Technician A says you do not have to solder a repaired wire. Technician B says wire insulation damage is sometimes found where the wire passes through an opening in a metal part. Who is right?

The ASE identifies Electronic Diesel Engine Diagnosis Specialist as an individual service area (L2). The electronic diesel engine diagnosis area involves the following components:
- General Inspection and Diagnosis
- Electronic Engine Controls Diagnosis
- Air Exhaust Systems Diagnosis
- Fuel Systems Diagnosis
- Emission Systems Diagnosis.