Title: Test the engine cooling/condenser fan motors, relays, modules, switches, sensors, wiring, and protection devices.
Course: Diesel Equipment Technology III (20107-III) > Section: HVAC: Servicing the Electrical Operating Systems and Related Controls

Testing should include

- using OEM wiring diagrams and manuals to perform troubleshooting steps
- using appropriate tools for the troubleshooting
- using manufacturer software to perform system operation tests.

Process/Skill Questions:

- How does one determine an open switch vs. a closed switch?
- What setting on a multimeter is used to check ohms?