY551328Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 5 CAN Junction Connector)
      *b to Rear Television Camera Assembly
      *c to Hybrid Vehicle Control ECU Assembly
      *d to Blind Spot Monitor Sensor LH
      *e to No. 7 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      O21-7 (CANH) - O21-17 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Rear television camera assembly*1
      O21-8 (CANH) - O21-18 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Hybrid vehicle control ECU assembly
      O21-9 (CANH) - O21-19 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Blind spot monitor sensor LH*2
      O21-10 (CANH) - O21-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 7 CAN junction connector
      • *1: w/ Parking Assist Monitor System
      • *2: w/ Blind Spot Monitor System

      Result

      Result Proceed to
      OK A
      NG (Hybrid vehicle control ECU assembly main lines) B
      NG (No. 7 CAN junction connector main lines) C
      NG (ECU or sensor branch lines) D

    Result: 

    A 

    REPLACE NO. 5 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 

    Result: 

    D 

    See step  6

    Result: 

    B 

    See step  5

  5. CHECK FOR SHORT IN CAN BUS LINES (HYBRID VEHICLE CONTROL ECU ASSEMBLY) 
    1. Reconnect the O21 No. 5 CAN junction connector.
    2. Disconnect the D135 hybrid vehicle control ECU assembly connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY561709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D135-34 (CA2H) -D135-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [10/2015 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - NO. 5 CAN JUNCTION CONNECTOR) 

  6. CHECK FOR SHORT IN CAN BUS LINES (ECU, SENSOR) 
    1. Reconnect the O21 No. 5 CAN junction connector.
    2. Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the short circuited branch line is connected.

      Refer to TERMINALS OF ECU [10/2015 - ]

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D129-15 (CA5H) - D129-16 (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.

      GTY572035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CORRESPONDING ECU OR SENSOR 

    Result: 

    NG 

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BRANCH LINES OR CONNECTOR 

  7. CHECK FOR SHORT IN CAN BUS LINES (ECU, SENSOR) 
    1. Reconnect the D132 No. 7 CAN junction connector.
    2. Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the short circuited branch line is connected.

      Refer to TERMINALS OF ECU [10/2015 - ]

    3. Measure the resistance according to the value(s) in the table below.
      GTY572035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D129-15 (CA5H) - D129-16 (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.

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CORRESPONDING ECU OR SENSOR 

    Result: 

    NG 

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BRANCH LINES OR CONNECTOR 

  8. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the D132 No. 7 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY551327Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 CAN Junction Connector)
      *b to Millimeter Wave Radar Sensor Assembly
      *c to Forward Recognition Camera
      *d to Driving Support ECU Assembly
      *e to Hybrid Vehicle Control ECU Assembly
      *f to Central Gateway ECU

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      D132-2 (CANH) - D132-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Millimeter wave radar sensor assembly*
      D132-3 (CANH) - D132-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Forward recognition camera*
      D132-8 (CANH) - D132-18 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Driving support ECU assembly*
      D132-9 (CANH) - D132-19 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Hybrid vehicle control ECU assembly connector
      D132-10 (CANH) - D132-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Central gateway ECU
      • *: w/ Toyota Safety Sense

      Result

      Result Proceed to
      OK A
      NG (Central gateway ECU main lines) B
      NG (Hybrid vehicle control ECU assembly main lines) C
      NG (ECU or sensor branch lines) D

    Result: 

    A 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  10

    Result: 

    D 

    See step  11

    Result: 

    B 

    See step  9

  9. CHECK FOR SHORT IN CAN BUS LINES (CENTRAL GATEWAY ECU) 
    1. Reconnect the D132 No. 7 CAN junction connector.
    2. Disconnect the D129 central gateway ECU connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY599296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D129-15 (CA5H) - D129-16 (CA5L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU. Refer to  REMOVAL [10/2015 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU - NO. 7 CAN JUNCTION CONNECTOR) 

  10. CHECK FOR SHORT IN CAN BUS LINES (HYBRID VEHICLE CONTROL ECU ASSEMBLY) 
    1. Reconnect the D132 No. 7 CAN junction connector.
    2. Disconnect the D135 hybrid vehicle control ECU assembly connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY561709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D135-34 (CA2H) -D135-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [10/2015 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - NO. 7 CAN JUNCTION CONNECTOR) 

  11. CHECK FOR SHORT IN CAN BUS LINES (ECU, SENSOR) 
    1. Reconnect the D132 No. 7 CAN junction connector.
    2. Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the short circuited branch line is connected.

      Refer to TERMINALS OF ECU [10/2015 - ]

    3. Measure the resistance according to the value(s) in the table below.
      GTY572035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D129-15 (CA5H) - D129-16 (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.

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CORRESPONDING ECU OR SENSOR 

    Result: 

    NG 

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BRANCH LINES OR CONNECTOR 

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