Volvo VNL Service Manual page 35

Group 30 Electrical System—VNL, VNM
Intermittent Windshield Wiper/Washer Module
The windshield wiper module uses inputs from the wiper/washer switch to electronically
control the wiper and washer motors when intermittent wipers are in use. It is located
under the relay panel, and is accessed by removing the top and front TEC center covers,
and the fuse and relay panels.
Intermittent wipers are set to make a single sweep every 10 seconds. To shorten the
interval, move the stalk to the normal wipe position, then to the intermittent wipe position
when the next wiper sweep is desired. The interval can be set to between 1 and 10
seconds.
The wipers will also make a single sweep if the wiper stalk is slightly depressed and
held. The wipers return to the park position when the lever is released.
Pin Circuit Number Description
1 0G
2
3
4
5
6 388
7
8 387
9 384
10
11
12
13 389
14
15 384
16 385
Wiper/Washer Module Connector
Battery ground
Not used
Switch, intermittent wiper
Not used
Windshield washer motor
Power supply
Not used
Windshield wiper motor
Not used
Windshield wiper motor
Windshield wiper motor, contact
parking position
Input Characteristics
/Output
I Battery (-)
I On = Supply voltage (min. 10mA)
Off = 0C
I On = Supply voltage (min. 10mA)
Off = 0C
I Switched battery (+)
O Supply voltage (max. 12A)
(source)
I Supply voltage (max. 12A)
I Parking position = Ground
Design and Function
W3000554
33