Speed control switch(es).
| Item | Description |
|---|---|
| 1 | Cruise control system OFF |
| 2 | Cruise control system ON (Standby (ON) |
| 3 | Acceleration active (Set +) |
| 4 | Interrupt cruise control (CAN) / reactivate (RES) |
| 5 | Deceleration active (Set -) |
The cruise control rocker switches are non-locking rocker switches. The circuit to the coil spring is via a hard-wired 16-pole connection.
The cruise control system rocker switches are based on the resistance bridge circuit principle. The cruise control system rocker switches provide a variable resistance signal voltage to the clock spring. The cruise control system rocker switches receive a 5 Volt reference voltage. The instrument cluster measures the feedback voltage in order to determine which function of the rocker switches has been selected.
A simple measurement of the resistance across pins 8 and 9 of the 16-pin clock spring connector allows the operation of the cruise control system rocker switches to be checked. A change in resistance must occur when a rocker switch is operated.