THEFT DETERRENT SYSTEM Security Indicator Light Circuit

DESCRIPTION

• When the theft deterrent system is in the disarmed state, the security indicator will flash continuously if the immobiliser system is set, or not illuminate if the immobiliser system is not set.

  When the theft deterrent system is in the armed state, the immobiliser system is automatically set and the security indicator will flash continuously.

  When the theft deterrent system is in the arming preparation state and alarm sounding state, the certification ECU (smart key ECU assembly) causes the security indicator to be illuminated.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SECURITY INDICATOR)

   
   

   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 Indicator	Security indicator	ON / OFF	-

      OK
      Security indicator illuminates.

   
   

   NG

   CHECK HARNESS AND CONNECTOR (COMBINATION METER - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] AND BODY GROUND) Click here

   OK

   REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

2. CHECK HARNESS AND CONNECTOR (COMBINATION METER - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] AND BODY GROUND)

   

   
   

   1. Disconnect the E77 meter connector.

   2. Disconnect the E29 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition E77-4 (LP) - E29-2 (IND) Always Below 1 Ω E77-26 (ET) - Body ground Always Below 1 Ω E77-4 (LP) or E29-2 (IND) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE COMBINATION METER Click here