After running the HES test on a bad HES, the engine still wouldn't start after I installed a good HES. This set me back a day or two.
The instructions warn about this, but the warning is unclear and terse.
Here is the warning (v. 1503.2):
"In the subsequent test, the motorcycle is forced into a state where the engine cannot be started. Correct termination of this test subsequently cancels this state. Remember to cycle the ignition after the test."
Here is my suggested clarification:
"In this test the GS-911 puts the Motronic into a state where spark and injection are disabled so that the engine will not start. This state will persist until EITHER the test is successful, OR the Motronic ECU is re-initialized by pulling Fuse F5 for at least 5 minutes."