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Home >> Lexus >> 2021 >> ES 300h Luxury >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Exterior Trim >> Rear Sunshade System (Hybrid) - Diagnostics & Symptom Tests >> REAR SUNSHADE SYSTEM (for HV Model) >> Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position [06/2018 - ] >> Procedure

Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position [06/2018 - ]: Procedure

  1. READ VALUE USING TECHSTREAM (SHIFT POSITION SENSOR (R)) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Hybrid Control / Data List.
    5. Read the Data List according to the display on the Techstream.

      Powertrain > Hybrid Control > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Shift Position Sensor (R) Shift lever position sensor ON or OFF ON: Shift lever in R
      OFF: Shift lever not in R
      -

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Shift Position Sensor (R)

      OK

      The Techstream display changes according to the shift position selected by using the shift lever.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO HYBRID CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    OK 

    See step  2

  2. PERFORM ACTIVE TEST USING TECHSTREAM (REVERSE GEAR SIGNAL) 
    1. Enter the following menus: Body Electrical / Main Body / Active Test.
    2. Perform the Active Test according to the display on the Techstream.

      HINT: 

      Make sure that the rear window shade assembly is raised before performing the Active Test.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Reverse Gear Signal Reverse signal OFF/ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Reverse Gear Signal

      OK

      The rear window shade assembly is lowered.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (REVERSE SIGNAL) 
    1. Disconnect the N63 rear sunshade relay connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      N63-3 (REV) - Body ground Power switch on (IG), shift lever in any position other than R → R 11 to 14 V → Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REAR SUNSHADE RELAY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (REAR SUNSHADE RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G36 main body ECU (multiplex network body ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G36-6 (REV) - N63-3 (REV) Always Below 1 Ω
      G36-6 (REV) or N63-3 (REV) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR