By Craig Van Batenburg, DMM, Automotive Career Development Center (ACDC)

1. Test 12 volt first. Keep at 11.5v all the time (except 12v crank).
2. Look for extra keys in car. Disable 12 volt if not found.
3. Use a factory scan tool and diagnostic software (ACDC recommends Identifix) early on in the process.
4. High voltage leak codes can be created by contaminated fluids.
5. Dirty MAF sensor or Carboned Throttle Plates can create a no-start.
6. ICE cranks at 1,000 rpm can fool you into thinking it is running.
7. Oil weight matters. Resolver sensors watch starter motor rpm.
8. Service brakes yearly in bad climates: snow, ice, pollution, salt, etc.
9. Keep your 12 volt brain and your HV brain separated by facts.
10. Capacitors are located where the HV battery DC cables go first.
11. Never assume the HV system is off even if you shut it down.
12. Use only CAT III equipment rated to 1000 volts.
13. Always wear tested Class O gloves at 1000 volts with leather.
14. Scopes require a differential probe at each channel when at HV.
15. Interlock circuits will keep an HEV/EV from going into READY.
16. Drive with scan tool to get a “read” on HV battery SOH.
17. Use factory fluids: Supercool A/C oil is ACDC tested.
18. Test DC-DC converters the same way you would test an alternator.
19. Promote your shop to body shops and HEV/EV owners.
20. Install a J1772 Level II charger at your shop. List on PlugShare.com.
21. Buy and drive an HEV/BEV/PHEV/EV RE.

In addition .  . .

• Using Stabilant 22a on electrical contacts is great insurance to prevent comebacks. Sold at ACDC.
• ACDC can also help with marketing your service with its QSP plan.
• And ACDC offers training to be an ACDC Hybrid Technician and Qualified ACDC Shop.

For further info: www.fixhybrid.com, home of “Up Your Voltage!”