CLEARANCE SONAR MAIN SWITCH INSPECTION

PROCEDURE

  1. INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

    U123955E01

    1. Check the resistance.

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

        Standard Resistance

        Tester Connection

        Switch Condition

        Specified Condition

        3 (ECU) - 6 (IG)

        Sonar switch off

        10 kΩ or higher

        Sonar switch on

        Below 1 Ω

    2. Inspect the indicator operation.

      OK

      Measurement Condition

      Specified Condition

      Battery positive (+) → Terminal 3 (ECU)

      Battery negative (-) → Terminal 7 (E)

      LED illuminates

      If the result is not as specified, replace the back sonar or clearance sonar switch assembly.

    3. Inspect the illumination operation.

      OK

      Measurement Condition

      Specified Condition

      Battery positive (+) → Terminal 5 (ILL+)

      Battery negative (-) → Terminal 4 (ILL-)

      LED illuminates

      If the result is not as specified, replace the back sonar or clearance sonar switch assembly.

      Table 1. Text in Illustration

      *1

      Component without harness connected

      (Back Sonar or Clearance Sonar Switch Assembly)