THEFT DETERRENT SYSTEM(for 5L-E) Horn Circuit

DESCRIPTION

When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the horn to sound at intervals of 0.4 seconds.

WIRING DIAGRAM

B001HEKE03

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK HORNS OPERATION


    1. Press the horn switch and check if the horns sound.

      Result
      Result Proceed to
      Horns sound A
      Horns do not sound B

    B

    GO TO HORN SYSTEM Click here

    A

  2. INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY


    1. Remove the driver side junction block assembly.

      Click here

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

      B001E5XE01
      *1 HORN
      Standard Resistance
      Tester Connection Condition Specified Condition
      2F-29 - A-28 (HORN) Always Below 1 Ω

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here