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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Lighting System (Int) (Hybrid) - Diagnostics & Circuit Tests) >> LIGHTING SYSTEM (for HV Model) >> Ambient Illumination Light Circuit [06/2018 - ] >> Procedure

Ambient Illumination Light Circuit [06/2018 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. PERFORM ACTIVE TEST USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Interior Illumination Light1 No. 1 instrument panel light sub-assembly ON or OFF Preconditions for using the Active Test to check dimmer controlled illumination:
      • Power switch on (IG)
      • Shift lever is in any position other than P
      Interior Illumination Light2
      • Door inside handle illumination light assembly
      • Door ambient light (Door trim board sub-assembly)
      		 ON or OFF Preconditions for using the Active Test to check dimmer controlled illumination:
      • Power switch on (IG)
      • Shift lever is in any position other than P

      Body Electrical > Main Body > Active Test 

      Tester Display
      Interior Illumination Light1

      Body Electrical > Main Body > Active Test 

      Tester Display
      Interior Illumination Light2

      OK

      Door inside handle illumination lights, door ambient lights and No. 1 instrument panel light come on.

      Result

      Result Proceed to
      OK A
      NG (No. 1 instrument panel light does not come on) B
      NG (Front door inside handle illumination light LH does not come on) C
      NG (Front door inside handle illumination light RH does not come on) D
      NG (Rear door inside handle illumination light LH does not come on) E
      NG (Rear door inside handle illumination light RH does not come on) F
      NG (Front door ambient light LH does not come on) G
      NG (Front door ambient light RH does not come on) H
      NG (Rear door ambient light LH does not come on) I
      NG (Rear door ambient light RH does not come on) J
      NG (All door inside handle illumination lights and all door ambient lights do not come on) K
      NG (All door inside handle illumination lights, all door ambient lights and No. 1 instrument panel light do not come on) L

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    C 

    See step  6

    Result: 

    D 

    See step  9

    Result: 

    E 

    See step  12

    Result: 

    F 

    See step  15

    Result: 

    G 

    See step  18

    Result: 

    H 

    See step  21

    Result: 

    I 

    See step  24

    Result: 

    J 

    See step  27

    Result: 

    K 

    See step  30

    Result: 

    L 

    See step  33

    Result: 

    B 

    See step  2

  2. INSPECT NO. 1 INSTRUMENT PANEL LIGHT SUB-ASSEMBLY 
    1. Remove the No. 1 instrument panel light sub-assembly.

      Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - ]

    2. Inspect the No. 1 instrument panel light sub-assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 1 INSTRUMENT PANEL LIGHT SUB-ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (NO. 1 INSTRUMENT PANEL LIGHT SUB-ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      H5-3 (E) - G38-20 (LED1) Always Below 1 Ω
      H5-3 (E) or G38-20 (LED1) - 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 (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - NO. 1 INSTRUMENT PANEL LIGHT SUB-ASSEMBLY) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-24 - H5-5 (B) Always Below 1 Ω
      3D-24 or H5-5 (B) - 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. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    GTY804658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Instrument Panel Junction Block Assembly)    		 - -
    1. Disconnect the 3K instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3K-1 - 3D-24 Always Below 1 Ω

      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 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

  6. INSPECT FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LH 
    1. Remove the front door inside handle illumination light assembly LH.

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the front door inside handle illumination light assembly LH.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LH. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      K6-1 (-) - G38-21 (LED2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LH) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - K6-2 (+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  9. INSPECT FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RH 
    1. Remove the front door inside handle illumination light assembly RH.

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the front door inside handle illumination light assembly RH.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RH. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  10

  10. CHECK HARNESS AND CONNECTOR (FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      K3-1 (-) - G38-21 (LED2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RH) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - K3-2 (+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  12. INSPECT REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LH 
    1. Remove the rear door inside handle illumination light assembly LH.

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the rear door inside handle illumination light assembly LH.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LH. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      M6-1 (-) - G38-21 (LED2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  14

  14. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY LH) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - M6-2 (+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  15. INSPECT REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RH 
    1. Remove the rear door inside handle illumination light assembly RH.

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the rear door inside handle illumination light assembly RH.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RH. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  16

  16. CHECK HARNESS AND CONNECTOR (REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      M3-1 (-) - G38-21 (LED2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  17

  17. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR DOOR INSIDE HANDLE ILLUMINATION LIGHT ASSEMBLY RH) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - M3-2 (+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  18. INSPECT FRONT DOOR AMBIENT LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH) 
    1. Remove the front door ambient light LH (front door trim board sub-assembly LH).

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the front door ambient light LH (front door trim board sub-assembly LH).

