lemon-mirror:
Home >> Toyota >> 1981 >> Pickup Base >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Air Injection System >> Testing >> System Check >> Corolla

System Check: Corolla

  1. Warm up engine to normal operating temperature. Set engine speed at 2000 RPM. Check that air is discharged intermittently from air by-pass hose. Race engine and quickly close throttle. Air should discharge briefly from air bypass hose.
  2. Run engine at idle. Disconnect vacuum hose located between VTV and 3-way connector at VTV. Check that air discharges from air by-pass hose within 15-25 seconds. Reconnect hose and check that air stops discharging after a few seconds.
  3. At service connector located at corner of left dash panel, connect a wire from "TWO terminal to "E" terminal. Air should discharge from air by-pass hose. Disconnect wire.
  4. Pinch hose at vacuum switch with fingers and gradually increase engine speed. Check that intermittent air stops discharging from air by-pass hose at 2200 RPM. Release hose.
    NOTE: Perform step 4)  in as short a time as possible. Engine will misfire slightly while hose is pinched off since deceleration fuel cut off system is on.
  5. Stop engine and reconnect all hoses. If system performed correctly, testing is complete. If not, check individual components as necessary.
· About lemon-mirror