PANORAMIC VIEW MONITOR SYSTEM ECU Power Source Circuit

DESCRIPTION

This circuit is the power source circuit to operate the parking assist ECU. The parking assist ECU controls the panoramic view monitor system.

WIRING DIAGRAM

A0027WVE21

CAUTION / NOTICE / HINT

Note

Inspect the fuse for circuits related to this system before performing the following inspection procedure.

Tech Tips


  • The parking assist ECU is connected to other ECUs via CAN communication or AVC-LAN communication.

  • If the parking assist ECU does not operate due to a power source problem, the navigation system DTC may be stored due to an AVC-LAN communication interruption.

  • If the parking assist ECU does not operate due to a power source problem, other system DTCs may be stored due to a CAN communication interruption.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BODY GROUND)


    1. Disconnect the F131 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F131-3 (GND1) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU POWER SOURCE)


    1. Disconnect the F131 parking assist ECU connector.

    2. A002BRHC26
      *a

      Front view of wire harness connector

      (to Parking Assist ECU)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F131-2 (+B) - F131-3 (GND1) Always 11 to 14 V
      F131-1 (ACC) - F131-3 (GND1) Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      F131-6 (IG) - F131-3 (GND1) Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR