If you take your vehicle for anemissions test shortly after thebattery has been disconnected orgone dead, it may not pass the test.This is because of certain ‘‘readinesscodes’’ that must be set in the on-board diagnostics for the emissionssystems. These codes are erasedwhen the battery is disconnected,and set again only after several daysof driving under a variety ofconditions.If the testing facility determines thatthe readiness codes are not set, youwill be requested to return at a laterdate to complete the test. If you mustget the vehicle retested within thenext two or three days, you cancondition the vehicle for retesting bydoing the following.Make sure the gas tank is nearly,but not completely, full (around3/4).Without touching the acceleratorpedal, start the engine, and let itidle for 20 seconds.Keep the vehicle in Park. Increasethe engine speed to 2,000 rpm, andhold it there until the temperaturegauge rises to at least 1/4 of thescale (about 3 minutes).Make sure the vehicle has beenparked with the engine off for 6hours or more.Make sure the ambienttemperature is between 40° and95°F (4° and 35°C).Without touching the acceleratorpedal, let the engine idle for 20seconds.1.2.3.4.5.6.CONTINUEDTesting of Readiness CodesEmissions Testing Technical Information53711/07/20 19:10:47 31SJA670_542