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR AMBIENT LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH). Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  19

  19. CHECK HARNESS AND CONNECTOR (FRONT DOOR AMBIENT LIGHT LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      K5-2 (-) - G38-21 (LED2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  20

  20. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FRONT DOOR AMBIENT LIGHT LH) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - K5-1 (+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  21. INSPECT FRONT DOOR AMBIENT LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) 
    1. Remove the front door ambient light RH (front door trim board sub-assembly RH).

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the front door ambient light RH (front door trim board sub-assembly RH).

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR AMBIENT LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH). Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  22

  22. CHECK HARNESS AND CONNECTOR (FRONT DOOR AMBIENT LIGHT RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      K2-2 (-) - G38-21 (LED2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  23

  23. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FRONT DOOR AMBIENT LIGHT RH) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - K2-1 (+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  24. INSPECT REAR DOOR AMBIENT LIGHT LH (REAR DOOR TRIM BOARD SUB-ASSEMBLY LH) 
    1. Remove the rear door ambient light LH (rear door trim board sub-assembly LH).

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the rear door ambient light LH (rear door trim board sub-assembly LH).

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR DOOR AMBIENT LIGHT LH (REAR DOOR TRIM BOARD SUB-ASSEMBLY LH). Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  25

  25. CHECK HARNESS AND CONNECTOR (REAR DOOR AMBIENT LIGHT LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      M5-2 (-) - G38-21 (LED2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  26

  26. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR DOOR AMBIENT LIGHT LH) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - M5-1 (+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  27. INSPECT REAR DOOR AMBIENT LIGHT RH (REAR DOOR TRIM BOARD SUB-ASSEMBLY RH) 
    1. Remove the rear door ambient light RH (rear door trim board sub-assembly RH).

      Refer to REMOVAL [06/2018 - ]

    2. Inspect the rear door ambient light RH (rear door trim board sub-assembly RH).

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR DOOR AMBIENT LIGHT RH (REAR DOOR TRIM BOARD SUB-ASSEMBLY RH). Refer to  REMOVAL [06/2018 - ] 

    Result: 

    OK 

    See step  28

  28. CHECK HARNESS AND CONNECTOR (REAR DOOR AMBIENT LIGHT RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the G38 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
      M2-2 (-) - G38-21 (LED2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  29

  29. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR DOOR AMBIENT LIGHT RH) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - M2-1 (+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  30. CHECK HARNESS AND CONNECTOR (AMBIENT ILLUMINATION LIGHTS - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) 
    1. Disconnect the K6 front door inside handle illumination light assembly LH connector.
    2. Disconnect the K3 front door inside handle illumination light assembly RH connector.
    3. Disconnect the M6 rear door inside handle illumination light assembly LH connector.
    4. Disconnect the M3 rear door inside handle illumination light assembly RH connector.
    5. Disconnect the K5 front door ambient light LH (front door trim board sub-assembly LH) connector.
    6. Disconnect the K2 front door ambient light RH (front door trim board sub-assembly RH) connector.
    7. Disconnect the M5 rear door ambient light LH (rear door trim board sub-assembly LH) connector.
    8. Disconnect the M2 rear door ambient light RH (rear door trim board sub-assembly RH) connector.
    9. Disconnect the G38 main body ECU (multiplex network body ECU) connector.
    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K6-1 (-), K3-1 (-), M6-1 (-), M3-1 (-), K5-2 (-), K2-2 (-), M5-2 (-) or M2-2 (-) - G38-21 (LED2) Always Below 1 Ω
      K6-1 (-), K3-1 (-), M6-1 (-), M3-1 (-), K5-2 (-), K2-2 (-), M5-2 (-), M2-2 (-) or G38-21 (LED2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  31

  31. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - AMBIENT ILLUMINATION LIGHTS) 
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-26 - K6-2 (+), K3-2 (+), M6-2 (+), M3-2 (+), K5-1 (+), K2-1 (+), M5-1 (+) or M2-1 (+) Always Below 1 Ω
      3D-26, K6-2 (+), K3-2 (+), M6-2 (+), M3-2 (+), K5-1 (+), K2-1 (+), M5-1 (+) or M2-1 (+) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  32

  32. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    GTY804658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Instrument Panel Junction Block Assembly)    		 - -
    1. Disconnect the 3K instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3K-1 - 3D-26 Always Below 1 Ω

      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 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

  33. CHECK HARNESS AND CONNECTOR (POWER SOURCE - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the 3K instrument panel junction block assembly connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      3K-1 - Body ground Power switch off 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  34

  34. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    GTY804658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Instrument Panel Junction Block Assembly)    		 - -
    1. Disconnect the 3D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3K-1 - 3D-24 Always Below 1 Ω
      3K-1 - 3D-26 Always Below 1 Ω

      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 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

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