TOYOTA PARKING ASSIST-SENSOR SYSTEM Dimmer Signal Circuit

DESCRIPTION

This is the power source circuit of the clearance warning ECU.

WIRING DIAGRAM

A01BCREE03

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK TAILLIGHT


    1. Turn the light control switch to the TAIL position.

    2. Check that the taillight turns on.

      OK
      Taillight turns on.

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

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


    1. A01BE94E03

      Disconnect the H54 clearance warning ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H54-24 (TL) - Body ground Ignition switch ON, light control switch tail or head 11 to 14 V
      Ignition switch ON, light control switch not tail or head Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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