Toyota / Mazda / Auman 4-Pin 2.2mm A/C Pressure Sensor Waterproof Connector – OEM 6189-0647 / 90980-10934
Direct OEM-specification replacement for the Sumitomo 4-pin waterproof wire harness connector used on air conditioning (A/C) pressure sensors across Toyota, Mazda, and Auman (FAW) platforms. Cross-references Sumitomo / Toyota OEM part numbers 6189-0647 and 90980-10934. Uses the 2.2mm contact series in black nylon and rubber housing with waterproof sealing.
A failed A/C pressure sensor connector causes the ECM to disable the A/C compressor as a safety measure when pressure sensor data is lost, resulting in no cold air. This is frequently misdiagnosed as a refrigerant leak or compressor failure before the connector is inspected.
| OEM Number | Application |
|---|---|
| 6189-0647 | Sumitomo 4-pin A/C pressure sensor connector (primary) |
| 90980-10934 | Toyota OEM cross-reference |
| Pin | Function | Failure Symptom if Open |
|---|---|---|
| 1 | 5V reference supply from ECM | Sensor inoperative, A/C compressor disabled |
| 2 | Ground / earth | Sensor inoperative |
| 3 | Pressure signal output to ECM | A/C compressor shut down, no cold air |
| 4 | Temperature signal (combined sensor variants) | A/C system fault |
| Attribute | Detail |
|---|---|
| Pin Count | 4-Pin |
| Contact Series | 2.2mm pitch (Sumitomo series) |
| Housing Material | Nylon and rubber (waterproof) |
| Housing Colour | Black |
| OEM Part Numbers | 6189-0647 / 90980-10934 |
| Applications | A/C pressure sensor, A/C pressure switch, refrigerant pressure transducer |
| Compatible Models | Toyota Corolla / Camry / RAV4 / HiAce; Mazda 3 / 6 / CX-5 / CX-7; Auman (FAW) trucks |
| Terminal Included | Yes |
Q: My Toyota A/C stopped working and the compressor clutch is not engaging — could it be the pressure sensor connector?
A: Yes. Inspect the connector before recharging the refrigerant or replacing the compressor.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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4 Pin Connectors
