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 845 (STEERING PAD SWITCH 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.
ECU TERMINALS
| Symbols (Terminal No.) | Wiring Color | Condition | STD Voltage (V) |
|---|---|---|---|
| TLSW (C13-7) | P | Cellular mobile telephone communication circuit | - |
| +B - Body ground (C13-8 - Body ground) | G-W - Body ground | Constant | 10 - 14 V |
| MPX (C13-3) | V-G | Multiplex communication circuit | - |
| ECC - Body ground (C13-3 - Body ground) | BR - Body ground | Constant | Below 1 V |
| CCS - ECC (C13-2 - C13-3) | W-L - BR | Ignition switch ON | 10 - 14 V |
| Ignition switch ON CANCEL switch hold ON |
3.6 - 7.2 V | ||
| Ignition switch ON SET/COAST switch hold ON |
2.1 - 4.9 V | ||
| Ignition switch ON RES/ACC switch hold ON |
0.7 - 2.6 V | ||
| Ignition switch ON MAIN switch OFF |
10 - 14 V | ||
| Ignition switch ON MAIN switch ON |
Below 1 V | ||
| R/N - ECC (C13-4 - C13-3) | V - BR | Ignition switch ON MODE switch ON |
Below 1 V |
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.