BMW 740iL Manuel de réparation télécharger pdf (Page 44)

Level Control Systems

Control Unit

The EHC control module is located in the right rear luggage compartment area in the mod-

ule carrier next to the battery. On the E65/E66, the control module is connected to the K-

CAN S. The EHC control module receives the following information:

• Vehicle Ride Height

• Load Cutout Signal

• Terminal 15 ON/OFF

• Vehicle Speed

• Lateral Acceleration

• “Engine Running” Signal

• Flap Status (Doors/Trunk)

The Control unit decides on a case by

case basis whether a control opera-

tion is required in order to compen-

sate changes in load. It prevents

intervention in the case of other caus-

es. This makes it possible to adapt

the frequency, specified height, toler-

ance thresholds and battery load opti-

mally by means of the control opera-

tion to the relevant situation.

In addition to handling the self levelling

suspension, the control module moni-

tors the system components as well

as storing a displaying faults. The

control module has full diagnostic

capability.

The EHC module is a 26 pin module

with an ELO type connector. The

module is connected to the K CAN S.

The majority of the input messages

are from the K CAN S Bus.

EHC Module Location

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BMW 740iL Manuel de réparation Page 44