BENDIX M-21-M-22 ANTILOCK MOD ASSY Spezifikationen PDF herunterladen (Seite 36)

3 Diagnostics, Troubleshooting and Testing

Meritor WABCO Maintenance Manual MM-0112 (Revised 05-13)

Figure 3.33

Figure 3.34

ESC Module Mounting

The ESC module contains sensors which measure both lateral

acceleration and yaw rate. Thus, it is critical that the module is

securely mounted, leveled and in correct location to the vehicle and

that the module is mounted as expected by the ECU and as per

vehicle OEM specifications.

The module should be installed in a manner where the label is right

side up. The module must be mounted perpendicular to the vehicle

frame rails on a cross member or cross member bracket. The

module connector could be facing the front or rear of the vehicle

depending on the OEM’s specified mounting. It is critical that the

unit be mounted in the exact location and manner as originally

installed by the vehicle manufacturer. Figure 3.35.

Figure 3.35

Location Measurement

Voltage Supply to Ground 8.0-16.0V

(Frame-mounted only) ESC

Ground to Chassis ground

Less than 1 Ohm resistance

Terminating resistance between

ESC CAN-High to ESC CAN-Low

Approximately 90 ohms

With ECU disconnected CAN

lines, Power Supply and Ground

for battery voltage or ground

No continuity

CAN High Voltage 2.5-5.0V

CAN Low Voltage 0.1-2.4V

Figure 3.33

Pin Circuit

1 Power Supply

2 Ground

3CAN-High

4CAN-Low

Figure 3.34

4007213a

ESC MODULE CONNECTOR

4007215a

CAB MOUNT ECU:

LOOKING INTO WIRE

HARNESS CONNECTOR

FRAME MOUNT ECU

WITH ESC:

LOOKING INTO WIRE

HARNESS CONNECTOR

3456

71012 911 8

131618 1517 14

X2-GREEN

ECU

ESC Module

Circuit Connector Pins

Cab-Mounted

Universal with ESC

Power Supply X4-18 pin 7

Ground X4-18 pin 10

ESC CAN-Low X4-18 pin 1

ESC CAN-High X4-18 pin 3

Frame-Mounted

With ESC

Power Supply X2-Green 9

Ground X2-Green External

ESC CAN-Low X2-Green 7

ESC CAN-High X2-Green 8

Figure 3.35

4010609a

± 5°

-5°

+2°

-2°

+2°

-2°

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 97 98

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