FUNCTIONAL DESCRIPTION

There is a single (earth) signal sent by the steering column switch unit H005 to the Body Computer M001 that manages all the rearscreen wiper commands: from pin 4 of H005 to pin 59 of connector D of M001; the signal sent is coded by means of resistive dividers so that multiple information can be sent by the steering column switch unit to the Body Computer via a single connection.

The reference earth reaches pin 10 of H005 from pin 34 of connector D of M001.

Similarly, the windscreen washer commands are sent from pin 5 of H005 to pin 55 of connector D of M001.

The Body Computer M001 - connector A - receives a direct powr supply from the battery through the line protected by maxi fuse F01 of the engine compartment junction unit B001.

The Body Computer M001 receives an ignition-controlled (INT) power supply at pin 11 of connector E, whilst the ignition-controlled (INT/A) signal reaches pin 1 of connector E.

Pin 9 of connector E of M001 provides the Body Computer with a reference earth.

The Body Computer M001 sends the control signal to the rearscreen wiper motor N016 from pin 13 of connector C.

Pin 7 of connector F, on the other hand, receives the earth signal coming from the motor end of travel cam which stops operation. The rearscreen wiper motor N016 is then earthed.

The Body Computer M001 sends two signals from pins 15 and 12 of connector C which activate the windscreen/rearscreen washer pump N022 which turns sending the detergent fluid to the front windscreen.

The supply lines for the rearscreen wiper motor and the pump are protected by fuse F43 located in the Body Computer M001.