Main task: Connection

PINS DESCRIPTION

Pin No.	Signal type	Description
3, 6	+30	Supplied power via maxifuse from UEC.
2, 5	Ground	Grounded in grounding point G30A
1, 4 and 7	Ground	Grounded by ECM. The pin is grounded differently depending on the current fan stage.

Power supply

Fig 1: Relay Unit Radiator Fans Wiring Diagram - Power Supply
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Petrol engine

Fig 2: Relay Unit Radiator Fans Wiring Diagram - Petrol Engine
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Diesel engine

Fig 3: Relay Unit Radiator Fans Wiring Diagram - Diesel Engine
Courtesy of SAAB-SCANIA OF AMERICA, INC.