200 Quattro 20V Sedan L5-2226cc 2.22L DOHC Turbo (3B) (1991)
Instrument Panel Voltage Regulator: Testing and Inspection
Voltage stabilizer, checking
Note: When checking the voltage stabilizer, do not disconnect the battery ground strap or connectors from the instrument cluster.
-
connect voltmeter between plus (+) connection 1 and ground 2
-
switch ignition ON
-
approximately battery voltage
If NOT OK
‹› check wiring using current flow diagram
-
connect voltmeter between terminal 3 and ground 2
-
9.75V-10.25V
If NOT OK
‹› replace voltage stabilizer