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Home >> Toyota >> 2021 >> Venza LE >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System - Circuit Tests (1 Of 4) & Diagnostic Codes >> Can Communication System >> DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1159-87: Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message; DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message [07/2020 - ] >> Procedure
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DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1159-87: Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message; DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message [07/2020 - ]: Procedure

  1. CHECK FOR OPEN IN CAN MAIN BUS LINES 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Measure the resistance according to the value(s) in the table below.
      GTY995670Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Hybrid Vehicle Control ECU)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A33-24 (CA3P) - A33-11 (CA3N) Cable disconnected from negative (-) auxiliary battery terminal Below 70 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  29

    Result: 

    OK 

    See step  2

  2. CHECK FOR SHORT IN CAN BUS LINES 
    1. Measure the resistance according to the value(s) in the table below.
      GTY995670Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Hybrid Vehicle Control ECU)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A33-24 (CA3P) - A33-11 (CA3N) Cable disconnected from negative (-) auxiliary battery terminal 54 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  21

    Result: 

    OK 

    See step  3

  3. CHECK FOR SHORT TO +B IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY995671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Hybrid Vehicle Control ECU)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A33-24 (CA3P) - A33-13 (BATT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      A33-11 (CA3N) - A33-13 (BATT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  13

    Result: 

    OK 

    See step  4

  4. CHECK FOR SHORT TO GND IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY995669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Hybrid Vehicle Control ECU)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A33-24 (CA3P) - A33-1 (E12) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      A33-11 (CA3N) - A33-1 (E12)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    INSPECT FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    NG 

    See step  5

  5. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the E103 No. 1 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-6 (CANH) - E58-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      E103-12 (CANL) - E58-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  6

  6. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY976485Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-4 (CANH) - E58-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      E103-10 (CANL) - E58-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  7

  7. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY976482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-5 (CANH) - E58-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      E103-11 (CANL) - E58-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  11

    Result: 

    OK 

    See step  8

  8. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY976484Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 2 Skid Control ECU (Brake Actuator Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-3 (CANH) - E58-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      E103-9 (CANL) - E58-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  12

  9. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the A33 hybrid vehicle control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-6 (CANH) - E58-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      E103-12 (CANL) - E58-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 

  10. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A26 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976485Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-4 (CANH) - E58-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      E103-10 (CANL) - E58-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - ECM) 

  11. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Disconnect the A45 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-5 (CANH) - E58-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      E103-11 (CANL) - E58-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 

  12. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Disconnect the A85 No. 2 skid control ECU (brake actuator assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976484Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 2 Skid Control ECU (Brake Actuator Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-3 (CANH) - E58-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      E103-9 (CANL) - E58-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 

  13. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the E103 No. 1 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY975835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-6 (CANH) - E58-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      E103-12 (CANL) - E58-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  17

    Result: 

    OK 

    See step  14

  14. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY976481Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-4 (CANH) - E58-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      E103-10 (CANL) - E58-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  18

    Result: 

    OK 

    See step  15

  15. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY976528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-5 (CANH) - E58-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      E103-11 (CANL) - E58-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  19

    Result: 

    OK 

    See step  16

  16. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY976480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 2 Skid Control ECU (Brake Actuator Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-3 (CANH) - E58-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      E103-9 (CANL) - E58-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  20

  17. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the A33 hybrid vehicle control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY975835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-6 (CANH) - E58-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      E103-12 (CANL) - E58-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 

  18. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A26 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976481Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-4 (CANH) - E58-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      E103-10 (CANL) - E58-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - ECM) 

  19. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Disconnect the A45 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-5 (CANH) - E58-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      E103-11 (CANL) - E58-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 

  20. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Disconnect the A85 No. 2 skid control ECU (brake actuator assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 2 Skid Control ECU (Brake Actuator Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-3 (CANH) - E58-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      E103-9 (CANL) - E58-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 

  21. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the E103 No. 1 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY977148Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-6 (CANH) - E103-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  25

    Result: 

    OK 

    See step  22

  22. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY977150Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-4 (CANH) - E103-10 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  26

    Result: 

    OK 

    See step  23

  23. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY975795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-5 (CANH) - E103-11 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  27

    Result: 

    OK 

    See step  24

  24. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY976187Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 2 Skid Control ECU (Brake Actuator Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-3 (CANH) - E103-9 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  28

  25. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the A33 hybrid vehicle control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY977148Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-6 (CANH) - E103-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 

  26. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A26 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY977150Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-4 (CANH) - E103-10 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - ECM) 

  27. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Disconnect the A45 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY975795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-5 (CANH) - E103-11 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 

  28. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Disconnect the A85 No. 2 skid control ECU (brake actuator assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY976187Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 2 Skid Control ECU (Brake Actuator Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-3 (CANH) - E103-9 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 

  29. CHECK FOR OPEN IN CAN MAIN BUS LINES (HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the A33 hybrid vehicle control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A33-24 (CA3P) - A33-11 (CA3N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      GTY976340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU)

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    See step  30

  30. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Reconnect the A33 hybrid vehicle control ECU connector.
    2. Disconnect the E103 No. 1 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY977148Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to Hybrid Vehicle Control ECU

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-6 (CANH) - E103-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 

    Result: 

    OK 

    See step  31

  31. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY975795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)      		 *b to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E103-5 (CANH) - E103-11 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  32

  32. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Reconnect the E103 No. 1 CAN junction connector.
    2. Disconnect the A45 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A45-35 (CA2H) - A45-36 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      GTY974712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly))

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - NO. 1 CAN JUNCTION CONNECTOR) 

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