TOYOTA PARKING ASSIST-SENSOR SYSTEM(for 4 Sensor Type) Taillight Relay Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01QOGIE01
*1 from PANEL Fuse
*2 Clearance Warning ECU Assembly

CAUTION / NOTICE / HINT

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.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

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


    1. A01QTLTC01
      *a

      Front view of wire harness connector

      (to Clearance Warning ECU Assembly)

      Disconnect the G33 clearance warning ECU assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G33-20 (TL) - Body ground Ignition switch ON, light control switch TAIL 11 to 14 V
      Ignition switch ON, light control 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