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Home >> Lexus >> 2009 >> LS 460L AWD >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Park Assist/Monitoring >> Intuitive Parking Assist System >> Clearance Sonar Main Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. READ VALUE USING TECHSTREAM (MAIN SWITCH) 
    1. Use the Data List to check if the clearance sonar main switch is functioning properly.

      Intuitive P/A 

      INTUITIVE P/A DATA LIST

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Main Switch Clearance sonar main switch/ OFF or ON OFF: Clearance sonar main switch OFF
      ON: Clearance sonar main switch ON
      -

      NG: Go to step 2 

      OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE )

  2. CHECK FUSE (D-IG1-1, D MPX-B 1) 
    1. Remove the D-IG1-1 and D MPX-B 1 fuses from driver side junction block.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFIED CONDITIONS

      Tester Connection Condition Specified Condition
      D-IG1-1 fuse Always Below 1 Ω
      D MPX-B 1 fuse Always Below 1 Ω

      NG: REPLACE FUSE 

      OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH POWER SUPPLY) 
    1. Disconnect the switch connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFIED CONDITIONS

      Tester Connection Condition Specified Condition
      L6-1 (E) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFIED CONDITIONS

      Tester Connection Condition Specified Condition
      L6-12 (B) - Body ground Always 11 to 14 V
      L6-11 (IG) - Body ground Engine switch on (IG) 11 to 14 V
    Fig 1: Identifying L6 Outer Mirror Switch Connector Terminals
    G04951885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE )