gf3233w2003f

Axle load measuring device, function

Type gf · topic 32.33 · version 0100 · 2019-06-20

Applies to: Model 963 with code J3Z (Axle load measuring device) with code V2B (Actros model generation 5) Model 963 with code J3Z (Axle load measuring device) with code V2F (Actros S/M cab, model generation 5) Model 964 with code J3Z (Axle load measuring device) with code V2J (Arocs model generation 5) Model 964 with code J3Z (Axle load measuring device) with code V3L (Actros BM964 model generation 5)

Where it sits

Function group 2 Chassis › 32 Suspension › 32.33 Ground clearance compensator (NR/ENR) — Series 963 · Series 964

GF32.33-W-2003F

Axle load measuring device, function

15.04.2019

Model

963

with code J3Z (Axle load measuring device)

with code V2B (Actros model generation 5)

Model

963

with code J3Z (Axle load measuring device)

with code V2F (Actros S/M cab, model generation 5)

Model

964

with code J3Z (Axle load measuring device)

with code V2J (Arocs model generation 5)

Model

964

with code J3Z (Axle load measuring device)

with code V3L (Actros BM964 model generation 5)

Axle load measuring device, function

W32.33-A000-79

Shown on vehicle with code J6B (Multimedia cockpit) or code J6C (Multimedia cockpit, interactive) with single-tire trailing axle

A2

Central gateway control unit (CGW)

A153

Instrument cluster screen (ICS) control unit

B21

Right drive axle pressure sensor

A19a

Finger navigation pad (FNPD)

A154

Head unit screen control unit (HUS)

CAN 1

Exterior-CAN

A26

Level control (CLCS) control unit

B19

Front axle pressure sensor

CAN 3

Frame CAN

A150

Common Telematics Platform (CTP) control unit

B20

Left drive axle pressure sensor

CAN 17

User interface CAN

A151

Instrument cluster (IC) control unit

General

With full air suspension, the axle load measuring system determines the relevant current axle load using pressure sensors in the air suspension bellows on the front and drive axle.

Using the axle load measuring system, the load on each axle and the total vehicle weight can be called up individually.

For this, the vehicle must be at driving level.

For 3­axle vehicles with trailing/leading axle, no measurement is planned for the additional axle. The axle load of the additional axle is calculated based on measurements of the front and drive axle.

Preconditions

Circuit  15 is switched on.

The vehicle is stationary.

The vehicle is at driving level (normal level 1 or normal level 2).

The additional axle is lowered.

The starting-off aid function is switched off.

The traction aid function is switched off (with leading axle).

Operating principle

The current pressure in the air suspension bellows is continuously transmitted to the level control system control unit from the following sensors:

Front axle pressure sensor

Left drive axle pressure sensor

Right drive axle pressure sensor

The level control system control unit calculates the current load of the front axle, drive axle and the total vehicle weight from the pressure sensor signals based on parameterized characteristics.

The level control system control unit transmits the values to the instrument cluster control unit via the central gateway control unit.

The level control menu in the instrument cluster screen control unit can be called up using the finger navigation pad. There, the axle loads can be called up via the "Axles" menu item.

The axle loads are displayed with a certain degree of inaccuracy and can therefore be manually recalibrated. To do so, the axle load must be determined using a scale and entered via the instrument cluster screen control unit using the finger navigation pad.
On vehicles with code J6A (Classic cockpit), input is made via the instrument cluster (ICUC) control unit (A1) using the left multifunction steering wheel button group (S110) and right multifunction steering wheel button group (S111).

Central gateway (CGW) control unit, component description

A2

GF54.21-W-0009H

Multifunction steering wheel, component description

A19a, S110, S111

GF82.90-W-4005F

Level control (CLCS) control unit, component description

A26

GF32.33-W-3126H

Common Telematics Platform (CTP) control unit, component description

Only for vehicles with code J3R (Truck Data Center 7 (FB Card)) or with code J3V (Truck Data Center 7)
A150

GF82.85-W-6002F

Instrument cluster (IC) control unit component description

Only for vehicles with code J6B (Multimedia cockpit) or with code J6C (Multimedia cockpit, interactive)
A151

GF54.21-W-6004F

Instrument cluster (ICS) screen, component description

Only for vehicles with code J6B (Multimedia cockpit) or with code J6C (Multimedia cockpit, interactive)
A153

GF54.30-W-6006F

Head unit screen (HUS), component description

Only for vehicles with code J6B (Multimedia cockpit) or with code J6C (Multimedia cockpit, interactive)
A154

GF54.30-W-6007F

Level control pressure sensor, component description

B19, B20, B21

GF32.33-W-3119F

Referenced documents