How To Proceed With Troubleshooting

2004 Toyota Matrix XR, FWD, StandardSECTION How To Proceed With Troubleshooting
WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

The hand-held tester can be used at steps 3, 4, 6, and 9.

  1. Vehicle Brought to Workshop 
  2. Customer Problem Analysis (SEE  CUSTOMER PROBLEM ANALYSIS CHECK  ) 
  3. Connect the OBD II scan tool or hand-held tester to DLC3 
  4. Check and Clear DTC and Freeze Frame Data (SEE  DTC CHECK/CLEAR  ) 
  5. Visual Inspection 
  6. Setting the Check Mode Diagnosis (SEE  CHECK MODE PROCEDURE  ) 
  7. Problem Symptom Confirmation (SEE  ROAD TEST  ) 

    Symptom does not occur: Go to step 8 

    Symptom occur: Go to step   9 

  8. Symptom Simulation (SEE ) 
  9. DTC Check (SEE  DTC CHECK/CLEAR  ) 

    DTC is not output: Go to step 10 

    DTC is output: Go to step   18 

  10. Basic Inspection (SEE  ON-VEHICLE INSPECTION  ,  ADJUSTMENT  and  ADJUSTMENT  ) 

    NG: GO TO STEP   20 

    OK: Go to next step. 

  11. Mechanical System Test (SEE  MECHANICAL SYSTEM TESTS  ) 

    NG: GO TO NEXT STEP   17 

    OK: Go to next step. 

  12. Hydraulic Test (SEE  HYDRAULIC TEST  ) 

    NG: Go to step   17 

    OK: 

  13. Manual Shifting Test (SEE  MANUAL SHIFTING TEST  ) 

    NG: Go to next step   15 

    OK: 

  14. Problem Symptoms Table Chapter 1 (SEE  PROBLEM SYMPTOMS TABLE  ) 

    NG: Go to step   19 

    OK: 

  15. Problem Symptoms Table Chapter 2 (SEE  PROBLEM SYMPTOMS TABLE  ) 

    NG: Go to next step. 

  16. Part Inspection 

    Go to step   20 

  17. DTC Chart (SEE  DIAGNOSTIC TROUBLE CODE CHART  ) 
  18. Circuit Inspection 
  19. Identification of Problem 
  20. Repair 
  21. Confirmation Test 

    End 

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.