Toyota 4-Pin EPS Electronic Power Steering Connector – OEM | Camry Corolla RAV4
Direct OEM-specification replacement for the Toyota 4-pin connector used on EPS (Electronic Power Steering) motor and torque sensor harnesses. Used across Toyota petrol and hybrid platforms where the EPS system replaces hydraulic power steering. Available bare or with 15cm pre-wired leads.
| Pin | Function | Failure Symptom if Corroded |
|---|---|---|
| 1 | +12V power supply to EPS motor / ECU | EPS completely inactive, heavy steering |
| 2 | Ground (KL31) | EPS warning light, intermittent assist |
| 3 | Torque sensor signal A (steering input) | C1511 — EPS torque sensor circuit fault |
| 4 | Torque sensor signal B (redundant) | C1513 — EPS torque sensor signal mismatch |
| Attribute | Detail |
|---|---|
| Pin Count | 4-Pin |
| Housing Material | High-temp nylon (PA66), waterproof sealed |
| Wire Option | Bare connector / 15cm pre-wired leads |
| Application | EPS motor harness, EPS torque sensor harness |
| Compatible Brands | Toyota, Lexus |
| Code | Description |
|---|---|
| C1511 | EPS torque sensor — circuit malfunction |
| C1513 | EPS torque sensor — signal mismatch (A vs B) |
| C1515 | EPS motor — circuit malfunction |
Q: My Toyota steering is heavy and has a C1511 code — is it the connector?
A: C1511 (EPS torque sensor circuit fault) on Toyota is frequently caused by a corroded 4-pin EPS connector rather than a failed torque sensor or EPS ECU. Inspect the connector before replacing the EPS assembly, which is significantly more expensive.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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4 Pin Connectors
