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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis >> Electrical >> Gauges >> Meter / Gauge System - Diagnostic Codes (3 Of 3) & Symptom Tests (1 Of 2) >> Meter / Gauge System >> DTC B1511-87: Lost Communication with Meter Gigabit Video Interface Missing Message [10/2023 - ] >> Procedure

DTC B1511-87: Lost Communication with Meter Gigabit Video Interface Missing Message [10/2023 - ]: Procedure

  1. CHECK HARNESS AND CONNECTOR (METER MIRROR SUB-ASSEMBLY - COMBINATION METER ASSEMBLY) 
    1. Disconnect the G178 meter mirror sub-assembly connector.
    2. Disconnect the G179 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G178-1 (HGV-) - G179-2 (MGV-) Always Below 1 Ω
      G178-2 (HGV+) - G179-1 (MGV+) Always Below 1 Ω
      G178-3 (HGVG) - G179-3 (MGVG) Always Below 1 Ω
      G178-1 (HGV-) or G179-2 (MGV-) - Body ground Always 10 kΩ or higher
      G178-2 (HGV+) or G179-1 (MGV+) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  2

  2. REPLACE METER MIRROR SUB-ASSEMBLY 
    1. Replace the meter mirror sub-assembly with a new or known good one.

      HINT: 

      Refer to REMOVAL [10/2023 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result  Proceed to
      B1510-87 is not output A
      B1510-87 is output B

    Result: 

    A 

    END (METER MIRROR SUB-ASSEMBLY IS DEFECTIVE) 

    Result: 

    B 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2023 - ]