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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sliding Roof - Diagnostics - Introduction - (Hybrid) >> Sliding Roof System >> How To Proceed With Troubleshooting [02/2014 - ] >> Procedure

How To Proceed With Troubleshooting [02/2014 - ]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result: 

    Go to next step 

  2. CUSTOMER PROBLEM ANALYSIS 

    HINT: 

    • 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 Road conditions
      Under what conditions? Driving conditions, weather conditions
      How did it happen? Problem symptoms

    Result: 

    NEXT 

    Go to next step 

  3. PRE-CHECK 
    1. Measure the auxiliary battery voltage with the power switch off.

      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.

    2. Check the fuses and relays.
    3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

    Result: 

    NEXT 

    Go to next step 

  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Using the Techstream, check for CAN communication system DTCs.

      Refer to DIAGNOSIS SYSTEM [02/2014 - 11/2016] .

      Refer to DIAGNOSIS SYSTEM [11/2016 - ] .

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

    Result: 

    GO TO CAN COMMUNICATION SYSTEM: 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - 11/2016] .

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] .

    Result: 

    Go to next step 

  5. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* 
    1. Using the Techstream, check for LIN communication system DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - 11/2016] .

      Refer to DTC CHECK / CLEAR [11/2016 - ] .

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

    Result: 

    GO TO LIN COMMUNICATION SYSTEM: 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - ] .

    Result: 

    Go to next step 

  6. CHECK FOR DTC* 
    1. Check for DTCs and make a note of any codes that are output.

      Refer to DTC CHECK / CLEAR [02/2014 - ] 

      Body Electrical > Sliding Roof > Trouble Codes 

    2. Clear the DTCs.

      Body Electrical > Sliding Roof > Clear DTCs 

    3. Recheck for DTCs.

      Body Electrical > Sliding Roof > Trouble Codes 

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

    Result: 

    GO TO DIAGNOSTIC TROUBLE CODE CHART: 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [02/2014 - ] 

    Result: 

    Go to next step 

  7. PROBLEM SYMPTOMS TABLE 
    1. Refer to Problem Symptoms Table.

      Refer to PROBLEM SYMPTOMS TABLE [02/2014 - ] 

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

    Result: 

    See step  9

    Result: 

    Go to next step 

  8. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Operation Check

      Refer to OPERATION CHECK [02/2014 - ] 

    2. Terminals of ECU

      Refer to TERMINALS OF ECU [02/2014 - ] 

    3. Data List / Active Test

      Refer to DATA LIST / ACTIVE TEST [02/2014 - ] 

    4. Inspection

      Refer to INSPECTION [02/2014 - ] .

    Result: 

    NEXT 

    Go to next step 

  9. ADJUST, REPAIR OR REPLACE 
    1. Check if the sliding roof ECU (sliding roof drive gear sub-assembly) has been replaced, or the sliding roof glass sub-assembly or sliding roof drive cable sub-assembly has been adjusted, or removed and installed.
      Result Proceed to
      The sliding roof ECU (sliding roof drive gear sub-assembly) has been replaced, or the sliding roof glass sub-assembly or sliding roof drive cable sub-assembly has been adjusted, or removed and installed A
      The sliding roof ECU (sliding roof drive gear sub-assembly) has not been replaced, and the sliding roof glass sub-assembly and sliding roof drive cable sub-assembly have not been adjusted, or removed and installed B

    Result: 

    See step  11

    Result: 

    Go to next step 

  10. INITIALIZE SLIDING ROOF SYSTEM 
    1. Initialize the sliding roof ECU (sliding roof drive gear sub-assembly).

      Refer to INITIALIZATION [02/2014 - ] 

    Result: 

    NEXT 

    Go to next step 

  11. CONFIRMATION TEST 

    Result: 

    NEXT 

    END