Charcoal Canister - Toyota Yaris Forums

RutherfordmanX · 11-03-2015, 08:27 PM

Here something for the tech guys out there. I have a friend at work with a 1999 RAV4. Cant get through inspection and it appears his canister is bad with the codes it is pulling. A mechanic told him to disconnect all the hoses from the evap canister and leave them open. Clear the code, drive it a bit and get it inspected. The code will not come back with the hoses off and open. Hook everything back up after inspection. Could that really work?

CTScott · 11-03-2015, 08:59 PM

Quote:

Originally Posted by RutherfordmanX

Here something for the tech guys out there. I have a friend at work with a 1999 RAV4. Cant get through inspection and it appears his canister is bad with the codes it is pulling. A mechanic told him to disconnect all the hoses from the evap canister and leave them open. Clear the code, drive it a bit and get it inspected. The code will not come back with the hoses off and open. Hook everything back up after inspection. Could that really work?

No. One of the key parts of the test is the readiness monitor. That test is done after the vehicle is run and then powered off for 6+ hours. When you clear the codes you clear the readiness monitors as well. With the hoses off, when it tries to run the monitor test it will fail (leaving the monitor as "not ready") and also logging another code.

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11-03-2015, 08:27 PM	#1
RutherfordmanX Drives: 2017 Yaris Hatchback Join Date: Jun 2015 Location: Rutherfordton, NC Posts: 52	Here something for the tech guys out there. I have a friend at work with a 1999 RAV4. Cant get through inspection and it appears his canister is bad with the codes it is pulling. A mechanic told him to disconnect all the hoses from the evap canister and leave them open. Clear the code, drive it a bit and get it inspected. The code will not come back with the hoses off and open. Hook everything back up after inspection. Could that really work?