LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2020 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Intuitive Parking Assist System (W/ Intelligent Clearance Sonar System) (Diagnostic Codes & Circuit Tests) >> INTUITIVE PARKING ASSIST SYSTEM (w/ Intelligent Clearance Sonar System) >> DTC C1AED: Rear Sensor Communication Malfunction [08/2019 - ] >> Procedure

DTC C1AED: Rear Sensor Communication Malfunction [08/2019 - ]: Procedure

  1. INITIALIZE REAR CORNER ULTRASONIC SENSOR AND REAR CENTER ULTRASONIC SENSOR 
    1. Initialize the rear corner ultrasonic sensor and rear center ultrasonic sensor.

      Refer to CALIBRATION [08/2019 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK DTC OUTPUT (C1AED) 
    1. Check for DTCs.

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

    2. Clear the DTCs.

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

    3. Recheck for DTCs.

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

      Result

      Result Proceed to
      DTC C1AED is output A
      No DTCs are output B

    Result: 

    B 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 07/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    A 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - REAR CORNER ULTRASONIC SENSOR RH) 
    1. Disconnect the J38 clearance warning ECU assembly connector.
    2. Disconnect the Y5 rear corner ultrasonic sensor RH connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J38-22 (BOR) - Y5-4 (BI) Always Below 1 Ω
      J38-24 (SOR) - Y5-5 (SI) Always Below 1 Ω
      J38-23 (E1) - Y5-6 (EI) Always Below 1 Ω
      J38-22 (BOR) or Y5-4 (BI) - Body ground Always 10 kΩ or higher
      J38-24 (SOR) or Y5-5 (SI) - Body ground Always 10 kΩ or higher
      J38-23 (E1) or Y5-6 (EI) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (REAR CORNER ULTRASONIC SENSOR RH - REAR CENTER ULTRASONIC SENSOR RH) 
    1. Disconnect the Y6 rear center ultrasonic sensor RH connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Y5-1 (BO) - Y6-4 (BI) Always Below 1 Ω
      Y5-2 (SO) - Y6-5 (SI) Always Below 1 Ω
      Y5-3 (EO) - Y6-6 (EI) Always Below 1 Ω
      Y5-1 (BO) or Y6-4 (BI) - Body ground Always 10 kΩ or higher
      Y5-2 (SO) or Y6-5 (SI) - Body ground Always 10 kΩ or higher
      Y5-3 (EO) or Y6-6 (EI) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (REAR CENTER ULTRASONIC SENSOR RH - REAR CENTER ULTRASONIC SENSOR LH) 
    1. Disconnect the Y7 rear center ultrasonic sensor LH connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Y6-1 (BO) - Y7-4 (BI) Always Below 1 Ω
      Y6-2 (SO) - Y7-5 (SI) Always Below 1 Ω
      Y6-3 (EO) - Y7-6 (EI) Always Below 1 Ω
      Y6-1 (BO) or Y7-4 (BI) - Body ground Always 10 kΩ or higher
      Y6-2 (SO) or Y7-5 (SI) - Body ground Always 10 kΩ or higher
      Y6-3 (EO) or Y7-6 (EI) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (REAR CENTER ULTRASONIC SENSOR LH - REAR CORNER ULTRASONIC SENSOR LH) 
    1. Disconnect the Y8 rear corner ultrasonic sensor LH connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Y7-1 (BO) - Y8-4 (BI) Always Below 1 Ω
      Y7-2 (SO) - Y8-5 (SI) Always Below 1 Ω
      Y7-3 (EO) - Y8-6 (EI) Always Below 1 Ω
      Y7-1 (BO) or Y8-4 (BI) - Body ground Always 10 kΩ or higher
      Y7-2 (SO) or Y8-5 (SI) - Body ground Always 10 kΩ or higher
      Y7-3 (EO) or Y8-6 (EI) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  7

