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 844 (COMBINATION SWITCH CONTROL SYSTEM - DIAGNOSIS)TERMINALS OF ECU
2004 Toyota Matrix XR, FWD, Standard
Terminals Of Ecu
2004 Toyota Matrix XR, FWD, StandardSECTION Terminals Of Ecu
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
TERMINALS OF ECU
| Terminal No. (Symbols) | Wiring color | Condition | STD voltage (V) |
|---|---|---|---|
| C14-1 - C14-8 (B-E) | R-B - W-B | Constant | 10 - 14 V |
| C14-2 - C14-8 (IG-E) | R-L - W-B | Ignition switch OFF or ACC | Below 1 V |
| Ignition switch ON | 10 - 14 V | ||
| C14-3 (2S) | W-G | Wiper and washer switch communication circuit | - |
| C14-4 (HEAD) | R-W | Light control switch communication circuit | - |
| C14-8 - Body ground (E - Body ground) | W-B - Body ground | Constant | Below 1 V |
| C14-9 (MPX1) | V-G | Multiplex communication circuit | - |
| C14-1O (MPX2) | V-G | Multiplex communication circuit | - |
RENDER: 1.0x
NO RELATED
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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.