Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Toyota Matrix Base, 4WDFACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
Warning Lights:
WARNING LIGHTS PROBLEM SYMPTOMS
| Symptom/Suspect Area | See | |
|---|---|---|
| Check Engine Warning Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. ECM | ..... | |
| 3. Combination Meter Assy | ..... | |
| Discharge Warning Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. ECM | ..... | |
| 3. Combination Meter Assy | ..... | |
| Brake Warning Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. Brake Actuator Assy | PRE-CHECK | |
| 3. Combination Meter Assy | ..... | |
| ABS Warning Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. Brake Actuator Assy | PRE-CHECK | |
| 3. Combination Meter Assy | ..... | |
| SRS Warning Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. Airbag Sensor Assy Center | DIAGNOSTICS | |
| 3. Combination Meter Assy | ..... | |
| Open Door Warning Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. Courtesy Lamp Switch | INSPECTION | |
| 3. Combination Meter Assy | ..... | |
| Fuel Level Warning Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. Fuel Sensor Gage Assy | DIAGNOSTICS | |
| 3. Combination Meter Assy | ..... | |
| Low Oil Pressure Warning Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. Oil Pressure Switch Assy | ON-VEHICLE INSPECTION | |
| 3. Combination Meter Assy | ..... | |
Indicator Lights:
INDICATOR LIGHTS PROBLEM SYMPTOMS
| Symptom/Suspect Area | See | |
|---|---|---|
| Turn Indicator Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. Turn Signal & Hazard Warning System | INSPECTION | |
| 3. Combination Meter Assy | ..... | |
| High Beam Indicator Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. Headlight Dimmer Switch | INSPECTION | |
| 3. Combination Meter Assy | ..... | |
| O/D OFF Indicator Light Does Not Light Up | ||
| 1. Wire Harness Or Connector | ..... | |
| 2. O/D Main Switch Circuit | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. ECM | ..... | |
| 4. Combination Meter Assy | ..... | |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.