90 Quattro 20V (Canada) L5-2309cc 2.3L DOHC (7A) (1989)
Temperature Gauge: Testing and Inspection
Without Auto-Check System
Engine coolant temperature gauge, checking
(for vehicles without Auto-Check system)
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remove connector to temperature sensor
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connect VW 1301 to contact 1 and ground
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set dial of VW 1301 to 660
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switch ignition ON
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needle must move to area A on gauge
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set dial of VW 1301 to 58
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needle must move to area B on gauge
If needle does not move to specified area,
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check wiring according to current flow diagram
If wiring is OK,
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replace temperature gauge