Toyota 1-Pin Switch Connector – OEM 90980-11738 / 11738 | 2.2mm Series Female

The OEM 90980-11738 is a Toyota 1-pin female connector in the 2.2mm series, used in switch harnesses, sensor circuits, and single-wire signal connections across a wide range of Toyota and Lexus vehicles. Nylon housing with precision-crimped terminal and rubber seal delivers reliable single-circuit continuity in demanding underhood and interior environments.

Key Specifications

Why Single-Pin Connectors Fail

Single-pin connectors in switch and sensor circuits are vulnerable to terminal push-back, corrosion from moisture ingress, and housing fatigue from repeated plug/unplug cycles. A failed 1-pin connector causes open-circuit faults, non-functional switches, or intermittent sensor signals that trigger P-codes or warning lights. Replacing the connector and terminal restores clean circuit continuity.

What’s Included

• 1x Female connector housing (OEM 90980-11738)
• 1x Matching terminal (pre-installed or loose)
• 1x Rubber seal for waterproofing

Installation Steps

1. Disconnect the vehicle battery
2. Locate the single-pin switch or sensor connector to be replaced
3. Use a terminal pick tool to release and extract the original terminal from the housing
4. Insert the terminal into the new 90980-11738 housing until it clicks
5. Reconnect the circuit and verify switch or sensor function

Frequently Asked Questions

Q: What Toyota models use OEM 90980-11738?
A: This connector is used across multiple Toyota and Lexus platforms in switch harnesses, door sensors, and single-wire signal circuits. Cross-reference your vehicle’s wiring diagram to confirm fitment.

Q: Is the terminal included?
A: Yes. Each connector set includes the housing, terminal, and seal as a complete replacement kit.

Q: What is the 2.2mm series?
A: The 2.2mm series refers to the terminal pitch (contact spacing). This is a Toyota-standard series used in low-current signal and switch circuits.

Q: Can this be used for a ground circuit?
A: Yes, single-pin connectors are used for both signal and ground circuits. Verify the wire gauge matches the terminal rating.

Q: Is this waterproof?
A: The rubber seal provides moisture resistance suitable for underhood and door panel environments.

Compatible Applications

• Toyota Camry, Corolla, RAV4 – Switch harness connectors
• Toyota Hilux, Land Cruiser – Sensor signal circuits
• Toyota Prius – Low-current switch connectors
• Lexus ES, IS, GS – Interior switch and sensor wiring
• Universal Toyota 2.2mm series single-pin applications