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Home >> Lexus >> 2017 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Intelligent Clearance Sonar System (Diagnostic Codes) >> Intelligent Clearance Sonar System >> DTC U0232: Lost Communication with Blind Spot Monitor Slave Module; DTC U0233: Lost Communication with Blind Spot Monitor Master Module [08/2016 - 08/2019] >> Procedure
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DTC U0232: Lost Communication with Blind Spot Monitor Slave Module; DTC U0233: Lost Communication with Blind Spot Monitor Master Module [08/2016 - 08/2019]: Procedure

  1. CHECK DTC 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

      Result

      Result Proceed to
      DTC U0232 is only output A
      DTC U0233 is only output B
      DTC U0232 and U0233 are output C

    Result: 

    B 

    See step  5

    Result: 

    C 

    See step  8

    Result: 

    A 

    See step  2

  2. CHECK CAN BUS MAIN WIRE 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the W2 blind spot monitor sensor RH connector.
    3. Measure the resistance according to the value (s) in the table below.
      GTY657237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to blind spot monitor sensor RH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      W2-1 (CA2P) -W2-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - BODY GROUND) 

    Refer to PROCEDURE - Step 4

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH POWER SOURCE) 

    Refer to PROCEDURE - Step 3

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. CHECK CAN BUS MAIN WIRE 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the X2 blind spot monitor sensor LH connector.
    3. Measure the resistance according to the value (s) in the table below.
      GTY682353Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to blind spot monitor sensor LH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      X2-1 (CA2P) -X2-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 6 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH - BODY GROUND) 

    Refer to PROCEDURE - Step 2

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH POWER SOURCE) 

    Refer to PROCEDURE - Step 1

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. CHECK CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR RH) 
    1. Turn the power switch off.
    2. Disconnect the cable from the negative (-) auxiliary battery terminal.
    3. Measure the resistance according to the value (s) in the table below.
      GTY651436Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3
      *a Component with harness connected
      (No. 6 CAN Junction Connector)

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      J98-1 (CANH) -J98-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Below 54 Ω: Short circuit between bus lines
      70 Ω or more: Open circuit in main bus lines
      J98-1 (CANH) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω: CANH short to ground
      J98-12 (CANL) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω: CANL short to ground
      J98-1 (CANH) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ: CANH +B short
      J98-12 (CANL) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ: CANL +B short

      Result

      Result Proceed to
      OK A
      Open circuit in CAN main bus lines B
      Short circuit between bus lines C
      • Short to ground
      • +B short
      		 D

    Result: 

    B 

    See step  11

    Result: 

    C 

    See step  15

    Result: 

    D 

    See step  19

    Result: 

    A 

    See step  9

  9. CONFIRM CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY) 
    1. Disconnect the J38 clearance warning ECU assembly connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J38-37 (CANH) - J38-38 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      GTY674708Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to clearance warning ECU assembly)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - NO. 6 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  10

  10. CHECK DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs 

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

      Result

      Result Proceed to
      DTC U0232 and U0233 are output A
      DTC U0232 and U0233 are not output B

    Result: 

    A 

    REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    B 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - 12/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 03/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2018 - 08/2019] 

  11. CHECK FOR OPEN IN CAN BUS WIRE (NO. 6 CAN JUNCTION CONNECTOR) 
    1. Disconnect the J98 No. 6 CAN junction connector.
      GTY682407Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 6 CAN Junction Connector)
      *b to blind spot monitor sensor LH CAN main wire
      *c to blind spot monitor sensor RH CAN main wire
      *d to clearance warning ECU assembly CAN wire
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J98-3 (CANH) - J98-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      J98-1 (CANH) - J98-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      J98-2 (CANH) - J98-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Result Proceed to
      OK A
      NG (to blind spot monitor sensor LH CAN main wire) B
      NG (to blind spot monitor sensor RH CAN main wire) C
      NG (to clearance warning ECU assembly CAN wire) D

    Result: 

    A 

    REPLACE NO. 6 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  13

    Result: 

    D 

    See step  14

    Result: 

    B 

    See step  12

  12. CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR LH) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the X2 blind spot monitor sensor LH connector.
      GTY682353Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to blind spot monitor sensor LH)
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      X2-1 (CA2P) - X2-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 6 CAN JUNCTION CONNECTOR) 

