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Home >> Lexus >> 2019 >> NX 300h >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System - Diagnostic Codes (2 Of 2) & Circuit Tests (1 Of 3) >> Can Communication System >> DTC U1002: Lost Communication with Gateway Module [10/2014 - 09/2017] >> Procedure

DTC U1002: Lost Communication with Gateway Module [10/2014 - 09/2017]: Procedure

  1. CHECK SUB BUS 11 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
      GTY508460Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (to Hybrid Vehicle Control ECU)      		 *b Front view of DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Resistance: Malfunction
      I115-34 (CA2H) - I115-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Below 53 Ω: Short in CAN bus wire
      I115-34 (CA2H) - I115-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Higher than 70 Ω: Open in CAN main wire
      I115-34 (CA2H) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ: +B short
      I115-35 (CA2L) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ: +B short
      I115-34 (CA2H) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω: Ground short
      I115-35 (CA2L) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω: Ground short

      Result

      Result Proceed to
      OK A
      NG
      - Open in CAN main wire      		 B
      NG
      - Short in CAN bus wire      		 C
      NG
      - +B short
      - Ground short      		 D

    Result: 

    B 

    See step  3

    Result: 

    C 

    See step  10

    Result: 

    D 

    See step  26

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BATTERY AND BODY GROUND) 
    1. Reconnect the cable to the negative (-) auxiliary battery terminal.
      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

      Refer to INITIALIZATION [10/2014 - 09/2017]

      GTY515275Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)      		 - -
    2. Disconnect the hybrid vehicle control ECU connectors.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      I116-3 (BATT) - Body ground Power switch off 11 to 14 V
      A60-1 (+B2) - Body ground Auxiliary battery voltage applied to terminal A61-6 (MREL) 11 to 14 V
      A61-4 (+B1) - Body ground Auxiliary battery voltage applied to terminal A61-6 (MREL) 11 to 14 V
      A60-3 (IG2) - Body ground Power switch on (IG) 11 to 14 V
      A60-22 (ACCI) - Body ground Power switch on (ACC) 11 to 14 V
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I115-6 (E1) - Body ground Always Below 1 Ω
      I115-5 (E01) - Body ground Always Below 1 Ω
      I116-4 (E12) - Body ground Always Below 1 Ω
      I116-5 (E02) - Body ground Always Below 1 Ω

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  3. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 4 CAN junction connector.
      GTY508492Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 4 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU
      *c to No. 7 CAN Junction Connector - -
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I95-4 (CANH) - I95-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      I95-10 (CANH) - I95-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result Proceed to
      OK A
      NG (to hybrid vehicle control ECU CAN main wire) B
      NG (to No. 7 CAN junction connector CAN main wire) C

    Result: 

    A 

    REPLACE NO. 4 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  6

    Result: 

    B 

    See step  4

  4. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CHECK FOR OPEN IN CAN BUS MAIN WIRE (HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the hybrid vehicle control ECU connector.
      GTY504922Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I115-34 (CA2H) - I115-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 4 CAN JUNCTION CONNECTOR) 

  6. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 7 CAN junction connector.
      GTY508496Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 CAN Junction Connector)      		 *b to No. 1 CAN Junction Terminal
      *c to No. 4 CAN Junction Connector - -
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q32-4 (CANH) - Q32-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      Q32-5 (CANH) - Q32-15 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result Proceed to
      OK A
      NG (to No. 1 CAN junction terminal CAN main wire) B
      NG (to No. 4 CAN junction connector CAN main wire) C

    Result: 

    A 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - NO. 4 CAN JUNCTION CONNECTOR) 

    Result: 

    B 

    See step  8

  8. CONNECT CONNECTOR 
    1. Reconnect the No. 7 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  9

  9. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 CAN JUNCTION TERMINAL) 
    1. Disconnect the No. 1 CAN junction terminal connector.
      GTY520928Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to No. 1 CAN Junction Terminal)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q33-3 (CANH) - Q33-2 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 CAN JUNCTION TERMINAL 

    Result: 

    NG 

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

  10. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the Q32 No. 7 CAN junction connector.
      GTY521161Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (to Hybrid Vehicle Control ECU)      		 - -
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I115-34 (CA2H) - I115-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  16

    Result: 

    OK 

    See step  11

  11. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY508469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 CAN Junction Connector)      		 *b to Blind Spot Monitor Sensor LH (w/ Blind Spot Monitor System)
      *c to No. 1 CAN Junction Terminal - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q32-3 (CANH) - Q32-13 (CANL)* Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      Q32-4 (CANH) - Q32-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      () *: w/ Blind Spot Monitor System

      Result

      Result Proceed to
      OK A
      NG (to blind spot monitor sensor LH CAN branch wire) (w/ Blind Spot Monitor System) B
      NG (to No. 1 CAN junction terminal CAN main wire) C

    Result: 

    A 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  14

    Result: 

