Strategy-Based Diagnostics

The strategy-based diagnostic is a uniform approach to repair all Electrical/Electronic (E/E) systems. The diagnostic flow can always be used to resolve an E/E system problem and is a starting point when repairs are necessary. The following steps will instruct the technician how to proceed with a diagnosis:
1. Verify the customer complaint.
- To verify the customer complaint, the technician should know the normal operation of the system.
2. Perform preliminary checks.
- Conduct a thorough visual inspection.
- Review the service history.
- Detect unusual sounds or odors.
- Gather diagnostic trouble code information to achieve an effective repair.
3. Check bulletins and other service information.
- This includes videos, newsletters, etc.
4. Refer to service info (manual) system check(s).
- "System checks" contain information on a system that may not be supported by one or more DTCs. System checks verify proper operation of the system. This will lead the technician in an organized approach to diagnostics.
5. Refer to service diagnostics.