ISTA Fault Diagnosis Procedure / Clear faults - Chicken and Egg

[Colink2]

Please help regarding ISTA fault diagnosis.

I have a 04862 error

After checking for faults I go into the Test Procedure
When I click Continue to do each test eg Charge air Duct leakage test I get a message to clear all faults before continuing.

But-
How do I clear the faults when still in the test procedure steps
OR
If I exit the Test Procedure Steps to clear the faults, how do I get back to the Test Procedure Steps  
If I run the identify faults procedure there is likely to be no faults, thus no Test Procedure