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Home >> Lexus >> 2012 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter & Gauge System (Diagnostic Codes & Symptom Tests) >> Meter/Gauge System >> Symptom Tests >> Entire Combination Meter does not Operate >> Procedure

Entire Combination Meter does not Operate: Procedure

  1. INSPECT FUSE (D MPX-B2, P-J/B) 
    1. Remove the D MPX-B2 fuse from the main body ECU.
    2. Remove the P-J/B fuse from the engine room No. 2 relay block.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      D MPX-B2 fuse Always Below 1 Ω
      P-J/B fuse

    NG → REPLACE FUSE 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (NO. 1 METER ECU - BATTERY AND BODY GROUND) 
    1. Disconnect the L10 ECU connector.
      Fig 1: Identifying L10 ECU Connector Terminals
      GTY117476Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance and voltage according to the value(s) in the table below.

      Standard resistance

      Standard voltage 

      Tester Connection Condition Specified Condition
      L10-17 (E2) - Body ground Always Below 1 Ω
      L10-18 (ES) - Body ground
      Tester Connection Switch Condition Specified Condition
      L10-14 (IG2) - Body ground Engine switch on (IG) 11 to 14 V
      L10-13 (B) - Body ground Always

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   3 

  3. REPLACE NO. 1 METER ECU. Refer to  DISASSEMBLY 
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