    B 

    See step  12

  12. CONNECT CONNECTOR 
    1. Reconnect the No. 7 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  13

  13. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH) 
    1. Disconnect the blind spot monitor sensor LH connector.
      GTY499914Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Blind Spot Monitor Sensor LH)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      V1-2 (CA1P) - V1-7 (CA1N) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to  REMOVAL [10/2014 - 09/2017] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO BLIND SPOT MONITOR SENSOR LH (CA1P, CA1N) 

  14. CONNECT CONNECTOR 
    1. Reconnect the No. 7 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  15

  15. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION TERMINAL) 
    1. Disconnect the No. 1 CAN junction terminal connector.
      GTY520928Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to No. 1 CAN Junction Terminal)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q33-3 (CANH) - Q33-2 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 CAN JUNCTION TERMINAL 

    Result: 

    NG 

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

  16. CONNECT CONNECTOR 
    1. Reconnect the No. 7 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  17

  17. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 4 CAN junction connector.
      GTY508470Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 4 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU
      *c to Clearance Warning ECU Assembly (w/ Intuitive Parking Assist System) *d to Driving Support ECU Assembly (w/ Pre-collision System)
      *e to Lane Departure Warning Camera (w/ Lane Departure Alert System) *f to No. 7 CAN Junction Connector
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I95-4 (CANH) - I95-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      I95-6 (CANH) - I95-16 (CANL)*1 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-7 (CANH) - I95-17 (CANL)*2 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-8 (CANH) - I95-18 (CANL)*3 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-10 (CANH) - I95-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      () *1: w/ Intuitive Parking Assist System*2: w/ Pre-collision System*3: w/ Lane Departure Alert System

      Result

      Result Proceed to
      OK A
      NG (to hybrid vehicle control ECU CAN main wire) B
      NG (to clearance warning ECU assembly CAN branch wire) (w/ Intuitive Parking Assist System) C
      NG (to driving support ECU assembly CAN branch wire) (w/ Pre-collision System) D
      NG (to lane departure warning camera CAN branch wire) (w/ Lane Departure Alert System) E
      NG (to No. 8 CAN junction connector CAN main wire) F

    Result: 

    A 

    REPLACE NO. 4 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  20

    Result: 

    D 

    See step  22

    Result: 

    E 

    See step  24

    Result: 

    F 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - NO. 8 CAN JUNCTION CONNECTOR) 

    Result: 

    B 

    See step  18

  18. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  19

  19. CHECK FOR SHORT IN CAN BUS WIRES (HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the hybrid vehicle control ECU connector.
      GTY506339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I115-34 (CA2H) - I115-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO HYBRID VEHICLE CONTROL ECU (CA2H, CA2L) 

  20. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  21

  21. CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY) 
    1. Disconnect the clearance warning ECU assembly connector.
      GTY515433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Clearance Warning ECU Assembly)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I20-17 (R1) - I20-18 (R2) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU ASSEMBLY (R1, R2) 

  22. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  23

  23. CHECK FOR SHORT IN CAN BUS WIRES (DRIVING SUPPORT ECU ASSEMBLY) 
    1. Disconnect the driving support ECU assembly connector.
      GTY509795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Driving Support ECU Assembly)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I19-39 (CA2H) - I19-17 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to  REMOVAL [10/2014 - 09/2017] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU ASSEMBLY (CA2H, CA2L) 

  24. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  25

  25. CHECK FOR SHORT IN CAN BUS WIRES (LANE DEPARTURE WARNING CAMERA) 
    1. Disconnect the lane departure warning camera connector.
      GTY508421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Lane Departure Warning Camera)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T10-6 (CA1P) - T10-12 (CA1N) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE LANE DEPARTURE WARNING CAMERA. Refer to  REMOVAL [10/2014 - 09/2017] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO LANE DEPARTURE WARNING CAMERA (CA1P, CA1N) 

  26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the Q32 No. 7 CAN junction connector.
      GTY519908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (to Hybrid Vehicle Control ECU)      		 *b Front view of DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I115-34 (CA2H) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I115-35 (CA2L) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I115-34 (CA2H) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I115-35 (CA2L) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  32

    Result: 

    OK 

    See step  27

  27. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY505921Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 CAN Junction Connector)      		 *b Front view of DLC3
      *c to Blind Spot Monitor Sensor LH (w/ Blind Spot Monitor System) *d to No. 1 CAN Junction Terminal

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q32-3 (CANH) - I7-4 (CG)* Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      Q32-13 (CANL) - I7-4 (CG)* Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      Q32-3 (CANH) - I7-16 (BAT)* Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      Q32-13 (CANL) - I7-16 (BAT)* Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      Q32-4 (CANH) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      Q32-14 (CANL) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      Q32-4 (CANH) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      Q32-14 (CANL) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      () *: w/ Blind Spot Monitor System

      Result

      Result Proceed to
      OK A
      NG (to blind spot monitor sensor LH CAN branch wire) (w/ Blind Spot Monitor System) B
      NG (to No. 1 CAN junction terminal CAN main wire) C

    Result: 

    A 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  30

    Result: 

