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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 67 (Hybrid Control System (AWD) - Diagnostic Codes (1 Of 6)) >> HYBRID CONTROL SYSTEM (for AWD) >> DTC C1348-00: Different Diameter Tire [12/2019 - 11/2023] >> Procedure

DTC C1348-00: Different Diameter Tire [12/2019 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK TIRES 
    1. Check the tire sizes to ensure that the front and rear tire sizes are not different.

      Refer to INSPECTION [12/2019 - ]

      HINT: 

      If different tire sizes are discovered, replace the tires so that the tire sizes are the same on all 4 wheels.

    2. Adjust the air pressure in the tires.

      Refer to INSPECTION [12/2019 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. RECONFIRM DTC 
    1. Clear the DTCs.

      Powertrain > Hybrid Control > Clear DTCs 

    2. Drive the vehicle at a speed of 30 km/h (19 mph) or more.
    3. Check if the same DTC is output.

      Powertrain > Hybrid Control > Trouble Codes 

    4. Check that no speed sensor DTCs are output.

      Chassis > Brake/EPB > Trouble Codes 

      HINT: 

      Result

      Result Proceed to
      DTC C1348-00 and speed sensor DTC are not output. A
      Speed sensor DTC is output. B
      DTC C1348-00 is output. C

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023] 

    Result: 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]