  7. INSPECT REAR CORNER ULTRASONIC SENSOR RH 
    1. Measure the resistance according to the value (s) in the table below.
      GTY565900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Rear Corner Ultrasonic Sensor RH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 (BI) - 6 (EI) Always 10 kΩ or higher
      4 (BI) - 1 (BO) Always Below 1 Ω
      5 (SI) - 2 (SO) Always Below 30 Ω
      6 (EI) - 3 (EO) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR CORNER ULTRASONIC SENSOR RH. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    OK 

    See step  8

  8. INSPECT REAR CENTER ULTRASONIC SENSOR RH 
    1. Measure the resistance according to the value (s) in the table below.
      GTY565900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Rear Center Ultrasonic Sensor RH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 (BI) - 6 (EI) Always 10 kΩ or higher
      4 (BI) - 1 (BO) Always Below 1 Ω
      5 (SI) - 2 (SO) Always Below 30 Ω
      6 (EI) - 3 (EO) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR CENTER ULTRASONIC SENSOR RH. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    OK 

    See step  9

  9. INSPECT REAR CENTER ULTRASONIC SENSOR LH 
    1. Measure the resistance according to the value (s) in the table below.
      GTY565900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Rear Center Ultrasonic Sensor LH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 (BI) - 6 (EI) Always 10 kΩ or higher
      4 (BI) - 1 (BO) Always Below 1 Ω
      5 (SI) - 2 (SO) Always Below 30 Ω
      6 (EI) - 3 (EO) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR CENTER ULTRASONIC SENSOR LH. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    OK 

    See step  10

  10. INSPECT REAR CORNER ULTRASONIC SENSOR LH 
    1. Measure the resistance according to the value (s) in the table below.
      GTY963835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Rear Corner Ultrasonic Sensor LH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 (BI) - 6 (EI) Always 10 kΩ or higher
      4 (BI) - 1 Always Below 1 Ω
      5 (SI) - 2 Always Below 30 Ω
      6 (EI) - 3 Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR CORNER ULTRASONIC SENSOR LH. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    OK 

    See step  11

  11. REPLACE REAR CORNER ULTRASONIC SENSOR RH 

    See step  2

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  12

  12. CHECK DTC OUTPUT (C1AED) 
    1. Clear the DTCs.

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

    2. Check for DTCs.

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

      Result

      Result Proceed to
      DTC C1AED is output A
      No DTCs are output B

    Result: 

    B 

    END (REAR RIGHT SENSOR WAS DEFECTIVE) 

    Result: 

    A 

    See step  13

  13. REPLACE REAR CENTER ULTRASONIC SENSOR RH 

    See step  2

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  14

  14. CHECK DTC OUTPUT (C1AED) 
    1. Clear the DTCs.

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

    2. Check for DTCs.

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

      Result

      Result Proceed to
      DTC C1AED is output A
      No DTCs are output B

    Result: 

    B 

    END (REAR RIGHT CENTER SENSOR WAS DEFECTIVE) 

    Result: 

    A 

    See step  15

  15. REPLACE REAR CENTER ULTRASONIC SENSOR LH 

    See step  2

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  16

  16. CHECK DTC OUTPUT (C1AED) 
    1. Clear the DTCs.

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

    2. Check for DTCs.

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

      Result

      Result Proceed to
      DTC C1AED is output A
      No DTCs are output B

    Result: 

    B 

    END (REAR LEFT CENTER SENSOR WAS DEFECTIVE) 

    Result: 

    A 

    See step  17

  17. REPLACE REAR CORNER ULTRASONIC SENSOR LH 

    See step  2

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  18

  18. CHECK DTC OUTPUT (C1AED) 
    1. Clear the DTCs.

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

    2. Check for DTCs.

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

      Result

      Result Proceed to
      DTC C1AED is output A
      No DTCs are output B

    Result: 

    A 

    REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    B 

    END (REAR LEFT SENSOR WAS DEFECTIVE) 

scientia non olet · About LEMON Manuals