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

DESCRIPTION

• When the engine immobiliser system is set, the security indicator light blinks continuously, but does not illuminate if the engine immobiliser system is not set.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

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

   
   

   1. Check that the security indicator light illuminates when operating it with the Active Test Click here.

      Immobiliser

      Tester Display	Test Part	Control Range	Diagnostic Note
      Security Indicator	Security indicator light	ON/OFF	The test is possible when the following conditions are met: The key is in the ignition key cylinder.

      OK
      Security indicator light can be turned on and off using the intelligent tester.

   
   

   NG

   INSPECT SECURITY INDICATOR LIGHT ASSEMBLY Click here

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

2. INSPECT SECURITY INDICATOR LIGHT ASSEMBLY

   
   

   1. 

      Remove the security indicator light assembly Click here.

   2. Apply battery voltage between the terminals of the security indicator light assembly and check that the security indicator light illuminates.

      OK
      Measurement Condition Specified Condition Battery positive (+) → 2 (LP) Battery negative (-) → 5 (E) Security indicator light illuminates

   
   

   NG

   REPLACE SECURITY INDICATOR LIGHT ASSEMBLY Click here

   OK

3. CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR - TRANSPONDER KEY ECU AND BODY GROUND)

   
   

   1. Disconnect the H23 light connector.

   2. Disconnect the G138*1 or G74*2 ECU connector.

      
      

      • *1: for 5L-E

      • *2: except 5L-E

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

      Standard Resistance
      for 5L-E Tester Connection Condition Specified Condition H23-2 (LP) - G138-8 (IND) Always Below 1 Ω H23-5 (E) - Body ground Always Below 1 Ω H23-2 (LP) or G138-8 (IND) - Body ground Always 10 kΩ or higher
      except 5L-E Tester Connection Condition Specified Condition H23-2 (LP) - G74-8 (IND) Always Below 1 Ω H23-5 (E) - Body ground Always Below 1 Ω H23-2 (LP) or G74-8 (IND) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE TRANSPONDER KEY ECU ASSEMBLY