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

DESCRIPTION

• The transponder key ECU assembly blinks the security indicator light (clock assembly) when the immobiliser is set (no key is in the ignition key cylinder).

• The main body ECU (multiplex network body ECU) blinks the security indicator light (clock assembly) when the theft deterrent system is in the arming preparation state or alarm sounding state.

WIRING DIAGRAM

*1	Security Indicator Light (Clock Assembly)
*2	Transponder Key ECU Assembly
*3	Main Body ECU (Multiplex Network Body ECU)

CAUTION / NOTICE / HINT

PROCEDURE

1. 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 (SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) - TRANSPONDER KEY ECU ASSEMBLY) Click here

   C

   CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) Click here

   D

   INSPECT SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) Click here

   A

2. CHECK SECURITY INDICATOR LIGHT (CLOCK 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) C Both *1 and *2 are NG D

   
   

   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 SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) Click here

3. CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) - TRANSPONDER KEY ECU ASSEMBLY)

   
   

   1. Disconnect the G7 security indicator light (clock assembly) connector.

   2. Disconnect the F66 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 F66-8 (IND) - G7-9 (LP) Always Below 1 Ω F66-8 (IND) or G7-9 (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

4. CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

   
   

   1. Disconnect the G7 security indicator light (clock assembly) connector.

   2. Disconnect the F19 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 F19-15 (IND) - G7-9 (LP) Always Below 1 Ω F19-15 (IND) or G7-9 (LP) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   OK

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

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

5. INSPECT SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY)

   
   

   1. Remove the security indicator light (clock assembly).

      Click here

   2. Inspect the security indicator light (clock assembly).

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) Click here

   OK

6. CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - BODY GROUND)

   
   

   1. Disconnect the G7 security indicator light (clock assembly) connector.

   2. Disconnect F66 transponder key ECU assembly connector.

   3. Disconnect the F19 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 F66-8 (IND) - G7-9 (LP) Always Below 1 Ω F19-15 (IND) - G7-9 (LP) Always Below 1 Ω G7-8 (E) - Body ground Always Below 1 Ω F66-8 (IND) or G7-9 (LP) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

7. REPLACE TRANSPONDER KEY ECU ASSEMBLY

   
   

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

      Note

      Key ID code registration is necessary when replacing the transponder key ECU assembly, refer to Service Bulletin.

      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
      Proceed to OK NG

   
   

   OK

   END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

   NG

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