E5060 Cruise control

Description

The Cruise Control function allows the vehicle to always be driven at a constant speed without pressing the accelerator pedal.

The function is managed by the engine control unit which receives the commands from the special Cruise Control lever on the left of the steering wheel, under the steering column switch unit.

The function is switched on by turning the ring nut (ON).

When a speed is set (SET +, SET -) it remains memorized and can be recalled at any time (RCL).

The function is automatically switched off:

• by pressing the brake pedal;
• by pressing the clutch pedal;
• by turning the ring nut to OFF;
• by turning off the engine;

In these cases the last speed reached is memorized, and can be recalled by pressing the RCL button.

The system also switches off at vehicle speeds below the permitted minimum (about 30 km/h)

When the function is switched on, the relevant warning light on the instrument panel, connected via the CAN network to the engine management control unit, comes on.

For more details Characteristic of working principle 5580A Cruise control system

Description of operation

The Cruise Control function is controlled by engine management unit M10 upon a command from the Cruise Control switch H7 located to the left of the steering wheel.

The switch H7 is supplied when the ignition is switched on (INT) - pin 2 - from the line protected by the fuse F35 of the unit under the dashboard B2.

Control H7 is connected to management unit M10:

• to pin 10 of connector A, with the ON/OFF signal
• to pin 42 of connector A, with the RCL signal
• to pin 43 of connector A, with the SET + signal
• to pin 58 of connector A, with the SET - signal

Pin 26 of connector A of M10 receives the 'pedal released' signal (N.C. contact) coming from the second contact for the brake lights switch I30 with the supply controlled by the ignition (INT) from the line protected by fuse F35 of the unit under the dashboard B2.

Via the CAN line, the engine control unit M10 is connected to the Body Computer M1 and the instrument panel E50, to manage the 'Cruise Control on' warning light.

Wiring diagram

Components

Component location