Audi 80 Quiz
Instruments and Auxiliary Equipment

Voltage stabilizer

In this manual: Instruments and Auxiliary Equipment
Technical Description — 39Engines — 41Exhaust System — 13Cooling System — 28Fuel tank and fuel pump — 12Air Filter and Intake Ducts — 13Mono-Motronic Injection System — 18Digifant Injection System — 19KE-III-Jetronic Injection System — 35MPI and MPFI Injection Systems — 32Clutch — 11Transmission and Driveline — 21Suspension and Steering — 33Brake System — 41Anti-lock brake system — 8Wheels and Tires — 13Body Electrical System — 35Ignition System — 24Lighting — 14Signaling Devices — 7Instruments and Auxiliary Equipment — 54Heating and Ventilation — 7Body Components — 18Troubleshooting — 6Specifications — 13
~1min read
На обратной стороне комбинации приборов сбоку на небольшом радиаторе установлен

The voltage stabilizer (arrow) is installed on the side of the small heat sink on the back of the instrument cluster.


A small box, the voltage stabilizer, is bolted to the back of the instrument cluster with three bolts. Its function is to supply the temperature and fuel gauges with fully regulated voltage. Otherwise, voltage fluctuations would cause the gauge needles to fluctuate.


If both gauges behave erratically or show nothing at all, the stabilizer is most likely the cause.


Checking the voltage stabilizer
PROCEDURE

Remove the instrument cluster, then reconnect the wire.

Switch on the ignition.

Connect a voltmeter between the center and left terminals of the stabilizer (viewed from the back of the instrument cluster).

The voltmeter should read 9.75–10.25 V.

If the voltage is outside these limits, the voltage stabilizer is faulty. If there is no voltage at all, check the power supply.

To do this, connect a voltmeter between the center and right terminals of the stabilizer. If it does not show battery voltage, look for a break in the wiring.

Test yourself

A quick Audi 80 quiz: every answer comes with an explanation and a link to the manual page.