Test Procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK .
Start diagnosis
NOTE:
Voltage is supplied to the Secondary Air Injection (SAI) Solenoid Valve --N112-- from the Engine Control Module (ECM) Power Supply Relay -J271- on early models, or the Fuel Pump Relay -J17- on later models. Refer to Wiring Diagrams for circuit/pin locations.