4-Pin Automotive Wiring Harness Connector – OEM 2109102-2 / 2109102

Direct-fit replacement for TE Connectivity part number 2109102-2 (also referenced as 2109102), a 4-pin automotive wiring harness connector used for sensor, actuator, and body control harness connections. The TE Connectivity 210910x series is used across multiple OEM platforms for low-current signal and sensor circuits.

Key Specifications

• OEM Part Numbers: 2109102-2 / 2109102 (TE Connectivity)
• Pin Count: 4
• Housing Material: PA66 glass-filled nylon
• Terminal Material: Copper alloy, tin-plated
• Current Rating: Up to 5A per pin (signal circuits)
• Wire Gauge: 20 AWG (0.5 mm²)
• Wire Length: 5.5 inches (140 mm)

2109102-2 vs 2109102 – Same Part, Two Formats

Both 2109102-2 and 2109102 refer to the same TE Connectivity connector. The hyphenated format (2109102-2) is the full TE Connectivity part number including the suffix; the short format (2109102) is commonly used in aftermarket catalogues. Both are interchangeable when ordering.

Pin Assignment Reference (4-Pin Sensor)

Compatible Applications

• Sensor harness connectors – TPS, MAP, MAF, coolant temperature
• Actuator and solenoid harness connectors
• Body control module sub-harness connectors

Diagnosis – Common Faults

• Intermittent sensor codes: Inspect terminal contact pressure – a loose terminal causes intermittent open-circuit faults
• High contact resistance: Measure with milliohm meter; >0.5Ω indicates terminal wear or oxidation – replace connector assembly

Package Contents

1 × 4-Pin Connector (2109102-2) with 20 AWG wire and terminal insert