IMMOBILISER SYSTEM(w/o Entry and Start System) Engine does not Start because No Initial Combustion

DESCRIPTION

• When a key is inserted into the ignition key cylinder, the transponder key coil receives the key ID code and sends it to the transponder key ECU assembly.

• If an error in communication between the transponder key coil and transponder key ECU assembly occurs, this symptom may occur.

WIRING DIAGRAM

Refer to "System Diagram".

Click here

CAUTION / NOTICE / HINT

PROCEDURE

1. CLEAR DTC

   
   

   1. Clear the DTCs.

      
      Body Electrical > Immobiliser > Clear DTCs
      

      1. for 8NR-FTS:

         
         Powertrain > Engine > Clear DTCs

      2. for 3ZR-FAE:

         
         Powertrain > Engine and ECT > Trouble Codes

      Result
      Proceed to NEXT

   
   

   NEXT

2. CHECK FOR DTC

   
   

   1. Check for DTCs.

      
      Body Electrical > Immobiliser > Trouble Codes

      Tech Tips

      Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.

      
      

      1. for 8NR-FTS:

         
         Powertrain > Engine > Trouble Codes

      2. for 3ZR-FAE:

         
         Powertrain > Engine and ECT > Trouble Codes

      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 / Data List.

   5. Read the Data List according to the display on the GTS.

      
      

      1. for 8NR-FTS:

         
         Powertrain > Engine > Data List

         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 SECURITY INDICATOR LIGHT OPERATION

   
   

   1. Check that the security indicator light turns off when a registered key is inserted into the ignition key cylinder.

      OK
      Security indicator light turns OFF.

      Result
      Proceed to OK NG

   
   

   OK

   GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS Click here

   NG

5. CHECK SECURITY INDICATOR LIGHT OPERATION

   
   

   1. Check that the security indicator light turns off when another registered key is inserted into the ignition key cylinder.

      OK
      Security indicator light turns OFF.

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE TRANSPONDER KEY COIL Click here

   OK

6. CHECK WHETHER ENGINE STARTS

   
   

   1. Using another 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

   GO TO STEP 11 Click here

   B

   GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS Click here

7. REPLACE TRANSPONDER KEY COIL

   
   

   1. Replace the transponder key coil.

      Click here

      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 (TRANSPONDER KEY COIL 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 Engine can be started A Engine cannot be started B

    
    

    A

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    B

11. REPLACE KEY

    
    

    1. Replace the key.

       Note

       Key ID code registration is necessary when replacing the key.

       Refer to Service Bulletin.

       Result
       Proceed to NEXT

    
    

    NEXT

12. 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 (for 3ZR-FAE) B Engine cannot be started (for 8NR-FTS) C

    
    

    A

    END (KEY WAS DEFECTIVE)

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO SFI SYSTEM Click here