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LEXUS PARKING ASSIST-SENSOR SYSTEM Clearance Sonar Main Switch Circuit

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DTC Code DTC Name
  Clearance Sonar Main Switch Circuit
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DESCRIPTION

The clearance sonar main switch is installed in the outer mirror switch assembly. When the clearance sonar main switch turns ON, the ON signal is input into the ECU through the CAN communication line.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


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    READ VALUE USING INTELLIGENT TESTER (MAIN SWITCH)


    1. Use the Data List to check if the clearance sonar main switch is functioning properly.

      Table 1. Clearance Sonar
      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

      -

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    CHECK FUSE (D-IG1-1, D MPX-B 1)


    1. Remove the D-IG1-1 and D MPX-B 1 fuses from the driver side junction block.

    2. Measure the resistance according to the value(s) in the table below.

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

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    CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH POWER SUPPLY)


    1. A01GXW4E03

      Disconnect the switch connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      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
      Tester Connection Condition Specified Condition
      L6-12 (B) - Body ground Always 11 to 14 V
      L6-11 (IG) - Body ground Power switch on (IG) 11 to 14 V

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    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLEClick here

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    REPLACE FUSE

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    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLEClick here

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    REPAIR OR REPLACE HARNESS OR CONNECTOR