Engine Immobiliser System (W/ Entry And Start System) Security Indicator Light Does Not Blink

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

PERFORM ACTIVE TEST USING GTS (IMMOBILISER INDICATOR)

CHECK SECURITY INDICATOR LIGHT OPERATION

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - SECURITY INDICATOR LIGHT AND BODY GROUND)

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

DESCRIPTION

1. The certification ECU (smart key ECU assembly) blinks the security indicator light when the immobiliser is set (engine switch off, or driver door is opened and closed with engine switch on [IG]).
   
2. The certification ECU (smart key ECU assembly) receives the security indicator light signal from the main body ECU (multiplex network body ECU) via CAN communication when the theft deterrent system is in the arming preparation state or alarm sounding state. Then, the certification ECU (smart key ECU assembly) blinks the security indicator light.
   

WIRING DIAGRAM

1. (w/ Multi-media Module Receiver Assembly)
   

1. (w/o Multi-media Module Receiver Assembly)
   

INSPECTION PROCEDURE

NOTICE:

1. The engine immobiliser system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the engine immobiliser system after confirming that the communication systems are functioning properly (Click here).
   
2. When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
   
3. Before replacing the certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU), refer to Service Bulletin.
   

1. Check for DTCs (Click here).
   

   OK:

   DTCs are not output.
   

1. Connect the GTS to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Turn the GTS on.
   

4. Enter the following menus: Body Electrical / Entry&Start / Active Test.
   

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

   Entry&Start

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

   OK:

   The security indicator light operates normally.
   

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 illuminates*2.
   

   OK:

   The security indicator light illuminates normally.
   

   Result

   Result	Proceed to
   *1 is NG (*2 is OK)	A
   *2 is NG (*1 is OK) (for LHD)	B
   *2 is NG (*1 is OK) (for RHD)	C

1. Disconnect the E130 certification ECU (smart key ECU assembly) connector.
   

2. Disconnect the F77*1 or g1*2 security indicator light connector.
   

   1. *1: w/ Multi-media Module Receiver Assembly
      
   2. *2: w/o Multi-media Module Receiver Assembly
      

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

   Standard Resistance:

   (w/ Multi-media Module Receiver Assembly)

   Tester Connection	Condition	Specified Condition
   E130-19 (IND) - F77-37 (SEUC)	Always	Below 1 Ω
   E130-19 (IND) or F77-37 (SEUC) - Body ground	Always	10 kΩ or higher
   F77-12 (GND1) - Body ground	Always	Below 1 Ω

   (w/o Multi-media Module Receiver Assembly)

   Tester Connection	Condition	Specified Condition
   E130-19 (IND) - g1-9 (LP)	Always	Below 1 Ω
   130-19 (IND) or g1-9 (LP) - Body ground	Always	10 kΩ or higher
   g1-1 (E) - Body ground	Always	Below 1 Ω

1. Connect the E130 certification ECU (smart key ECU assembly) connector.
   

   
   
   
   
   

   Text in Illustration

   *a

   Component with harness connected (Certification ECU [Smart Key ECU Assembly])

   -

   -

2. Connect the F77*1 or g1*2 security indicator light connector.
   

   1. *1: w/ Multi-media Module Receiver Assembly
      
   2. *2: w/o Multi-media Module Receiver Assembly
      

3. Using an oscilloscope, check the waveform.
   

   Measurement Condition:

   Tester Connection	Condition	Specified Condition
   E130-19 (IND) - Body ground	Engine switch off → on (IG)	Pulse generation → Below 2 V

   Result

   Result	Proceed to
   OK (w/ Multi-media Module Receiver Assembly)	A
   OK (w/o Multi-media Module Receiver Assembly)	B
   NG	C