When performing the YDIS component "stationary test" on the ISC, what should the engine status be?

When performing the YDIS (Yamaha Diagnostic Information System) component "stationary test" on the ISC (Idle Speed Control), the engine status should be turned off. This requirement is in place to ensure that the readings and adjustments made during the test are based on static conditions without the influence of engine operation.

Conducting the test with the engine off allows for more accurate diagnostics of the ISC components, ensuring that any measurements taken are not affected by other engine variables that might interfere with the results. It helps in isolating the ISC's functionality for better troubleshooting and evaluation.

In contrast, having the engine running could introduce variables such as engine vibration, heat, or other electrical signals that would not be present in a stationary (off) state. This is why the other options—where the engine is either running, at idle, or in any state—are not suitable for this specific test.