2-Pin Collision Sensor Waterproof Connector – Toyota Honda OEM 7283-5073-70

Direct-fit replacement for Yazaki OEM part number 7283-5073-70, a 2-pin IP68 waterproof female connector with hairspring (coil spring) terminal design used for collision sensor (impact sensor), SRS airbag satellite sensor, and side impact sensor harness connections on Toyota and Honda vehicles. The hairspring terminal design maintains reliable contact under the high-vibration and high-G-force conditions of a collision event.

Key Specifications

• OEM Part Number: 7283-5073-70 (Yazaki)
• Pin Count: 2
• Gender: Female (with wire)
• Terminal Type: Hairspring (coil spring contact)
• Wire Gauge: 22 AWG (0.3 mm²)
• Wire Length: 5.5 inches (140 mm)
• Waterproof Rating: IP68
• Housing Material: PA66 glass-filled nylon
• Terminal Material: Copper alloy, gold-plated (hairspring contact)
• Current Rating: Up to 2A per pin (SRS signal circuits)

Collision Sensor Pin Assignment (2-Pin)

⚠️ Safety Warning: SRS airbag circuits carry stored electrical energy. Always disconnect the battery and wait a minimum of 10 minutes before working on any SRS connector to allow the backup capacitor to discharge. Failure to do so may cause accidental airbag deployment.

Compatible Applications

• Toyota: Front collision sensor, side impact sensor, and SRS satellite sensor harness connector
• Honda: Side impact sensor and SRS airbag satellite sensor harness connector
• General: Any 2-pin Yazaki hairspring waterproof connector application in SRS or collision detection circuits

Hairspring Terminal – Why Collision Sensors Use This Design

Standard flat-spring terminals can lose contact under the extreme vibration and G-forces of a collision event. The hairspring (coil spring) terminal maintains consistent contact pressure regardless of vibration or mechanical shock, ensuring the SRS control unit receives a reliable signal at the moment of impact. This is why hairspring terminals are mandatory in safety-critical SRS circuits and cannot be substituted with standard flat-spring terminals.

Diagnosis – SRS Collision Sensor Faults

• Toyota SRS fault codes: B1650 (Front Collision Sensor), B1651 (Side Impact Sensor) – inspect 7283-5073-70 connector before replacing sensor
• Honda SRS fault codes: 6-1 / 6-2 (Side Impact Sensor Circuit) – check connector integrity and wire seal condition
• SRS warning light after minor collision: Inspect connector for terminal displacement – impact forces can partially eject a terminal from the housing

FAQ

Q: What is a hairspring connector and why is it used for collision sensors?
A: A hairspring connector uses a coil spring contact instead of a flat spring terminal. The coil spring maintains consistent contact pressure under vibration and mechanical shock, making it essential for safety-critical SRS circuits where reliable signal transmission during a collision is required.

Q: Can I replace a hairspring terminal with a standard terminal?
A: No – hairspring terminals are a safety-critical design requirement for SRS circuits. Substituting a standard flat-spring terminal in an SRS connector will not meet OEM reliability standards and may cause the airbag system to malfunction.

Package Contents

1 × 2-Pin Female Connector (7283-5073-70) with 22 AWG wire and hairspring terminal insert