Toyota 2-Pin Fuel Injector Connector | Blue, Brown, Black & Grey Female OEM
Toyota’s fuel injection systems use color-coded 2-pin injector connectors to identify individual cylinder injector circuits in the engine harness. This 2-pin female connector is available in four housing colors – Blue, Brown, Black, and Grey – matching Toyota’s OEM color-coding scheme for multi-cylinder injector harnesses. Each color corresponds to a specific cylinder position in the engine harness, preventing mis-mating during injector replacement or harness repair. Available bare or with 15cm pre-wired leads.
| Attribute | Detail |
|---|---|
| Pin Count | 2-Pin |
| Gender | Female |
| Housing Colors | Blue / Brown / Black / Grey |
| Housing Material | High-temp nylon (PA66), rated for injector proximity heat |
| Wire Option | Bare connector / 15cm pre-wired leads |
| Application | Fuel injector solenoid harness |
| Compatible Brands | Toyota, Lexus |
On Toyota 4-cylinder and 6-cylinder engines, the injector harness uses different connector colors for each cylinder position. This color coding serves two purposes: it prevents mis-mating during assembly (connecting cylinder 1’s injector to cylinder 3’s ECU circuit would cause severe misfires), and it allows technicians to quickly identify which cylinder’s injector circuit is being serviced. When replacing a corroded injector connector, always match the original housing color to maintain the OEM color-coding scheme. Mixing colors in a multi-cylinder harness creates a mis-mating risk during future service.
Toyota fuel injector connectors are mounted directly on the injector body in the intake manifold area, exposed to fuel spray, engine heat (up to 150°C at the injector body), and vibration. Over time, the connector housing becomes brittle from heat cycling, and the terminals oxidize from fuel vapor exposure. A degraded injector connector causes intermittent injector pulse faults, triggering P0201–P0206 (injector circuit open/short) and P0300–P0306 (cylinder misfire) fault codes. On Toyota Techstream, individual cylinder misfire counters will show elevated counts for the affected cylinder.
Always match the replacement connector color to the original OEM injector connector color for your specific cylinder position.
Q: What Toyota models use color-coded 2-pin injector connectors?
A: Color-coded 2-pin injector connectors are used on Toyota Camry, Corolla, RAV4, Hilux, Land Cruiser, and Lexus ES/IS/GS with multi-point fuel injection (MPI) and direct injection (GDI) systems. Cross-reference your vehicle’s wiring diagram to confirm the color for each cylinder position.
Q: What fault codes indicate a failed injector connector?
A: Common codes include P0201–P0206 (individual cylinder injector circuit open/short), P0300–P0306 (cylinder misfire), and elevated misfire counters on Toyota Techstream for the affected cylinder.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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2 Pin Connectors
