Automotive Electrical and Electronic Systems Classroom Manual Fifth Edition Update by John F. Kershaw

13
Gauges,
Warning
Devices, and
Driver
Information
System
Operation
LEARNING
OBJECTIVES
Upon completion and review of this chapter, you
should be able to:
• Identify and explain the operation of electromagnetic
instrument circuits, including
gauges and sending units.
• Explain the operation of malfunction indicator
lamps (MIL).
• Explain the operation of a simple mechanical
speedometer.
• Identify and explain the operation of driver
information systems (electronic instrument
circuits).
• Explain the operation of the head-up display
(HUD).
KEY TERMS
Air Core Gauge
Bimetallic Gauge
D’Arsonval Movement
Driver Information Center (DIC)
Driver Information System (DIS)
Gauges
Ground Sensor
Head-up Display (HUD)
Instrument Panel Cluster (IPC)
Malfunction Indicator Lamp (MIL)
Menu Driven
Nonvolatile RAM
Three-Coil Movement
Vacuum Fluorescent Display (VFD)
Warning Lamps
INTRODUCTION
This chapter covers the operation and common
circuits of gauges, warning devices, and driver
information systems. These systems include cooling
fans, electromagnetic instrument circuits
(sending and receiving gauges), and electronic
instrument circuits (driver information systems).
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