Dynamic Digital Inputs

Dynamic Digital Inputs

Distance Signal - This input is supplied to the cluster by the ASC/DSC control module as a square wave signal. Pulses from the left rear wheel speed sensor are processed by the DSC module to produce this signal. The cluster electronics process the input for the cluster display and pass the signal along on the K bus as speed signal "A" for other control modules requiring the vehicle speed signal.

Engine Control Module Signals - The "Ti" & "TD" signals are produced by the Engine control module and sent to the cluster. As first introduced on the E39, these signals were delivered to the cluster via hard wire. On models produced after 9/98 these signals are delivered by the CAN Bus.




The cluster processes the signals for the tachometer and fuel economy indicator displays. The Ti signal is used by the cluster for the SI indicator. The cluster also passes the TD signal out over the K Bus.

Transmission One Way Data Signal - The AGS control module provides a one way data signal to the instrument cluster for signalling of the range selector position, driving program and for fault lamp activation. This signal is provided over the CAN Bus on vehicles produced after 9/98.

DIMMER SIGNAL - This is a pulse-width modulated signal from the LCM. It is used to control the intensity of the back lighting of the instruments and the LCDs when the lights are switched ON. This signal is also output over the K-Bus.

K-BUS Signalling - The Cluster receives signals for the Check Control Pictogram over the K-BUS.