  13. CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR RH) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the W2 blind spot monitor sensor RH connector.
      GTY657237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to blind spot monitor sensor RH)
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      W2-1 (CA2P) -W2-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR) 

  14. CHECK FOR OPEN IN CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the J38 clearance warning ECU connector.
      GTY674708Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to clearance warning ECU assembly)
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J38-37 (CANH) - J38-38 (CANL) 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 [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - NO. 6 CAN JUNCTION CONNECTOR) 

  15. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 CAN JUNCTION CONNECTOR) 
    1. Disconnect the J98 No. 6 CAN junction connector.
      GTY682407Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 6 CAN Junction Connector)
      *b to blind spot monitor sensor LH CAN main wire
      *c to blind spot monitor sensor RH CAN main wire
      *d to clearance warning ECU assembly CAN wire
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J98-3 (CANH) - J98-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      J98-1 (CANH) - J98-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      J98-2 (CANH) - J98-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Result Proceed to
      OK A
      NG (to blind spot monitor sensor LH CAN main wire) B
      NG (to blind spot monitor sensor RH CAN main wire) C
      NG (to clearance warning ECU assembly CAN wire) D

    Result: 

    A 

    REPLACE NO. 6 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  17

    Result: 

    D 

    See step  18

    Result: 

    B 

    See step  16

  16. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the X2 blind spot monitor sensor LH connector.
      GTY682353Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to blind spot monitor sensor LH)
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      X2-1 (CA2P) - X2-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 6 CAN JUNCTION CONNECTOR) 

  17. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the W2 blind spot monitor sensor RH connector.
      GTY657237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to blind spot monitor sensor RH)
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      W2-1 (CA2P) -W2-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR) 

  18. CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the J38 clearance warning ECU connector.
      GTY674708Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to clearance warning ECU assembly)
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J38-37 (CANH) - J38-38 (CANL) 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 [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - NO. 6 CAN JUNCTION CONNECTOR) 

  19. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 CAN JUNCTION CONNECTOR) 
    1. Disconnect the J98 No. 6 CAN junction connector.
    2. Measure the resistance according to the value (s) in the table below.
      GTY643617Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 6 CAN Junction Connector)      		 *b to blind spot monitor sensor LH CAN main wire
      *c to blind spot monitor sensor RH CAN main wire *d to clearance warning ECU assembly CAN wire

      Standard Resistance

      Tester Connection Condition Specified Condition
      J98-3 (CANH) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      J98-14 (CANL) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      J98-3 (CANH) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      J98-14 (CANL) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      J98-1 (CANH) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      J98-12 (CANL) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      J98-1 (CANH) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      J98-12 (CANL) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      J98-2 (CANH) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      J98-13 (CANL) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      J98-2 (CANH) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      J98-13 (CANL) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      Result

      Result Proceed to
      OK A
      NG (to blind spot monitor sensor LH CAN main wire) B
      NG (to blind spot monitor sensor RH CAN main wire) C
      NG (to clearance warning ECU assembly CAN wire) D

    Result: 

    A 

    REPLACE NO. 6 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  21

    Result: 

    D 

    See step  22

    Result: 

    B 

    See step  20

  20. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the X2 blind spot monitor sensor LH connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      X2-1 (CA2P) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      X2-6 (CA2N) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      X2-1 (CA2P) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      X2-6 (CA2N) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      GTY679255Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3
      *a Front view of wire harness connector
      (to blind spot monitor sensor LH)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 6 CAN JUNCTION CONNECTOR) 

  21. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the W2 blind spot monitor sensor RH connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      W2-1 (CA2P) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      W2-6 (CA2N) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      W2-1 (CA2P) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      W2-6 (CA2N) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      GTY643151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3
      *a Front view of wire harness connector
      (to blind spot monitor sensor RH)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR) 

  22. CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY) 
    1. Reconnect the J98 No. 6 CAN junction connector.
    2. Disconnect the J38 clearance warning ECU connector.
      GTY681039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3
      *a Front view of wire harness connector
      (to clearance warning ECU assembly)
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J38-37 (CANH) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      J38-38 (CANL) - J12-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      J38-37 (CANH) - J12-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      J38-38 (CANL) - J12-16 (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 [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - NO. 6 CAN JUNCTION CONNECTOR) 

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