Title: Perform charging system voltage and amperage output tests and alternating current (AC) ripple test.
Course: Diesel Equipment Technology II (20107-II) > Section: Electrical/Electronic Systems: Servicing the Charging System

Performance should include

- using the appropriate testing equipment
- using the appropriate service information
- determining whether an additional diagnosis is needed (when the vehicle is not performing correctly)
- checking A/C system is orifice tube or thermal expansion valve (TXV).

ASE 5: V. Electrical/Electronic Systems: D. Charging System (P-1)

Process/Skill Questions:

- What is the proper charging voltage with the vehicle running?
- Where should the inductive pickup be placed during an output test?
- What procedures could be used to full field test an alternator?
- Where is the amperage specification for an alternator found?
- What alternator component is defective if the AC ripple test indicates too much AC voltage?
- What is the difference between an accumulator and receiver dryer?