Theft Deterrent System Theft Warning Siren Circuit

Securities. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Theft Deterrent. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK THEFT WARNING SIREN ASSEMBLY

CHECK WIRE HARNESS (THEFT WARNING ECU - THEFT WARNING SIREN)

CHECK WIRE HARNESS (THEFT WARNING SIREN - BODY GROUND)

THEFT DETERRENT SYSTEM - Theft Warning Siren Circuit


DESCRIPTION

The theft warning siren has an internal battery. If the vehicle's battery or any of the communication lines is open, the theft warning siren detects it by itself and sounds. Although the theft warning siren usually sounds by receiving a signal from the theft warning ECU, the theft warning siren can sound by its internal battery in case the vehicle's battery is open.
The theft warning 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 theft warning ECU can cause the theft warning siren to sound by sending an alarm signal during the alarm sounding state.

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Theft Warning Siren Circuit


INSPECTION PROCEDURE

1.CHECK THEFT WARNING SIREN ASSEMBLY
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Theft Warning Siren Circuit


  1. Measure the voltage of the siren.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    L17-1 (+B) - Body ground
    		Always
    		10 to 14 V
    L17-2 (GND) - Body ground
    		Always
    		Below 1 V
    L17-3 (CONT) - Body ground
    		When switched from armed state or arming preparation state to disarmed state (1)
    		Wave pattern (1) shown in chart
    When switched from arming preparation state to disarmed state (2)
    		Wave pattern (2) shown in chart
    Normal Condition
    		Approx. 1. 4 V

    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Theft Warning Siren Circuit



NG
REPLACE THEFT WARNING SIREN
OK


2.CHECK WIRE HARNESS (THEFT WARNING ECU - THEFT WARNING SIREN)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Theft Warning Siren Circuit

  1. Disconnect the E83 ECU connector.

  1. Disconnect the L17 siren connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E83-28 (CTLS) - L17-3 (CONT)
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK WIRE HARNESS (THEFT WARNING SIREN - BODY GROUND)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Theft Warning Siren Circuit

  1. Disconnect the L17 siren connector.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    L17-2 (GND) - Body ground
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE THEFT WARNING ECU