Functional Description

Functional Description

Three warning lights alert the driver in the event of problems with the braking system.

The two brake pad switches H9 right and H10 left are formed of a microswitch on the pad that closes to earth when the thickness of the pad thins, sending a signal to the instrument cluster C10 at pin 4 of connector A, thereby turning on the "brake pad wear" warning light.

NOTE: RH switch, starting from M.Y. '98, no longer present in some versions.

The handbrake switch H1 closes when the handbrake lever is pulled and supplies a signal to the instrument cluster C10, at pin 4 of connector B, turning on the "handbrake engaged" warning light.

The same warning light is also turned on to indicate "low brake fluid level" through switch H17 located in the fluid reservoir: this is a float device which closes a contact when the level of the fluid in the brake fluid reservoir falls below a certain reference.

The "handbrake on" and "low brake fluid level" warning light is also turned on by the ABS system to indicate a fault in the "EBD" electronic braking device (see section 39B "ABS 5.3 with EBD").

The third warning light referring to the braking system is the "ABS system failure" warning light which is described in the corresponding section (see "ABS").