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 INTELLIGENT TESTER (THEFT WARNING SIREN)

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

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - THEFT WARNING SIREN)

CHECK THEFT WARNING SIREN (OPERATION)

CHECK HARNESS AND CONNECTOR (HOOD LOCK ASSEMBLY - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY AND THEFT WARNING SIREN)

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


DESCRIPTION

The theft warning siren sounds if either of the following condition is met:
  1. The theft deterrent system is in the alarm sounding state.
  2. The theft warning siren is in the armed state when +B, GND or the communication line is open.

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. When replacing the theft warning siren assembly, refer to the Service Bulletin.
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (THEFT WARNING SIREN)

  1. Operate the intelligent tester according to the steps on the display and select "Active Test".

    Entry&Start
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Security Horn2
    		Theft warning siren
    		ON / OFF
    		-
    OK:
    Siren operates normally.


NG
Go to step 2
OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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 K46 theft warning siren assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    K46-5 (+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
    K46-2 (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 (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - THEFT WARNING SIREN)

  1. Disconnect the E30 certification ECU (smart key ECU assembly) connector.

  1. Disconnect the K46 theft warning siren assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E30-7 (SSCL) - K46-4 (CONT)
    		Always
    		Below 1 Ω
    E30-7 (SSCL) - Body ground
    		Always
    		10 kΩ or higher
    Result
    Result
    		Proceed to
    OK
    		A
    NG (except Hood Courtesy Switch Connector 4 Pin Type)
    		B
    NG (for Hood Courtesy Switch Connector 4 Pin Type)
    		C


B
REPAIR OR REPLACE HARNESS OR CONNECTOR

C
Go to step 5
A


4.CHECK THEFT WARNING SIREN (OPERATION)

  1. Temporarily replace the theft warning siren assembly with a new or known good one (refer to the Service Bulletin).

  1. Check that the theft warning siren operates normally.

    OK:
    Operates normally.


NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK

END (THEFT WARNING SIREN ASSEMBLY IS DEFECTIVE)

5.CHECK HARNESS AND CONNECTOR (HOOD LOCK ASSEMBLY - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY AND THEFT WARNING SIREN)

  1. Disconnect the E30 certification ECU (smart key ECU assembly) connector.

  1. Disconnect the A8 hood lock assembly connector.

  1. Disconnect the K46 theft warning siren assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A8-1 (SLF+) - E30-7 (SSCL)
    		Always
    		Below 1 Ω
    A8-3 (SLF-) - K46-4 (CONT)
    		Always
    		Below 1 Ω
    A8-1 (SLF+) - Body ground
    		Always
    		10 kΩ or higher
    A8-3 (SLF-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE HOOD LOCK ASSEMBLY (Click here)