Toyota / Lexus 1-Pin 2.2mm Starter Motor Waterproof Connector – OEM 90980-11400 / 6189-0413
Direct OEM-specification replacement for the Sumitomo 1-pin waterproof wire harness connector used on starter motor control circuits across Toyota and Lexus platforms. Cross-references Sumitomo / Toyota OEM part numbers 90980-11400 and 6189-0413. Uses the 2.2mm contact series in black nylon and rubber housing with waterproof sealing — the single-pin connector carries the ignition switch signal to the starter motor solenoid, triggering engine cranking when the key is turned or the start button is pressed.
The 1-pin starter motor connector is located on the starter motor solenoid, in the engine bay near the transmission bell housing. It is exposed to heat, vibration, and moisture. A failed connector causes a no-start condition — the engine will not crank when the ignition key is turned or the start button is pressed, even though the battery is fully charged. This is a common misdiagnosis: the starter motor and battery are replaced before the single-pin connector is inspected. A corroded or open 1-pin starter connector is a quick and inexpensive fix for a no-start fault.
| OEM Number | Application |
|---|---|
| 90980-11400 | Toyota 1-pin starter motor connector (primary) |
| 6189-0413 | Sumitomo 1-pin starter motor connector (alternate) |
| Pin | Function | Failure Symptom if Open |
|---|---|---|
| 1 | Ignition switch signal to starter solenoid (12V when cranking) | No-start — engine will not crank |
| Attribute | Detail |
|---|---|
| Pin Count | 1-Pin |
| Contact Series | 2.2mm pitch (Sumitomo series) |
| Housing Material | Nylon and rubber (waterproof) |
| Housing Colour | Black |
| Sealing | Waterproof |
| OEM Part Numbers | 90980-11400 / 6189-0413 |
| Applications | Starter motor solenoid control circuit |
| Compatible Models | Toyota Corolla / Camry / RAV4 / Hilux / Land Cruiser; Lexus IS / GS / RX / LS |
| Terminal Included | Yes |
Q: My Toyota will not crank at all — battery is good, could it be the starter connector?
A: Yes. A corroded or open 1-pin starter motor connector is a common cause of no-crank, no-start faults on Toyota and Lexus vehicles. Test for 12V at the starter solenoid terminal when the key is in the crank position — if there is no voltage, trace back to the 1-pin connector (OEM 90980-11400) before replacing the starter motor.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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