How to set readiness flag after Check Engine Light is thrown?

8502 Views 6 Replies 3 Participants Last post by tottenham12712, Jul 6, 2012

fanbanlo

Discussion Starter · Jul 4, 2012

When I turn my key to II without starting the engine, the check engine light stays on, and blinks 3 times then it goes off. According to the manual:

Your car has certian "readiness codes" that are part of the on-board diagnostics for the emissions systems. In some states, part of the emissions testing is to make sure these codes are set. If they are not set, the test cannot be completed. If your car's battery has been disconnected or gone dead, these codes are erased. It takes several days of driving under various conditions to set the codes again. If possible, do not take your car for a state emissions test until the readiness codes are set. To check if they are set, turn the ignition ON (II), but do not start the engine. The Malfunction Indicator Lamp will come on for 20 seconds. If it then goes off, the readiness codes are set. If it blinks 5 times, the readiness codes are not set.

I have driven by car for days but the code is still not set. What do one need to do to trigger the car to set the readiness flag?

Thanks

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fanbanlo

Discussion Starter · #2 · Jul 5, 2012

To set the monitors to “Ready” the vehicle must complete its appropriate drive cycle.
Drive cycles are unique and specific to each make and model. Check your owner’s
manual or contact the vehicle manufacturer or a qualified service provider for more
information about drive cycles.

http://dnr.mo.gov/gatewayvip/docs/obdfactsheet.pdf

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fanbanlo

Discussion Starter · #3 · Jul 5, 2012

If you must get the vehicle re-tested within the next two or three days, you can
condition the vehicle for re-testing by doing the following.
• Make sure the gas tank is nearly,
but not completely, full (around 3/4).
• Make sure the vehicle has been parked with the engine off for 8 hours or more.
• Make sure the ambient temperature is between 20° and 95° F.
• Without touching the accelerator pedal, start the engine and let it idle for 20 seconds.
• Keep the vehicle in Park.
Increase the engine speed to 2,000 rpm and hold it there until the
temperature gauge rises to at least 1/4 of the scale (approximately 3
minutes).
Select a nearby lightly traveled major highway where you can maintain a speed of 50 to 60 mph for at least 20 minutes.
Drive on the highway in D5.
Do not use the cruise control.
When traffic allows, drive for 90 seconds without moving the accelerator pedal.
(Vehicle speed may vary slightly; this is okay.)
If you cannot do this for a continuous 90 seconds because of traffic conditions, drive
for at least 30 seconds, then repeat it two more times (for a total of 90
seconds).
• Then drive in city/suburban traffic for at least 10 minutes.
When traffic conditions allow, let the vehicle coast for several seconds without using the
accelerator pedal or the brake pedal.

If the testing facility determines the readiness codes are still not set, see
your Acura dealer.

http://tl.*********.com/forums/showpost.php?p=10291328&postcount=5

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fanbanlo

Discussion Starter · #5 · Jul 5, 2012

tottenham12712 said:
You need to drive for a few miles without turning the car off, generally 10 miles does it for sure.

I've driven more than 10 miles at a time. It is still not set yet.

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