1996 Ford Bronco Secondary Air Injection (Thermactor) System Diagram - TAB/TAD

This document is a schematic diagram of the Secondary Air Injection System, uploaded to a 1996 Ford Bronco gallery. It illustrates how the powertrain control module (PCM/EEC) manages the air injection (Thermactor) system. Input sensors shown feeding the PCM include ECT (engine coolant temperature), ACT/IAT (air charge/intake air temperature), and CPS/PIP (crankshaft position/profile ignition pickup). The PCM controls two solenoids, labeled TAB (Thermactor Air Bypass) and TAD (Thermactor Air Diverter), which operate the combined bypass and diverter valve. The diagram shows airflow from the secondary air pump through the combined bypass & diverter valve, then through a check valve toward the engine's exhaust, with connections illustrated to the intake, exhaust, engine, and the Thermactor (catalyst). The diagram is useful for understanding component locations and the logical flow of the smog pump air routing: sensor inputs to the PCM, PCM outputs to TAB/TAD solenoids, and the resulting mechanical air path from pump to exhaust/catalyst. No year, model, part numbers, wire colors, or specifications appear in the diagram itself; it is a conceptual system overview rather than a wiring diagram or parts list.