ENGINE IMMOBILISER SYSTEM (w/o Smart Entry and Start System) Security Indicator Light Circuit

DESCRIPTION

When the transponder key is registered, the transponder key ECU assembly outputs the key registration condition by lighting up, blinking or turning off the security indicator light.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SECURITY INDICATOR LIGHT)

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the ignition switch to the ON position.

   3. Turn the tester on.

   4. Perform the Active Test according to the display on the tester.

      Table 1. Immobiliser:

      Tester Display	Test Part	Control Range	Diagnostic Note
      Security Indic	Security indicator light	ON/OFF	-

      OK
      The security indicator light turns on and off according to the tester operation.

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - SECURITY INDICATOR LIGHT)

   
   
   1. 

      Disconnect the transponder key ECU and security indicator light connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition D37-8 (IND) - E13-2 (IND+) Always Below 1 Ω D37-8 (IND) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
3. Click here

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

   
   
   1. 

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

      Standard resistance
      Tester Connection Condition Specified Condition E13-5 (E) - Body ground Always Below 1 Ω

   
   
   • OKClick here
   • NGClick here
4. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

5. Click here

   REPLACE SECURITY INDICATOR LIGHTClick here

6. Click here

   REPLACE TRANSPONDER KEY ECU ASSEMBLY