All 45 exams / H-series / ASE H6 Electrical/Electronic Systems
H6
ASE H6 Electrical/Electronic Systems
Transit buses
What's on the H6 exam?
1
General Electrical/Electronic System Diagnosis
2
Battery and Starting System Diagnosis and Repair
3
Charging System Diagnosis and Repair
4
Lighting Systems Diagnosis and Repair
5
Related Vehicle Systems Diagnosis and Repair
Content-area outline only, authored from ASE's public task-list structure. No test question, answer, or diagnostic scenario is reproduced from ASE or any prep publisher.
H6 quick reference H-series
Categoryrepair technician
Work experience2
Question count60
Time allowed90 minutes
Fee$62
Recert cycle5 years
Recert pathRetest (approximately half-length recert version) every 5 years, or the ASE Renewal App.
Source: https://ase.com/wp-content/uploads/ASE_TransitBus_Study_Guide.pdf.
Checked 2026-07-30.
Track this one
Already hold H6? Add it to your recert tracker.
Enter the date you earned H6 and the tracker flags exactly when it's due, and whether you're still inside the Renewal App credit window instead of a full retest.
Open the recert trackerCompare this test against the rest of the family in the full certification matrix, or use the which-test wizard to see if it fits your role.