Launch Training – Power User Hybrid EV

Modern scan tools must work on all vehicle types: diesel, hybrid, extended-range EV, and gas. For the Chevy Volt, you can use Mode 6 diagnostics to detect misfires before they set trouble codes. We simulated a misfire, showing high counts on multiple cylinders, especially cylinder two.

For initial diagnosis, run a health report to identify DTCs in various modules. The scan tool helps interpret module abbreviations. We found DTCs in the HPCM2 and ECM.

Utilize “common functions” to understand vehicle-specific procedures like relative compression checks (which are self-guided) and essential resets such as brake pad replacement, ABS bleeding, battery reset, and window calibration. Ignoring these can lead to issues.

When a DTC (like the P300 misfire code we triggered) appears, consult TSBs and the X431 information system to avoid misdiagnosis. This system provides detailed information, including component locations and hybrid maintenance schedules.

The scan tool simplifies identifying module abbreviations; just tap them to see their full names.

For EV-specific functions, access special functions like “learn” and “reset.” These are guided by the service manual and help with tasks like battery pack capacity learns and fuel economy resets.

Actuation tests allow bidirectional control of components like coolant fans and water pumps. This helps in diagnosing issues by observing data streams and listening for abnormal sounds. For example, a noisy fan with high amperage suggests a failing bearing.

Lastly, the scan tool aids in ADAS calibrations, supporting dynamic calibrations even without targets. Becoming a “power user” involves practicing with the scan tool’s demo pages and understanding its full capabilities.