IMMOBILISER SYSTEM(w/o Entry and Start System) Security Indicator Light Does not Blink

DESCRIPTION

The transponder key ECU assembly blinks the security indicator light when the immobiliser is set.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. SYSTEM CHECK

   
   

   1. Check the vehicle specification.

      Result
      Result Proceed to w/o Theft Deterrent System A w/ Theft Deterrent System B

   
   

   B

   PERFORM ACTIVE TEST USING GTS (SECURITY INDICATOR) Click here

   A

2. PERFORM ACTIVE TEST USING GTS (SECURITY INDICATOR)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Immobiliser / Active Test.

   5. Perform the Active Test according to the display on the GTS.

      
      Body Electrical > Immobiliser > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Security Indicator	Security indicator light	ON/OFF	-

      
      Body Electrical > Immobiliser > Active Test

      Tester Display
      Security Indicator

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

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE TRANSPONDER KEY ECU ASSEMBLY

   NG

3. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - TELLTALE LIGHT ASSEMBLY AND BODY GROUND)

   
   

   1. Disconnect E21 transponder key ECU assembly connector.

   2. Disconnect the E48 security indicator light (telltale light assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition E48-9 (LP) - E21-8 (IND) Always Below 1 Ω E48-9 (LP) - Body ground Always 10 kΩ or higher E21-8 (IND) - Body ground Always 10 kΩ or higher E48-6 (ILL-) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. CHECK TRANSPONDER KEY ECU ASSEMBLY (TERMINAL IND)

   
   

   1. Connect the E21 transponder key ECU assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition E48-9 (LP) - Body ground Key not in ignition key cylinder Pulse generation Key in ignition key cylinder Below 1 V

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY)

   NG

   REPLACE TRANSPONDER KEY ECU ASSEMBLY

5. PERFORM ACTIVE TEST USING GTS (SECURITY INDICATOR)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Immobiliser or Main Body / Active Test.

   5. Perform the Active Test according to the display on the GTS.

      
      Body Electrical > Immobiliser > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Security Indicator	Security indicator light	ON/OFF	-

      
      Body Electrical > Immobiliser > Active Test

      Tester Display
      Security Indicator

      
      Body Electrical > Main Body > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Security Indicator	Security indicator light	ON/OFF	-

      
      Body Electrical > Main Body > Active Test

      Tester Display
      Security Indicator

      Result

      Result Proceed to Security indicator light operation is normal when performing the "Main Body" and "Immobiliser" Active Test A Security indicator light operation is not normal when performing the "Immobiliser" Active Test Security indicator light operation is normal when performing the "Main Body" Active Test B Security indicator light operation is normal when performing the "Immobiliser" Active Test Security indicator light operation is not normal when performing the "Main Body" Active Test C Security indicator light operation is not normal when performing the "Main Body" and "Immobiliser" Active Test D

   
   

   B

   CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - TRANSPONDER KEY ECU ASSEMBLY) Click here

   C

   CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - MAIN BODY ECU) Click here

   D

   CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - MAIN BODY ECU OR TRANSPONDER KEY ECU) Click here

   A

6. CHECK SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) OPERATION

   
   

   1. When the immobiliser is set, check that the security indicator light blinks.*1

      OK
      The security indicator light blinks normally.

   2. When the theft deterrent system is in the arming preparation state, check that the security indicator light is on.*2

      Click here

      OK
      The security indicator light is on.

      Result
      Result Proceed to Both *1 and *2 are OK A *1 is NG (*2 is OK) B *2 is NG (*1 is OK) (for LHD) C *2 is NG (*1 is OK) (for RHD) D Both *1 and *2 are NG E

   
   

   A

   USE SIMULATION METHOD TO CHECK Click here

   B

   REPLACE TRANSPONDER KEY ECU ASSEMBLY

   C

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

   D

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

   E

   REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) Click here

7. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - TRANSPONDER KEY ECU ASSEMBLY)

   
   

   1. Disconnect the E48 security indicator light (telltale light assembly) connector.

   2. Disconnect the E21 transponder key ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition E21-8 (IND) - E48-9 (LP) Always Below 1 Ω E21-8 (IND) - Body ground Always 10 kΩ or higher E48-9 (LP) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE TRANSPONDER KEY ECU ASSEMBLY

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

8. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - MAIN BODY ECU)

   
   

   1. Disconnect the E48 security indicator light (telltale light assembly) connector.

   2. Disconnect the E108 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition E108-22 (IND) - E48-9 (LP) Always Below 1 Ω E108-22 (IND) - Body ground Always 10 kΩ or higher E48-9 (LP) - Body ground Always 10 kΩ or higher

      Result
      Result Proceed to OK (for LHD) A OK (for RHD) B NG C

   
   

   A

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

   B

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

   C

   REPAIR OR REPLACE HARNESS OR CONNECTOR

9. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - MAIN BODY ECU OR TRANSPONDER KEY ECU)

   
   

   1. Disconnect the E48 security indicator light (telltale light assembly) connector.

   2. Disconnect E21 transponder key ECU assembly connector.

   3. Disconnect the E108 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition E21-8 (IND) - E48-9 (LP) Always Below 1 Ω E108-22 (IND) - E48-9 (LP) Always Below 1 Ω E21-8 (IND) - Body ground Always 10 kΩ or higher E48-9 (LP) - Body ground Always 10 kΩ or higher E48-6 (ILL-) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

10. REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY)

    
    

    1. Temporarily replace the security indicator light (telltale light assembly) with a new or known good one.

       Click here

    2. When the immobiliser is set or theft deterrent system is in the arming preparation state, check that the security indicator light blinks.

       OK
       Security indicator light blinks.

       Result
       Proceed to OK NG

    
    

    OK

    END (SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) WAS DEFECTIVE)

    NG

11. REPLACE TRANSPONDER KEY ECU ASSEMBLY

    
    

    1. Temporarily replace the transponder key ECU assembly with a new or known good one.

       Tech Tips

       Refer to Service Bulletin.

    2. When the immobiliser is set or theft deterrent system is in the arming preparation state, check that the security indicator light blinks.

       OK
       Security indicator light blinks.

       Result
       Result Proceed to OK A NG (for LHD) B NG (for RHD) C

    
    

    A

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here