Autel Autolink AL319 [42/47] Ready test

5. Ready Test

This function can be used as a convenient readiness test tool by

automotive technicians to determine if the tested vehicle is

ready for an emission test. By visual and audible indication,

you will learn a vehicle’s monitors readiness.

5.1 General Information

Repairs to the emissions-control systems of a 1996 or newer vehicle

cause the vehicle‟s computer (ECU) memory to be cleared. The

vehicle must go through a drive cycle to allow the ECU to perform a

series of tests to ensure that the repair was successful, and before a

state mandated emissions test can be conducted. But how will you

know when it is ready?

With this scan tool, you don‟t have to drive around endlessly and

continuously coming back to the repair shop for retest if all required

tests by the ECU are completed. And you could also do a quick check

of the vehicle to determine if it is ready to receive an emission test

without the hassle of connecting your vehicle to the analyzer or

having to use a complicated scan tool.

In the following cases, this function is especially useful.

 You bought a used car and the check engine light had been

cleared to mask potential problems.

 You disconnected the battery for tune-ups and other engine

repairs, dead battery replacement, car radio installation and car

alarm installation.

 You used a scan tool to clear the DTCs.

 Your car has been sent to repair.

5.2 Test tool application