Theft Deterrent System (W/ Entry And Start System) Horn Circuit

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Theft Deterrent Keyless Entry. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HORNS OPERATION

INSPECT COWL SIDE JUNCTION BLOCK LH

THEFT DETERRENT SYSTEM (w/ Entry and Start System) - 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


Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function).Theft Deterrent System (W/ Entry And Start System) Horn Circuit


INSPECTION PROCEDURE

NOTICE:
  1. If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  3. w/ Door Control Battery:
    As the door control battery is installed between the vehicle battery and main body ECU (multiplex network body ECU), first perform the inspections in On-Vehicle Inspection to confirm that there are no malfunctions in the power source circuit for the main body ECU (multiplex network body ECU) before performing this troubleshooting procedure (Click here).
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 COWL SIDE JUNCTION BLOCK LH


  1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH (Click here).


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function).Theft Deterrent System (W/ Entry And Start System) Horn Circuit

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2H-27 - A-28 (HORN)
    		Always
    		Below 1 Ω
    Result
    Result
    		Proceed to
    OK (for LHD)
    		A
    OK (for RHD)
    		B
    NG (for LHD)
    		C
    NG (for RHD)
    		D


B
REPLACE MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] (Click here)

C
REPLACE COWL SIDE JUNCTION BLOCK LH (Click here)

D
REPLACE COWL SIDE JUNCTION BLOCK LH (Click here)
A

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