LEXUS PARKING ASSIST-SENSOR SYSTEM Clearance Sonar Main Switch Circuit

DESCRIPTION

The satellite switch (clearance sonar main switch) is installed at the base of the driver side instrument panel.

When the satellite switch (clearance sonar main switch) in turned ON, an ON signal is sent to the clearance warning ECU through the BEAN line. The LEXUS parking assist-sensor system operates according to this signal.

WIRING DIAGRAM

A0161Z5E01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT SATELLITE SWITCH (CLEARANCE SONAR MAIN SWITCH)


    1. A0160XGE01

      Remove the satellite switch (clearance sonar main switch).

    2. Disconnect the satellite switch (clearance sonar main switch) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J16-2 (LSFT) - J16-5 (E) Satellite switch LH is pressed Below 1 Ω
      J16-2 (LSFT) - J16-5 (E) Satellite switch LH is not pressed 10 kΩ or higher
      J16-3 (SET) - J16-5 (E) Satellite switch ON/OFF is pressed Below 1 Ω
      J16-3 (SET) - J16-5 (E) Satellite switch ON/OFF is not pressed 10 kΩ or higher
      J16-4 (RSEL) - J16-5 (E) Satellite switch RH is pressed Below 1 Ω
      J16-4 (RSEL) - J16-5 (E) Satellite switch RH is not pressed 10 kΩ or higher

    NG

    REPLACE SATELLITE SWITCH (CLEARANCE SONAR MAIN SWITCH) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - SATELLITE SWITCH)


    1. A0162LCE01

      Disconnect the combination meter assembly connector.

    2. A015ZP3E01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J35-6 (LSEL) - J16-2 (LSFT) Always Below 1 Ω
      J35-7 (SET) - J16-3 (SET) Always Below 1 Ω
      J35-5 (RSEL) - J16-4 (RSEL) Always Below 1 Ω
      J16-5 (E) - Body ground Always Below 1 Ω
      J35-6 (LSEL) - Body ground Always 10 kΩ or higher
      J35-7 (SET) - Body ground Always 10 kΩ or higher
      J35-5 (RSEL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here