LEXUS PARKING ASSIST-SENSOR SYSTEM Clearance Warning ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the clearance warning ECU.

WIRING DIAGRAM

A01NHTNE03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BATTERY)


    1. A01NF7OE50
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Clearance Warning ECU)

      Disconnect the F52 connector from the clearance warning ECU.

    2. Measure the voltage according to the value(s) on the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      F52-15 (IG) - Body ground Power switch on (IG) 11 to 14 V
      F52-15 (IG) - Body ground Power switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BODY GROUND)


    1. A01NF7OE51
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Clearance Warning ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F52-17 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here