Passat Wagon L4-1.9L DSL Turbo (AHU) (1997)
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.