STEERING LOCK SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use the following procedures to troubleshoot the steering lock system.

  • *: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS


    1. Interview the customer and confirm the problem Click here.


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  3. CHECK AUXILIARY BATTERY VOLTAGE

    Standard Voltage
    11 to 14 V

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

    Tech Tips

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


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  4. CHECK DTC*


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

      Tech Tips

      When DTCs indicating CAN and/or LIN communication system malfunctions are output, repair the CAN and/or LIN communication systems before performing diagnosis (for CAN LHD: Click here, for CAN RHD Click here and/or Click here for LIN).

      Result
      Result Proceed to
      DTC is not output (problem symptom cannot be confirmed or reproduced). A
      DTC is not output (problem symptom can be confirmed and reproduced). B
      Steering lock system DTC is output. C

      Tech Tips


      • When steering lock system DTCs are output, refer to Diagnostic Trouble Code Chart Click here.

      • The steering lock system does not store past DTCs.


      B
      C
      A
  5. SYMPTOM SIMULATION


    1. Proceed to How to Proceed with Troubleshooting Click here.


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  6. PROBLEM SYMPTOMS TABLE


    1. Proceed 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
  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Proceed to Data List / Active Test Click here.

    2. Proceed to Terminals of ECU Click here.


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  8. CIRCUIT INSPECTION*


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  9. REPAIR OR REPLACE


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  10. CHECK DTC AGAIN*


    1. Clear the DTCs Click here.

    2. Check for DTCs and make a note of any codes that are output Click here.

      Tech Tips

      Perform the DTC output confirmation operation.

      Result
      Result Proceed to
      DTC is not output. A
      Steering lock system DTC is output. B

      B
      A