volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Instrument Panel Voltage Regulator|Testing and Inspection|Page 4878 > < With Digital Clock|Page 4874
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Instrument Panel Voltage Regulator: Testing and Inspection

NOTE:  Only check when fuel and coolant temperature gauges both indicate false readings. Do not disconnect battery ground strap; instrument cluster
multi-pin connector remains connected.

Voltage Supply, Checking:

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Remove right instrument.

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Switch on ignition.

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Connect voltmeter between terminal 15 -a- and ground -b-.
Specification: approx. battery voltage

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If specification not achieved, check wiring according to wiring diagram.

Output Voltage, Checking:

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Connect voltmeter between outlet -c- and ground -b-.
Specification: 9.5-10.5 V

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If specifications are not achieved, voltage stabilizer defective; replace.

Instrument Panel Voltage Regulator|Testing and Inspection|Page 4878 > < With Digital Clock|Page 4874