Theft Deterrent System Unlock Warning Switch Circuit

Vehicle Interior. Corolla. Zre142 Aze141
Theft Deterrent Keyless Entry. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH ASSEMBLY)

INSPECT UNLOCK WARNING SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - BODY GROUND)

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - THEFT WARNING ECU ASSEMBLY)

THEFT DETERRENT SYSTEM - Unlock Warning Switch Circuit


DESCRIPTION

The key unlock warning switch assembly turns on when the ignition key is inserted into the ignition key cylinder and turns off when the ignition key is removed.
The theft warning ECU assembly operates the key confinement prevention function while the key unlock warning switch assembly is on.

WIRING DIAGRAM


Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Theft Deterrent System Unlock Warning Switch Circuit


INSPECTION PROCEDURE

1.READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH ASSEMBLY)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Select the item below in the Data List and then read the display on the Techstream.

    Security
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Key unlock warning switch
    		Unlock warning switch signal / ON or OFF
    		ON: Key is inserted into ignition key cylinder
    OFF: Key is removed from ignition key cylinder
    		-
    OK:
    When the key is in the ignition key cylinder, "ON" appears on the screen.


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (COROLLA_ZRE142 RM0000026P102LX.html)

2.INSPECT UNLOCK WARNING SWITCH ASSEMBLY


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Theft Deterrent System Unlock Warning Switch Circuit

  1. Remove the unlock warning switch assembly (COROLLA_ZRE142 RM0000026TU02HX.html).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E5-1 - E5-2
    		Free
    (Key removed)
    		10 kΩ or higher
    E5-1 - E5-2
    		Pushed
    (Key set)
    		Below 1 Ω


NG
REPLACE UNLOCK WARNING SWITCH ASSEMBLY (COROLLA_ZRE142 RM0000026TU02HX.html)
OK


3.CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - BODY GROUND)


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Theft Deterrent System Unlock Warning Switch Circuit

  1. Disconnect the E5 unlock warning switch assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E5-2 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - THEFT WARNING ECU ASSEMBLY)


  1. Disconnect the E110 theft warning ECU assembly connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Theft Deterrent System Unlock Warning Switch Circuit

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E5-1 - E110-7 (KSW)
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE THEFT WARNING ECU ASSEMBLY (COROLLA_ZRE142 RM00000342K00IX.html)