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.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (AUTOMATIC TRANSMISSION ELECTRONIC CONTROLLED (ECT) - U341F - DIAGNOSTICS)PART AND SYSTEM NAME LIST
2004 Toyota Matrix XR, FWD, Standard
Part And System Name List
2004 Toyota Matrix XR, FWD, StandardSECTION Part And System Name List
WARNING: This page is about a different variant/trim than selected.
This reference list indicates the part names used in this manual along with their definitions.
SYSTEM PARTS DEFINITION
| Part and system name | Definition |
|---|---|
| Toyota HCAC system, Hydrocarbon adsorptive Catalyst (HCAC) system, HC adsorptive three-way catalyst | HC adsorptive three-way catalytic converter |
| Variable Valve Timing sensor, VVT sensor | Camshaft position sensor |
| Variable valve timing system, VVT system | Camshaft timing control system |
| Camshaft timing oil control valve, Oil control valve OCV, VVT, VSV | Camshaft timing oil control valve |
| Variable timing and lift, VVTL | Camshaft timing and lift control |
| Crankshaft position sensor "A" | Crankshaft position sensor |
| Engine speed sensor | Crankshaft position sensor |
| THA | Intake air temperature |
| Knock control module | Engine knock control module |
| Knock sensor | Engine knock sensor |
| Mass or volume air flow circuit | Mass air flow sensor circuit |
| Vacuum sensor | Manifold air pressure sensor |
| Internal control module, Control module, Engine control ECU, PCM | Power train control module |
| FC idle | Deceleration fuel cut |
| Idle air control valve | Idle speed control |
| VSV for CCV, Canister close valve VSV for canister control | Evaporative emissions canister vent valve |
| VSV for EVAP, Vacuum switching valve assembly No. 1, EVAP VAV, Purge VSV | Evaporative emissions canister purge valve |
| VSV for pressure switching valve, Bypass VSV | Evaporative emission pressure switching valve |
| Vapor pressure sensor, EVAP pressure sensor, Evaporative emission control system pressure sensor | Fuel tank pressure sensor |
| Charcoal canister | Evaporative emissions canister |
| ORVR system | On-boad refueling vapor recovery system |
| Intake manifold runner control | Intake manifold tuning system |
| Intake manifold runner valve, IMRV, IACV (runner valve) | Intake manifold tuning valve |
| Intake control VSV | Intake manifold tuning solenoid valve |
| AFS | Air fuel ratio sensor |
| O2 sensor | Heater oxygen sensor |
| Oxygen sensor pumping current circuit | Oxygen sensor output signal |
| Oxygen sensor reference ground circuit | Oxygen sensor signal ground |
| Accel position sensor | Accelerator pedal position sensor |
| Throttle actuator control motor, Actuator control motor, Electronic throttle motor, Throttle control motor | Electronic throttle actuator |
| Electronic throttle control system, Throttle actuator control system | Electronic throttle control system |
| Throttle/pedal position sensor, Throttle/pedal position switch, Throttle position sensor/switch | Throttle position sensor |
| Turbo press sensor | Turbocharger pressure sensor |
| Turbo VSV | Turbocharger pressure control solenoid valve |
| P/S pressure switch | Power-steering pressure switch |
| VSV for ACM | Active control engine mount |
| Speed sensor, Vehicle speed sensor "A", Speed sensor for skid control ECU | Vehicle speed sensor |
| ATF temperature sensor, Trans. fluid temp. sensor, ATF temperature sensor "A" | Transmission fluid temperature sensor |
| Electronic controlled automatic transmission, ECT | Electronically controlled automatic |
| Intermediate shaft speed sensor "A" | Counter gear speed sensor |
| Output speed sensor | Output shaft speed sensor |
| Input speed sensor, Input turbine speed sensor "A", Speed sensor (NT), Turbine speed sensor | Input turbine speed sensor |
| PNP switch, NSW | Park/neutral position switch |
| Pressure control solenoid | Transmission pressure control solenoid |
| Shift solenoid | Transmission shift solenoid valve |
| Transmission control switch, Shift lock control unit | Shift lock control module |
| Engine immobilizer system, Immobilizer system | Vehicle anti-theft system |
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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.