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

DESCRIPTION

If the key ID codes of the door control transmitter assembly 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

CAUTION / NOTICE / HINT

PROCEDURE

1. CLEAR DTC

   
   

   1. Clear the DTCs.

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

      Result
      Proceed to NEXT

   
   

   NEXT

2. CHECK FOR DTC

   
   

   1. Check for DTCs.

      
      Body Electrical > Immobiliser > Trouble Codes
      Powertrain > Engine > 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 and ECT / Data List.

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

      
      Powertrain > Engine > Data List

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

      
      Powertrain > Engine > Data List

      Tester Display
      Immobiliser Fuel Cut

      OK
      OFF is displayed after the engine is started.

      Result
      Proceed to OK NG

   
   

   OK

   GO TO SFI SYSTEM for 1AR-FE: Click here GO TO SFI SYSTEM for 2GR-FE: Click here

   NG

4. CHECK WHETHER ENGINE STARTS

   
   

   1. Using a registered door control transmitter assembly, 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	for 1AR-FE	*B	for 2GR-FE
      *a	Component with harness connected (ECM)	*b	Waveform 1
      *c	Waveform 2	-	-

      OK

      Tester Connection	Condition	Tool Setting	Specified Condition
      A43-28 (IMI) - Body ground*1	Ignition switch ON	2 V/DIV., 500 ms./DIV.	Pulse generation (See waveform)
      A43-31 (IMI) - Body ground*2

      
      

      • *1: for 1AR-FE

      • *2: for 2GR-FE

      Result
      Result Proceed to Normal waveform A Waveform 1 not output, or has abnormal wavelength or shape B Waveform 2 not output, or has abnormal wavelength or shape C

   
   

   B

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

   C

   REPLACE TRANSPONDER KEY ECU ASSEMBLY Click here

   A

6. CHECK ECM (TERMINAL IMO)

   
   

   1. Using an oscilloscope, check the waveform.

      

      *A	for 1AR-FE	*B	for 2GR-FE
      *a	Component with harness connected (ECM)	*b	Waveform

      OK

      Tester Connection	Condition	Tool Setting	Specified Condition
      A43-29 (IMO) - Body ground*1	Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal	2 V/DIV., 500 ms./DIV.	Pulse generation (See waveform)
      A43-30 (IMO) - Body ground*2

      
      

      • *1: for 1AR-FE

      • *2: for 2GR-FE

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

   
   

   B

   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 door control transmitter assembly, 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

   GO TO STEP 13 Click here

9. REPLACE ECM

   
   

   1. Temporarily replace the ECM with a new one.

      for 1AR-FE: Click here

      for 2GR-FE: Click here

      Result
      Proceed to NEXT

   
   

   NEXT

10. REGISTER ECU COMMUNICATION ID

    
    

    1. Reregister the ECU communication ID.

       Tech Tips

       Refer to Service Bulletin.

       Result
       Proceed to NEXT

    
    

    NEXT

11. CHECK WHETHER ENGINE STARTS

    
    

    1. Using a registered door control transmitter assembly, 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 (ECM WAS DEFECTIVE)

    NG

    GO TO SFI SYSTEM for 1AR-FE: Click here GO TO SFI SYSTEM for 2GR-FE: Click here

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

    
    

    1. Disconnect the F66 transponder key ECU assembly connector.

    2. Disconnect the A43 ECM connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition F66-13 (EFIO) - A43-28 (IMI)*1 Always Below 1 Ω F66-13 (EFIO) - A43-31 (IMI)*2 Always Below 1 Ω A43-28 (IMI) or F66-13 (EFIO) - Body ground*1 Always 10 kΩ or higher A43-31 (IMI) or F66-13 (EFIO) - Body ground*2 Always 10 kΩ or higher

       
       

       • *1: for 1AR-FE

       • *2: for 2GR-FE

       Result
       Proceed to OK NG

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

13. REPLACE TRANSPONDER KEY ECU ASSEMBLY

    
    

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

       Result
       Proceed to NEXT

    
    

    NEXT

14. CHECK WHETHER ENGINE STARTS

    
    

    1. Using a registered door control transmitter assembly, 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

    GO TO SFI SYSTEM for 1AR-FE: Click here GO TO SFI SYSTEM for 2GR-FE: Click here