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

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use this procedure to troubleshoot the immobiliser system.

  • *: Use the GTS.

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 engine 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.

      Tech Tips

      A simple method to determine whether the battery is discharged is to operate the horn.

      Result
      Proceed to
      NEXT

    NEXT
  4. TURN ENGINE SWITCH ON (IG)

    Tech Tips

    When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

    Result
    Proceed to
    NEXT

    NEXT
  5. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


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


      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output (for LHD without Central Gateway ECU) B
      CAN DTC is output (for RHD without Central Gateway ECU) C
      CAN DTC is output (for LHD with Central Gateway ECU) D
      CAN DTC is output (for RHD with Central Gateway ECU) E

    B
    C
    D
    E
    A
  6. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Use the GTS, check for LIN communication system DTCs.

      Click here

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

    B
    A
  7. CHECK FOR DTC*


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

      Click here


      Body Electrical > Entry&Start > Trouble Codes
      Powertrain > Engine > Trouble Codes
    2. Based on the DTCs output above, proceed to each diagnostic procedure.

      Result
      Result Proceed to
      DTCs are not output A
      SFI system DTCs are output (for 2TR-FE) B
      ECD system DTCs are output (for 2KD-FTV) C
      ECD system DTCs are output (for 1GD-FTV) D
      ECD system DTCs are output (for 1GD-FTV (w/ DPF)) E
      ECD system DTCs are output (for 1GD-FTV (w/o EGR System)) F
      ECD system DTCs are output (for 1GD-FTV (w/o EGR Cooler)) G
      ECD system DTCs are output (for 2GD-FTV) H
      ECD system DTCs are output (for 2GD-FTV (w/ DPF)) I
      ECD system DTCs are output (for 2GD-FTV (w/ Urea SCR System)) J
      ECD system DTCs are output (for 2GD-FTV (w/o EGR Cooler)) K
      ECD system DTCs are output (for 2GD-FTV (w/o EGR System)) L
      SFI system DTCs are output (for 1GR-FE) M
      Steering lock system DTCs are output N
      Immobiliser system DTCs are output O

    B
    C
    D
    E
    F
    G
    H
    I
    J
    K
    L
    M
    N
    O
    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
    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 certification ECU (smart key ECU assembly), ECM, ID code box (immobiliser code ECU)* or electrical key transmitter sub-assembly are replaced, refer to Service Bulletin.


    • *: w/ ID Code Box (Immobiliser Code ECU)

    Result
    Proceed to
    NEXT

    NEXT
  11. CHECK FOR DTC*


    1. Clear the DTCs.

      Click here


      Body Electrical > Entry&Start > Clear DTCs
      Powertrain > Engine > Clear DTCs
    2. Check for DTCs.

      Click here


      Body Electrical > Entry&Start > 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
      Immobiliser system DTCs are output B

    A
    B