Title: Test warning devices (lights and audible) circuit sensor/sending units, bulbs/LEDs, sockets, connectors, wires, and control components/modules.
Course: Diesel Equipment Technology II (20107-II) > Section: Electrical/Electronic Systems: Servicing the Gauges and Warning Devices

Testing should include

- checking the coolant temperature, fuel, vehicle speed, odometer, oil pressure, and tachometer
- following procedures for each individual circuit.

Note: Typically, digital and fiber optic gauges and warning circuits are not serviceable by the automotive service technician but are sent to special repair centers when servicing is required.

Process/Skill Questions:

- What tool might be used to test sensors?
- What is a common fault of connectors?
- What is the difference between a weather pack connector and a standard connector?