LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2011 >> Prius >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System (Diagnostic Codes & Symptom Tests) >> Navigation System >> Circuit Tests >> Sound Signal Circuit between Stereo Component Tuner Assembly and Multi-media Interface ECU >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Sound Signal Circuit between Stereo Component Tuner Assembly and Multi-media Interface ECU: Procedure

  1. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - STEREO COMPONENT TUNER ASSEMBLY) 
    1. Disconnect the L111 multi-media interface ECU connector.
    2. Disconnect the L15 stereo component tuner assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      L111-8 (URI+) - L15-2 (FRO+) Always Below 1 Ω
      L111-16 (URI-) - L15-3 (FRO-) Always Below 1 Ω
      L111-7 (ULI+) - L15-4 (FLO+) Always Below 1 Ω
      L111-15 (ULI-) - L15-5 (FLO-) Always Below 1 Ω
      L111-6 (USD2) - Body ground Always 10 kΩ or higher
      L111-8 (URI+) - Body ground Always 10 kΩ or higher
      L111-16 (URI-) - Body ground Always 10 kΩ or higher
      L111-7 (ULI+) - Body ground Always 10 kΩ or higher
      L111-15 (ULI-) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   2 

  2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE