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Toyota Supra Fuel Filler Door Lock Actuator Connectors

Toyota Supra Fuel filler door lock actuator connectors

Starting at $51.95, AutoBuffy stocks 1 fuel filler door lock actuator connectors from Standard Ignition. This connector is the wiring harness plug that delivers power and signal to the actuator motor controlling your Toyota Supra's locking fuel door. When it corrodes, cracks, or loses continuity, the actuator stops receiving commands — leaving the fuel door stuck locked or permanently unlatched.

Signs your Toyota Supra needs a new fuel filler door lock actuator connector

  • Fuel door fails to unlatch when you press the release button or use the key fob, even though the actuator itself is undamaged
  • Fuel door unlocks intermittently — works sometimes but not consistently, often depending on temperature or vibration
  • Actuator makes no click or motor noise when commanded, indicating it is receiving no power through the connector
  • Visible corrosion, melted plastic, or spread terminal pins at the connector plug near the fuel door assembly
  • A stored trouble code or body control module fault pointing to an open circuit or short in the fuel door actuator circuit
  • Fuel door locks and unlocks on its own or at random, caused by an intermittent short within the damaged connector

Which fuel filler door lock actuator connector should you buy for your Toyota Supra?

The main decision is whether to buy an OEM-spec pigtail connector, a universal repair connector, or a complete connector-and-harness assembly. Fit and terminal type are critical — the wrong pin count or connector housing style will not seat properly and can cause an open circuit. Match the original by terminal count, wire gauge, and connector body style before ordering.

OEM-spec pigtail connector
Best for
Owners who want a direct plug-in replacement with factory fit and finish
What you get
Exact terminal count and housing profile, pre-crimped wires, no splicing required
Universal repair connector kit
Best for
Budget repairs where an exact-match pigtail is unavailable or backordered
What you get
Generic housing with matching terminal count, bare wire leads for splicing, and weatherproof sealing
Connector with short harness lead
Best for
Cases where the damage extends a few inches up the wiring rather than just the plug itself
What you get
Pre-terminated pigtail with extra wire length to reach past corroded or melted sections
Complete actuator and connector assembly
Best for
High-mileage vehicles where both the actuator motor and connector show wear simultaneously
What you get
New actuator motor bundled with a fresh connector and wiring, eliminating two failure points at once

Fuel filler door lock actuator connectors brands we stock for your Toyota Supra

Standard Ignition
1 option · from $51.95

Replacing a fuel filler door lock actuator connector on a Toyota Supra

Easy⏱ 30–60 minutesMultimeter (for circuit testing before and after)Wire stripper and crimping toolWeatherproof heat-shrink butt connectors or solder and heat gunTrim removal tool (to access inner fuel door panel if needed)Electrical contact cleaner

Begin by disconnecting the battery negative terminal, then access the fuel door actuator through the trunk liner or inner quarter panel trim using a trim removal tool. Unplug the damaged connector, cut the wiring a few inches behind the fault, and splice the new pigtail connector in place using weatherproof crimp connectors or soldered heat-shrink joints. Reconnect the battery, test the fuel door release function, and clear any stored codes before reassembling the trim.

Frequently asked questions

How much does it cost to replace fuel filler door lock actuator connectors on a Toyota Supra?
Parts start at $51.95 at AutoBuffy. A standalone pigtail connector is the least expensive route. If you add shop labor — typically a short electrical diagnostic plus 30–60 minutes of installation — total cost rises depending on local rates. DIY replacement keeps the job to just the part cost.
Can a bad actuator connector cause the fuel door to stay permanently locked on a Toyota Supra?
Yes. When the connector loses continuity — due to corrosion, a cracked housing, or a spread terminal pin — the actuator motor receives no power or signal. The result is a fuel door that will not respond to the release button or key fob command, leaving it locked until the connector is repaired or replaced.
Is the fuel filler door lock actuator connector the same as the actuator itself on a Toyota Supra?
No, they are separate components. The actuator is the small electric motor that physically moves the locking pin. The connector is the wiring plug that delivers power and control signals to that motor. Either part can fail independently, so diagnosing which one is at fault before ordering saves time and money.
How do I tell if the connector is bad versus the actuator motor being bad on a Toyota Supra?
Disconnect the connector and use a multimeter to test for battery voltage at the harness side when the release is triggered. Voltage present but actuator not moving points to a failed motor. No voltage at the connector pins points to the connector or upstream wiring. Visual inspection for corrosion and spread pins also helps isolate the fault quickly.
Do I need to splice wires when replacing the fuel filler door lock actuator connector on a Toyota Supra?
It depends on the connector style you buy. An OEM-spec pigtail typically splices into the existing harness using solder or crimp connectors a few inches back from the damaged plug — no complicated rewiring required. Some complete assemblies include enough lead length to avoid a splice entirely. Always use weatherproof heat-shrink connectors in this location to prevent future corrosion.
Will a corroded fuel filler door lock actuator connector set a trouble code on a Toyota Supra?
It can. Many modern vehicles monitor the fuel door actuator circuit through the body control module. A corroded or open-circuit connector may log a fault code related to the actuator circuit, which can illuminate a warning indicator. Clearing the code after replacing the connector is recommended to confirm the fault does not return.

Shop fuel filler door lock actuator connectors by year for the Toyota Supra

19981997199619951994

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