Sometimes you just don't want to unplug your injector, sensor or connector. These pins make it easier to connect a sensor connector that gets smaller and/or harder to access every year. I know that with injectors it's easier to diagnose a problem by looking at the voltage and pressure drop of the fuel when the system is full and the engine is off. I found many shorted or plugged injectors and some shorted injector drivers in the PCM doing a tap test to open the injector and look for a drop in fuel pressure using the rear sensors to power the injectors and to ground.
π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review
π CAMWAY 6 Inch Digital Caliper with LCD Display, Electronic Vernier Caliper, 150mm Stainless Steel Feeler Gauge, Plastic Digital Caliper Set for Zero Setting Inside/Outside Diameter, Depth, and Step Measurement Tool
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β Stainless Steel L-Square, Size 3-Inch x 4-Inch, Zona 37-434
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π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
8 Review