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 CARSECTION 690 (AUTOMATIC TRANSMISSION ELECTRONIC CONTROLLED - U151E - 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 car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
This reference list indicates the part names used in this manual along with their definitions.
PART AND SYSTEM NAME
| 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-board 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.