Theft Deterrent System (W/O Entry And Start System) Security 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

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

INSPECT SECURITY HORN ASSEMBLY

INSPECT SECURITY HORN RELAY

CHECK HARNESS AND CONNECTOR (BATTERY - SECURITY HORN RELAY)

CHECK HARNESS AND CONNECTOR (SECURITY HORN RELAY - SECURITY HORN ASSEMBLY)

CHECK HARNESS AND CONNECTOR (SECURITY HORN RELAY - MAIN BODY ECU)

THEFT DETERRENT SYSTEM (w/o Entry and Start System) - Security Horn Circuit


DESCRIPTION

When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (cowl side junction block assembly LH) transmits a signal to cause the security 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/O Entry And Start System) Security Horn Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

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

  1. According to the display on the intelligent tester, perform the Active Test.

    Main Body
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Security Horn
    		Security horn
    		ON / OFF
    		-
OK:
The security horn assembly sounds and stops correctly when operated through the intelligent tester.


NG
Go to step 2
OK

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK ASSEMBLY LH)

2.INSPECT SECURITY HORN ASSEMBLY


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

  1. Remove the security horn assembly (Click here).

  1. Check the operation of the security horn assembly.

    Standard:
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 1
    		Horn sounds
    Battery negative (-) → Horn body


NG
REPLACE SECURITY HORN ASSEMBLY (Click here)
OK


3.INSPECT SECURITY HORN RELAY


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

  1. Remove the SECURITY HORN relay from the engine room relay block.

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

    Standard Resistance:
    Tester Connection
    		Specified Condition
    3 - 5
    		10 kΩ or higher
    (when battery voltage is not applied between terminals 1 and 2)
    3 - 5
    		Below 1 Ω
    (when battery voltage is applied between terminals 1 and 2)
    Text in Illustration
    *a
    		SECURITY HORN Relay


NG
REPLACE SECURITY HORN RELAY
OK


4.CHECK HARNESS AND CONNECTOR (BATTERY - SECURITY HORN RELAY)


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

  1. Remove the SECURITY HORN relay from the engine room relay block.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    Engine room relay block and junction block assembly SECURITY HORN relay terminal 2- Body ground
    		Always
    		11 to 14 V
    Engine room relay block and junction block assembly SECURITY HORN relay terminal 5 - Body ground
    		Always
    		11 to 14 V
    Text in Illustration
    *a
    		Engine Room Relay Block
    *b
    		SECURITY HORN Relay


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK HARNESS AND CONNECTOR (SECURITY HORN RELAY - SECURITY HORN ASSEMBLY)

  1. Remove the SECURITY HORN relay from the engine room relay block.

  1. Disconnect the A19 security horn assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    Engine room relay block and junction block assembly SECURITY HORN relay terminal 3 - A19-1
    		Always
    		Below 1 Ω
    Engine room relay block and junction block assembly SECURITY HORN relay terminal 3 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK HARNESS AND CONNECTOR (SECURITY HORN RELAY - MAIN BODY ECU)

  1. Remove the SECURITY HORN relay from the engine room relay block.

  1. Disconnect the E4 main body ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    Engine room relay block and junction block assembly SECURITY HORN relay terminal 2 - E4-6 (SH)
    		Always
    		Below 1 Ω
    Engine room relay block and junction block assembly SECURITY HORN relay terminal 2 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK ASSEMBLY LH)