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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 599 (LIGHTING SYSTEM - DIAGNOSIS)HOW TO PROCEED WITH TROUBLESHOOTING
2004 Toyota Matrix XR, FWD, Standard

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 2002 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. VEHICLE BROUGHT TO WORK SHOP 
    1. GO TO NEXT STEP 
  2. CUSTOMER PROBLEM ANALYSIS, See  CUSTOMER PROBLEM ANALYSIS CHECK  . 
    1. GO TO NEXT STEP 
  3. CHECK BODY MULTIPLEX COMMUNICATION SYSTEM, See  HOW TO PROCEED WITH TROUBLESHOOTING  . 
    1. Check that the DTC output.
    1. DTC OUTPUTS (PROCEED TO "BODY MULTIPLEX COMMUNICATION SYSTEM") 
    2. DTC DOES NOT OUTPUT (GO TO STEP 4) 
  4. PROBLEM SYMPTOM CONFIRMATION 
    1. SYMPTOM DOES NOT OCCUR (GO TO STEP 5) 
    2. SYMPTOM OCCURS (GO TO STEP   6 ) 
  5. SYMPTOM SIMULATION, SEE  BASIC DIAGNOSTIC PROCEDURES  . 
    1. GO TO NEXT STEP 
  6. DTC CHECK, SEE  PRE-CHECK  . 
    1. MALFUNCTION CODE (GO TO STEP 7) 
    2. NORMAL CODE (GO TO STEP   8 ) 
  7. DTC CHART, SEE  DIAGNOSTIC TROUBLE CODE CHART  . 
    1. GO TO STEP   9 
  8. PROBLEM SYMPTOMS TABLE, SEE  PROBLEM SYMPTOMS TABLE  . 
    1. GO TO NEXT STEP 
  9. CIRCUIT INSPECTION, SEE  DTC B1244 LIGHT SENSOR CIRCUIT MALFUNCTION   - 05-769. 
    1. GO TO NEXT STEP 
  10. TERMINAL OF ECU, SEE  TERMINALS OF ECU  . 
    1. GO TO NEXT STEP 
  11. INDEMNIFICATION OF PROBLEM 
    1. GO TO NEXT STEP 
  12. REPAIR OR REPLACE 
    1. GO TO NEXT STEP 
  13. CONFIRMATION TEST 
    1. GO TO NEXT STEP 
  14. 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.