IMMOBILISER SYSTEM(w/o Smart 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

*a	Transponder Key Coil
*b	Transponder Key ECU Assembly

CAUTION / NOTICE / HINT

PROCEDURE

1. CLEAR DTC

   
   

   1. Clear the DTCs.

      Click here

      
      Powertrain > Engine > Clear DTCs
      Body Electrical > Immobiliser > Clear DTCs

      Result
      Proceed to NEXT

   
   

   NEXT

2. CHECK FOR DTC

   
   

   1. Check for DTCs.

      Click here

      
      Body Electrical > Immobiliser > Trouble Codes
      Powertrain > Engine > Trouble Codes

      Tech Tips

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

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

   
   

   B

   GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

   A

3. 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

4. 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

5. 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
      Proceed to OK NG

   
   

   OK

   GO TO STEP 12 Click here

   NG

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

6. REPLACE TRANSPONDER KEY COIL

   
   

   1. Replace the transponder key coil.

      Click here

      Result
      Proceed to NEXT

   
   

   NEXT

7. 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

8. REPLACE TRANSPONDER KEY ECU ASSEMBLY

   
   

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

      Tech Tips

      Refer to Service Bulletin.

      Result
      Proceed to NEXT

   
   

   NEXT

9. REGISTER KEY

   
   

   1. Register the key.

      Tech Tips

      Refer to Service Bulletin.

      Result
      Proceed to NEXT

   
   

   NEXT

10. REGISTER ECU COMMUNICATION ID

    
    

    1. Register the ECU communication ID.

       Tech Tips

       Refer to Service Bulletin.

       Result
       Proceed to NEXT

    
    

    NEXT

11. 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
       Proceed to OK NG

    
    

    OK

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    NG

12. 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

13. 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
       Proceed to OK NG

    
    

    OK

    END (KEY WAS DEFECTIVE)

    NG

    GO TO ECD SYSTEM Click here