IMMOBILISER SYSTEM(w/o Smart Entry and Start System) HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

   Result
   Proceed to NEXT

   
   

   NEXT

2. CUSTOMER PROBLEM ANALYSIS

   Tech Tips

   
   

   • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

   • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

   • The following 5 items are important points for problem analysis:

     What	Vehicle model, system name
     When	Date, time, occurrence frequency
     Where	Whether the problem occurs at a specific location
     Under what conditions?	Whether the doors were locked or unlocked, whether the ignition switch was on, whether the engine was running
     How did it happen?	Problem symptoms

   Result
   Proceed to NEXT

   
   

   NEXT

3. INSPECT BATTERY VOLTAGE

   
   

   1. Measure the battery voltage.

      Standard Voltage
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

      Result
      Proceed to NEXT

   
   

   NEXT

4. CRANK ENGINE FOR MORE THAN 10 SECONDS

   Result
   Proceed to NEXT

   
   

   NEXT

5. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

   
   

   1. Using the GTS, check for CAN communication system DTCs.

      Click here

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

   
   

   B

   GO TO CAN COMMUNICATION SYSTEM Click here

   A

6. CHECK FOR DTC* (ECM)

   
   

   1. Check for DTCs and note any codes that are output.

      
      Powertrain > Engine and ECT > Trouble Codes
      Powertrain > Engine > Trouble Codes

      Tech Tips

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

      Result
      Result Proceed to DTCs are not output A SFI system DTCs are output B Immobiliser system DTCs are output C

   
   

   B

   GO TO DIAGNOSTIC TROUBLE CODE CHART for 1AR-FE: Click here GO TO DIAGNOSTIC TROUBLE CODE CHART for 2GR-FKS: Click here

   C

   GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

   A

7. CHECK FOR DTC* (TRANSPONDER KEY ECU ASSEMBLY)

   
   

   1. Check for DTCs and note any codes that are output.

      
      Body Electrical > Immobiliser > Trouble Codes

      Tech Tips

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

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

   
   

   B

   GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

   A

8. PROBLEM SYMPTOMS TABLE

   
   

   1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to Fault is not listed in Problem Symptoms Table A Fault is listed in Problem Symptoms Table B

   
   

   B

   GO TO STEP 10 Click here

   A

9. OVERALL ANALYSIS AND TROUBLESHOOTING*

   
   

   1. Data List / Active Test

      Click here

   2. Terminals of ECU

      Click here

      Result
      Proceed to NEXT

   
   

   NEXT

10. REPAIR OR REPLACE

    Tech Tips

    If the transponder key ECU assembly, ECM, or door control transmitter assembly are replaced, refer to Service Bulletin.

    Result
    Proceed to NEXT

    
    

    NEXT

11. CHECK FOR DTC*

    
    

    1. Clear the DTCs.

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

    2. Check for DTCs.

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

       Tech Tips

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

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

    
    

    A

    END

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here