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Readiness Test with details (Techstream)

4.4K views 14 replies 4 participants last post by  Toyoga  
#1 · (Edited)
Sometime ago a question was raise about a way to test readiness using techstream. At that time and up to the present no one was able to provide the answer. While facing the same question a few weeks ago after my car failed the mandated vehicle inspection test my research resulted to an answer of yes. I'm sharing snapshot pictures of techstream's typical results. Of course you can use a generic OBD2 scanner but these scanners in general cannot produce the details of the tests produced by techstream.
 

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#3 ·
Went to a government authorized shop for the inspection. Was told to drive some more since the test failed. Tested the car with techstream and the engine healthcheck shows incomplete. So went to a drive to Jones beach and back (around 60 to 70 miles total). Tested the car again with techstream, this time it says complete. Went back to the shop to retest and got a pass.

In the picture, the first figure is the result after selecting Powertrain then engine. This shows pass in the tests conducted. This means readiness test is pass. To see the details of each test you have to click the magnifying glass to display the test detail. I will try posting each detail result one by one.
 
#11 ·
Did you replace the battery not long before having the test done? That was my problem when I experienced the same issue on another one of my vehicles. I didn't even think about it until the guy came back and told me it had failed. I drove it like 300 miles and went back to have the test done and there still wasn't enough of the readiness codes set. If I recall correctly, I had to have 8 of 9 set. I tried all kinds of things being I needed to get it done in certain amount of time. Other things I had on my to do list too at the time. I even tried a sequence procedure I found online to get it to set. From my experience driving it on the freeway really was of no benefit. It was more about stop and go at random speeds. I had my code reader hooked up to show when I was successful.
 
#12 ·
Back when OBD2 first came out people had a lot of trouble passing their state inspections all over the US because the Readiness Tests could not be run by automobiles' OBD2 Monitors and were not all passed. Ford, GM, Chrysler,VW --all the manufacturers had what were known as "Drive Cycles" to get the sensors and the OBD2 Monitors to perform the Readiness Tests and they were all different. These Drive Cycles were finicky and highly specific--drive 27 MPH for 7 minutes; let engine idle at 2500 RPMs for 3 1/2 minutes; drive 36 MPH for 10 minutes; idle 4 minutes at 1500 RPM; drive 67 MPH for 8 minutes etc. Many cars had EVAP sensors and testing pumps that could not run their EVAP readiness test in the WINTER! They required an air temperature over about 47 degrees F. Some models of VOLVO and MAZDA would NEVER reset and turn off the MIL engine trouble light and California and then other states had to exempt them from that requirement to pass state tests. This is the first I have read concerning the 5th gen RAV having a Readiness Monitor fail. I agree--if you disconnect a battery the Monitors will all need to reset. If the gas cap is missing or loose the EVAP monitor won't be "ready". Also if there is an active DTC with a specific sensor failure or mechanical issue then one or more Monitors will not be "Ready" or "PASS". I'd be interested to know the "Drive Cycle" to put our RAVs monitors into the ready/pass state. As a practical matter--if most people just drive around randomly in stop and go traffic for a week or so and go on the highway a couple times then that should be enough to set all the monitors to pass/ready--assuming there is no sensor or mechanical malfunction.
 
#15 ·
I don’t know if this is applicable to the RAV4.
For my last car, a 2012 Subaru Forester, the Universal Drive Cycle instructions:
Start car, allow to idle for at least 30 seconds.
Drive for at least 10 minutes at speeds of at least 40 kph.
Stop car, but don’t stop the engine.
Allow to idle for at least 30 seconds.
Turn off.