Windscreen Wipers: Notes

WARNING: This page is about a different car, the 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

The windscreen wiper assembly is located under the cover beneath the windscreen.

The windscreen wipers are controlled by a switch on the steering column to the right of the steering wheel.

The assembly comprises a motor, two wiper arms and an arm linkage that converts motor rotation into wiper movement.

In the motor there is a built-in thermoswitch that trips if the control switch has been activated and the blade has jammed (frozen).

The wiper switch has three positions:

Intermittent (J)
Low speed (I)
High speed (II)

There is a function in the intermittent position that enables the frequency of wipes to be regulated by a potentiometer. The wipers come on at an interval of between 2 and 15 seconds depending on the setting made. The potentiometer for the intermittent wiper controls the DICE control module which operates the wiper relay.

Fig 1: Communication Diagram - Windscreen Wipers

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Circuit Diagram - Windscreen Wipers Intermittent (J))

Courtesy of SAAB-SCANIA OF AMERICA, INC.