    B 

    See step  28

  28. CONNECT CONNECTOR 
    1. Reconnect the No. 7 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  29

  29. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH) 
    1. Disconnect the blind spot monitor sensor LH connector.
      GTY513697Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Blind Spot Monitor Sensor LH)
      *b Front view of DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      V1-2 (CA1P) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      V1-7 (CA1N) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      V1-2 (CA1P) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      V1-7 (CA1N) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to  REMOVAL [10/2014 - 09/2017] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO BLIND SPOT MONITOR SENSOR LH (CA1P, CA1N) 

  30. CONNECT CONNECTOR 
    1. Reconnect the No. 7 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  31

  31. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION TERMINAL) 
    1. Disconnect the No. 1 CAN junction terminal connector.
      GTY502875Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to No. 1 CAN Junction Terminal)
      *b Front view of DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q33-3 (CANH) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      Q33-2 (CANL) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      Q33-3 (CANH) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      Q33-2 (CANL) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 CAN JUNCTION TERMINAL 

    Result: 

    NG 

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

  32. CONNECT CONNECTOR 
    1. Reconnect the No. 7 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  33

  33. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 4 CAN junction connector.
      GTY519347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 4 CAN Junction Connector)      		 *b Front view of DLC3
      *c to Hybrid Vehicle Control ECU *d to Clearance Warning ECU Assembly (w/ Intuitive Parking Assist System)
      *e to Driving Support ECU Assembly (w/ Pre-collision System) *f to Lane Departure Warning Camera (w/ Lane Departure Alert System)
      *g to No. 7 CAN Junction Connector - -
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I95-4 (CANH) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-14 (CANL) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-4 (CANH) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-14 (CANL) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-6 (CANH) - I7-4 (CG)*1 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-16 (CANL) - I7-4 (CG)*1 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-6 (CANH) - I7-16 (BAT)*1 Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-16 (CANL) - I7-16 (BAT)*1 Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-7 (CANH) - I7-4 (CG)*2 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-17 (CANL) - I7-4 (CG)*2 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-7 (CANH) - I7-16 (BAT)*2 Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-17 (CANL) - I7-16 (BAT)*2 Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-8 (CANH) - I7-4 (CG)*3 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-18 (CANL) - I7-4 (CG)*3 Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-8 (CANH) - I7-16 (BAT)*3 Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-18 (CANL) - I7-16 (BAT)*3 Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-10 (CANH) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-20 (CANL) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I95-10 (CANH) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I95-20 (CANL) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      () *1: w/ Intuitive Parking Assist System*2: w/ Pre-collision System*3: w/ Lane Departure Alert System

      Result

      Result Proceed to
      OK A
      NG (to hybrid vehicle control ECU CAN main wire) B
      NG (to clearance warning ECU assembly CAN branch wire) (w/ Intuitive Parking Assist System) C
      NG (to driving support ECU assembly CAN branch wire) (w/ Pre-collision System) D
      NG (to lane departure warning camera CAN branch wire) (w/ Lane Departure Alert System) E
      NG (to No. 7 CAN junction connector CAN main wire) F

    Result: 

    A 

    REPLACE NO. 4 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  36

    Result: 

    D 

    See step  38

    Result: 

    E 

    See step  40

    Result: 

    F 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 

    Result: 

    B 

    See step  34

  34. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  35

  35. CHECK FOR SHORT IN CAN BUS WIRES (HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the hybrid vehicle control ECU connector.
      GTY513575Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU)
      *b Front view of DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I115-34 (CA2H) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I115-35 (CA2L) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I115-34 (CA2H) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I115-35 (CA2L) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO HYBRID VEHICLE CONTROL ECU (CA2H, CA2L) 

  36. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  37

  37. CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY) 
    1. Disconnect the clearance warning ECU assembly connector.
      GTY520437Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Clearance Warning ECU Assembly)
      *b Front view of DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I20-17 (R1) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I20-18 (R2) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I20-17 (R1) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I20-18 (R2) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU ASSEMBLY (R1, R2) 

  38. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  39

  39. CHECK FOR SHORT IN CAN BUS WIRES (DRIVING SUPPORT ECU ASSEMBLY) 
    1. Disconnect the driving support ECU assembly connector.
      GTY510857Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Driving Support ECU Assembly)
      *b Front view of DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I19-39 (CA2H) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I19-17 (CA2L) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I19-39 (CA2H) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I19-17 (CA2L) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to  REMOVAL [10/2014 - 09/2017] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU ASSEMBLY (CA2H, CA2L) 

  40. CONNECT CONNECTOR 
    1. Reconnect the No. 4 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  41

  41. CHECK FOR SHORT IN CAN BUS WIRES (LANE DEPARTURE WARNING CAMERA) 
    1. Disconnect the lane departure warning camera connector.
      GTY515308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Lane Departure Warning Camera)
      *b Front view of DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T10-6 (CA1P) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      T10-12 (CA1N) - I7-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      T10-6 (CA1P) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      T10-12 (CA1N) - I7-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE LANE DEPARTURE WARNING CAMERA. Refer to  REMOVAL [10/2014 - 09/2017] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO LANE DEPARTURE WARNING CAMERA (CA1P, CA1N) 

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