Question about 2002 Toyota RAV4

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My Rav4 2002 just failed the emissions test, what could be the cause? Not Ready showed up 4 times on sheet

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  • Marge Crean May 14, 2010

    The car has not been worked on recently, and the battery has not been disconnected. I have not replaced spark plugs, does it have electronic ignition and could that be the problem?

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Its indicating that the memory on the computer has not gone its learning cycle
every time the ecu (electrinic control module)
its reset it doesn't know any information on the vehicle
so you need to drive it so it can do a relearn process and it checks to see if you have any problems , if you have problems the check engine will come on
on your vehicle comes up not ready so drive it
did someone fix it or did you replace the battery ?
what you have to do is drive it for 50 miles and some times up to 300 hundred miles

Posted on May 14, 2010

  • marco valerio May 14, 2010

    i found this ECU flash reprogram for car's ECU it can only be done by toyota that could be the problem well let me keep researching this ECU

    2001 and new model are affected so take it to the dealership

    good luck

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A service technician will turn off the dashboard "check engine" light after most repairs. This resets the vehicle's emission system components to "not ready". The status remains "not ready" until the vehicle's computer has had adequate time to review the repaired component. This happens after the vehicle is driven for a period of time established by the manufacturer.

If the vehicle's emissions system status is "not ready" when it is presented at the E-Check station during the initial test cycle, a tailpipe emissions test may be conducted. If the vehicle is transferred to another test type, the vehicle must remain on the different test track until the vehicle passes the emissions test or receives a waiver. For example, if the vehicle undergoes an OBD II test and fails, it cannot be downgraded to a tailpipe test on a re-test; the vehicle must pass the OBD II test.

For initial and subsequent tests, if a dashboard light is on when the vehicle is presented at the E-Check station, the vehicle will fail the test.


How can the vehicle status be made ready?

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