Differential Lock, Function - GF27.50-P-3005RR

Model 190 With Transmission 700.4 

With Code 467 (Electronic locking differential) 

Function requirements for hydraulic differential lock, general 

• Wheel speed signal present
• Complete and fault-free signal transmission via drive train CAN (CAN C1) and chassis CAN 1 (CAN E1)

Hydraulic differential lock, general 

The hydraulic differential lock is used on vehicles with CODE 467 (Electronic locking differential). The Electronic Stability Program control unit (N30/4) sends the request for the locking ratio of the differential lock (specified hydraulic pressure for the disk pack of the differential) via chassis CAN 1, the AMG gateway control unit (N93/9) and drive train CAN to the dual clutch transmission control unit (N15/13). The latter actuates the multidisk clutch of the differential by means of the transmission-internal hydraulics via the differential regulation valve (Y3/11y9). The differential pressure sensor (Y3/11b4) sends the pressure signal to the dual clutch transmission control unit.

Electrical and hydraulic diagnosis is performed via the dual clutch transmission control unit. The diagnostic connector (X11/4) receives this data via the diagnostic CAN (CAN D), AMG gateway control unit, chassis CAN 1, powertrain control unit (N127) and drive train CAN. The functional diagnosis of the differential lock is performed via the Electronic Stability Program control unit. The diagnostic connector receives this data via the diagnostic CAN, AMG gateway control unit and chassis CAN 1.