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Modules, Relays & Solenoids: Solenoids: Notes

WARNING: This page is about a different car, the 1994 Mercury Tracer and 1994 Ford Escort. However, it is still accessible from the selected car via links, so may be relevant.
  1. Secondary Air Injection By-Pass/Diverter (AIRB/AIRD) Solenoids -Faults in secondary air injection solenoids or circuits should set a diagnostic trouble code. See QUICK TEST in appropriate TESTS W/CODES - EEC-IV (1.9L) article in the ENGINE PERFORMANCE section. If diagnostic trouble code has not been set, disconnect solenoid to be tested.
  2. Measure resistance between sensor terminals. If resistance is not 50-100 ohms, replace solenoid. If resistance is 50-100 ohms, solenoid is okay. See CIRCUIT TEST KC in the appropriate TESTS W/CODES - EEC-IV (1.9L) article in the ENGINE PERFORMANCE section for additional circuit testing.
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