BENDIX SD-13-47671 Manuel D’Utilisation

Installations of the TABS‑6 Adv module use the following 

components:

• 

Electronic Control Unit (ECU):  The ECU monitors

the speed sensor signals, lateral accelerometer sensor 

signal and various pressure sensors (and if configured,

external spring deflection sensor) to determine when

ABS  and/or  TRSP  intervention  is  required.    When

needed,  the  ECU  actuates  the  pressure  modulator

valve  to  optimize  the  brake  pressure.    The  ECU

monitors the system to detect and warn the driver of 

any malfunctions. Diagnostic Trouble Codes (DTCs)

are stored in the ECU and can be reviewed to diagnose

the TABS‑6 Adv module system.

• 

Lateral Accelerometer Sensor:  The lateral accel‑

erometer sensor senses the lateral movement of the 

trailer and sends an electrical signal directly propor‑

tional to the trailer’s lateral acceleration to the ECU.

• 

Internal Load Sensor:

 

For air suspension systems, the load sensor port (P42) 

must be plumbed to a fixed axle air ride bellows. Note: 

being used.  The function of this sensor is to monitor 

the pressure and send an electrical signal directly 

proportional to the trailer’s axle load to the ECU.

• 

Brake Demand Pressure Sensor:  This sensor 

monitors the trailer service brake pressure being 

applied by the driver and sends an electrical signal 

directly proportional to the driver’s brake demand to 

the ECU.

• 

Brake Delivery Pressure Sensor:  This sensor (P21) 

monitors the trailer service brake pressure that is being 

delivered to the wheel ends through, or by, the TABS‑6 

Adv module system and sends an electrical signal 

directly proportional to the delivered trailer service 

brake pressure to the ECU.

• 

Modulator Relay Valve (MRV):  An MRV is integrated 

into the module and is controlled electrically by the 

ECU to decrease, hold, or allow the full applied brake

pressure into the brake chamber to control the braking 

torque at the wheels.

• 

Wheel Speed Sensors (WSS): Located at selected

hubs, wheel speed sensors detect the rotation of indi‑

vidual wheels and send an electrical signal to the ECU

proportional to the rotational velocity.  See Figure 3.

• 

External Load Sensor:

  For spring suspension systems, an 

external electrical 

spring deflection sensor is installed — typically as close

to the center (±5 inches) as possible of an axle with 

linkage attached to the center of the axle (but muST 

NoT be installed on a lift axle), See Figure 4.  Vehicles 

with a mechanical load sensor have the port (P42) used 

for sensing the air suspension system plugged.

• 

Trailer ABS Indicator Lamp:  Controlled by the ECU

to show the ABS status, the trailer ABS indicator lamp 

illuminates when a Diagnostic Trouble Code (DTC) is

active.  See Figure 5.  If there are no ABS diagnostic 

trouble codes present, when ignition power is applied 

to the ECU, the lamp will illuminate as a bulb check

lasting typically two (2), up to six (6) seconds at most.