Drawbar Trailers (Full Trailers) - BPW ECO Tronic EBS Operating And Installation Instructions

4S/3M
Fig. 23
• Sensed axles cannot be lifted.
• Any axle without directly controlled wheels (unsensed) may
be a lift axle.
• Master ECU is mounted to EPRV's 21/22. All Sensors must
be connected to this Master ECU.
• Slave ECU is mounted to EPRV 2 and is controlled by Master
ECU. Slave ECU/EPRV 2 is shown facing rear but can also
be installed facing forward, left or right, as EPRV 2 is always
select low control.

2.2 Drawbar trailers (full trailers)

S1B S2B
21
2
22
S1A S2A
S1B S2B
22
2
21
S1A S2A
S1B S2B
21
2
22
S1A S2A
S1B S2B
21
2
22
S1A S2A
S1B S2B
22
2
21
S1A S2A
S1B S2B
22
2
21
S1A S2A
Key
22
Modulators
21
ECU power connectors
Slave ECU
2
Modulator
21