IMMOBILISER SYSTEM(w/o Entry and Start System) Engine does not Start but Initial Combustion Occurs

DESCRIPTION

If the key ID codes of the key and transponder key ECU assembly match, the immobiliser system is unset and the engine start permission signal is sent to the ECM. When the ID codes of the transponder key ECU assembly and ECM match, the engine starts.

WIRING DIAGRAM

*1	Transponder Key ECU Assembly

CAUTION / NOTICE / HINT

PROCEDURE

1. CLEAR DTC

   
   

   1. Clear the DTCs.

      
      

      1. for 8NR-FTS:

         
         Powertrain > Engine > Clear DTCs

      2. for 3ZR-FAE:

         
         Powertrain > Engine and ECT > Clear DTCs

      Result
      Proceed to NEXT

   
   

   NEXT

2. CHECK FOR DTC

   
   

   1. Check for DTCs.

      
      Body Electrical > Immobiliser > Trouble Codes
      

      1. for 8NR-FTS:

         
         Powertrain > Engine > Trouble Codes

      2. for 3ZR-FAE:

         
         Powertrain > Engine and ECT > Trouble Codes

      OK
      DTC is not output.

      Result
      Result Proceed to DTCs are not output A DTCs are output B

   
   

   B

   GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

   A

3. READ VALUE USING GTS (IMMOBILISER FUEL CUT)

   
   

   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 / Engine / Active Test.

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

      
      

      1. for 8NR-FTS:

         
         Powertrain > Engine

         Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
         Immobiliser Fuel Cut Status	Status of immobiliser system fuel cut	OFF/ON	-	-

         
         Powertrain > Engine > Data List

         Tester Display
         Immobiliser Fuel Cut Status

      2. for 3ZR-FAE:

         
         Powertrain > Engine and ECT

         Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
         Immobiliser Fuel Cut	Status of immobiliser system fuel cut	OFF/ON	-	-

         
         Powertrain > Engine and ECT > Data List

         Tester Display
         Immobiliser Fuel Cut

      OK
      OFF is displayed after the engine is started.

      Result
      Result Proceed to OK (for 3ZR-FAE) A OK (for 8NR-FTS) B NG C

   
   

   A

   GO TO SFI SYSTEM Click here

   B

   GO TO SFI SYSTEM Click here

   C

4. CHECK WHETHER ENGINE STARTS

   
   

   1. Using a registered key, turn the ignition switch to ON.

   2. Check that the engine starts 5 seconds after the ignition switch was turned to ON.

      OK
      Engine starts normally.

      Result
      Result Proceed to Engine can be started A Engine cannot be started B

   
   

   A

   USE SIMULATION METHOD TO CHECK Click here

   B

5. CHECK ECM (TERMINAL IMI)

   
   

   1. Using an oscilloscope, check the waveform

      

      *a

      Component with harness connected (ECM)

      *b

      Waveform

      Measurement Condition

      Item	Content
      Tester Connection	A38-28 (IMI) - Body ground
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Ignition switch ON

      Result
      Result Proceed to Normal waveform A Waveform not output, or has abnormal wavelength or shape B

   
   

   B

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

   A

6. CHECK ECM (TERMINAL IMO)

   
   

   1. Using an oscilloscope, check the waveform

      

      *a

      Component with harness connected (ECM)

      *b

      Waveform

      Measurement Condition

      Item	Content
      Tester Connection	A38-45 (IMO) - Body ground
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Within 3 seconds of the ignition switch first being turned to ON after cable is disconnected and reconnected to the negative (-) battery terminal

      Result
      Result Proceed to Normal waveform A Waveform not output, or has abnormal wavelength or shape (for 3ZR-FAE) B Waveform not output, or has abnormal wavelength or shape (for 8NR-FTS) C

   
   

   B

   REPLACE ECM Click here

   C

   REPLACE ECM Click here

   A

7. REGISTER ECU COMMUNICATION ID

   
   

   1. Register the communication ID between the transponder key ECU assembly and ECM.

      Tech Tips

      Refer to Service Bulletin.

      Result
      Proceed to NEXT

   
   

   NEXT

8. CHECK WHETHER ENGINE STARTS

   
   

   1. Using a registered key, turn the ignition switch to ON.

   2. Check that the engine starts 5 seconds after the ignition switch was turned to ON.

      OK
      Engine starts normally.

      Result
      Result Proceed to Engine can be started A Engine cannot be started B

   
   

   A

   END (REGISTERED COMMUNICATION ID WAS DEFECTIVE)

   B

9. REPLACE TRANSPONDER KEY ECU ASSEMBLY

   
   

   1. Replace the transponder key ECU assembly with a new one.

      Tech Tips

      Refer to Service Bulletin.

      Note

      Key ID code registration is necessary when replacing the transponder key ECU assembly.

      Refer to Service Bulletin.

      Result
      Proceed to NEXT

   
   

   NEXT

10. CHECK WHETHER ENGINE STARTS

    
    

    1. Using a registered key, turn the ignition switch to ON.

    2. Check that the engine starts 5 seconds after the ignition switch was turned to ON.

       OK
       Engine starts normally.

       Result
       Result Proceed to OK A NG (for 3ZR-FAE) B NG (for 8NR-FTS) C

    
    

    A

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO SFI SYSTEM Click here

11. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - ECM)

    
    

    1. Disconnect the F22 transponder key ECU assembly connector

    2. Disconnect the A38 ECM connector

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

       Standard Resistance
       Tester Connection Condition Specified Condition F22-13 (EFIO) - A38-28 (IMI) Always Below 1 Ω F22-13 (EFIO) - Body ground Always 10 kΩ or higher A38-28 (IMI) - 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