Theft Deterrent System (W/ Entry And Start System) Theft Warning Siren Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING GTS (SEQURITY HORN2)

CHECK HARNESS AND CONNECTOR (THEFT WARNING SIREN - BATTERY AND BODY GROUND)

CHECK HARNESS AND CONNECTOR (THEFT WARNING SIREN - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])

CHECK THEFT WARNING SIREN ASSEMBLY

THEFT DETERRENT SYSTEM (w/ Entry and Start System) - Theft Warning Siren Circuit


DESCRIPTION

The theft warning siren has an internal battery. If the vehicle battery cable is disconnected or any of the communication lines are open, the theft warning siren detects this and sounds its siren.
Although the theft warning siren usually sounds by receiving a signal from the main body ECU (multiplex network body ECU), the theft warning siren can sound by its internal battery in case the vehicle battery cable is disconnected.
The main body ECU (multiplex network body ECU) sends an arming signal to the theft warning siren while transferring to the armed state, and it also sends a disarming signal to the siren while switching to the disarmed state. Also, the main body ECU (multiplex network body ECU) can cause the theft warning siren to sound by sending an alarm signal during the alarm sounding state.

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) Theft Warning Siren 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. If the theft warning siren assembly is replaced, refer to the Service Bulletin.
  4. 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.PERFORM ACTIVE TEST USING GTS (SEQURITY HORN2)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Body Electrical / Main Body / Active Test.

  1. According to the display on the GTS, perform the Active Test.

    Main Body
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Security Horn2
    		Theft warning siren
    		OFF/ON
    		-
OK:
The theft warning siren assembly sounds and stops correctly when operated through the GTS.
Result
Result
Proceed to
OK (for LHD)
A
OK (for RHD)
B
NG
C


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

C
Go to step 2
A

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

2.CHECK HARNESS AND CONNECTOR (THEFT WARNING SIREN - BATTERY AND BODY GROUND)


    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) Theft Warning Siren Circuit

  1. Disconnect the E169theft warning siren assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E169-1 (+B) - Body ground
    		Always
    		11 to 14 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E169-3 (GND) - Body ground
    		Always
    		Below 1 Ω
Text in Illustration
*a
Front view of wire harness connector
(to Theft Warning Siren Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (THEFT WARNING SIREN - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])

  1. Disconnect the E169 theft warning siren assembly connector.

  1. Disconnect the E117 main body ECU (multiplex network body ECU) connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E169-2 (CONT) - E117-18 (SSCL)
    		Always
    		Below 1 Ω
    E169-2 (CONT) - Body ground
    		Always
    		10 kΩ or higher
    E117-18 (SSCL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK THEFT WARNING SIREN ASSEMBLY

  1. Temporarily replace the theft warning siren assembly with a new or normally functioning one.

    HINT:
    Refer to Service Bulletin.

  1. Check the operation of the theft warning siren assembly function.

    OK:
    Theft warning siren assembly function operates normally.
    Result
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


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

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

END (THEFT WARNING SIREN ASSEMBLY WAS DEFECTIVE)