Theft Deterrent System (For Sedan) Security Indicator Light Circuit

Vehicle Interior. Yaris. Ncp93, 131
Theft Deterrent Keyless Entry. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING TECHSTREAM (SECURITY INDICATOR LIGHT)

CHECK SECURITY INDICATOR LIGHT ASSEMBLY

CHECK HARNESS AND CONNECTOR (THEFT WARNING ECU - SECURITY INDICATOR LIGHT ASSEMBLY)

CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT ASSEMBLY - BODY GROUND)

THEFT DETERRENT SYSTEM (for Sedan) - Security Indicator Light Circuit


DESCRIPTION

While the theft deterrent system is preparing itself to be set, this circuit lights up the security indicator light. When the system is set, it continuously turns the indicator light on for 0.2 seconds and then turns it off for 1.8 seconds, thus the indicator light blinks.

WIRING DIAGRAM


Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Theft Deterrent System (For Sedan) Security Indicator Light Circuit


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST USING TECHSTREAM (SECURITY INDICATOR LIGHT)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester main switch ON.

  1. Select the item below in the Active Test and then check that the security indicator operates.

    Theft Warning ECU:

    Item
    		Test Details
    		Diagnostic Note
    Security Indicator
    		Security indicator light ON/OFF
    		-
    OK:
    The security indicator light turns on and off correctly when it is operated through the tester.


NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2.CHECK SECURITY INDICATOR LIGHT ASSEMBLY


    Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Theft Deterrent System (For Sedan) Security Indicator Light Circuit

  1. Disconnect the D25 security indicator light connector.

  1. Apply battery voltage to the terminals of the security indicator and check the lighting condition.

    Standard:
    Measurement Condition
    		Specified Operation
    Battery positive (+) - Terminal 2
    Battery negative (-) - Terminal 6
    		Indicator light comes on.

  1. Reconnect the indicator light connector.



NG
REPLACE SECURITY INDICATOR LIGHT ASSEMBLY (YARIS_NCP93 RM000001EEX043X.html)
OK


3.CHECK HARNESS AND CONNECTOR (THEFT WARNING ECU - SECURITY INDICATOR LIGHT ASSEMBLY)


    Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Theft Deterrent System (For Sedan) Security Indicator Light Circuit

  1. Disconnect the D26 theft warning ECU and the D25 security indicator light connectors.

  1. Measure the resistance.

    Standard resistance:
    Tester Connection
    		Specified Condition
    D26-29 (IND) - D25-2
    		Below 1 Ω
    D26-29 (IND) - Body ground
    		10 kΩ or higher

  1. Reconnect the theft warning ECU and the security indicator light connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT ASSEMBLY - BODY GROUND)

  1. Disconnect the D25 security indicator light connector.



    Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Theft Deterrent System (For Sedan) Security Indicator Light Circuit

  1. Measure the resistance.

    Standard resistance:
    Tester Connection
    		Specified Condition
    D25-6 - Body ground
    		Below 1 Ω

  1. Reconnect the security indicator light connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE THEFT WARNING ECU ASSEMBLY (YARIS_NCP93 RM0000033J4009X.html)