BENDIX M-21-M-22 ANTILOCK MOD ASSY Spezifikationen PDF herunterladen (Seite 20)

3 Diagnostics, Troubleshooting and Testing

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

Diagnostics: The process of using blink codes to determine ABS

faults.

Fault: An ABS malfunction detected and stored in memory by the

Meritor WABCO ECU. System faults may be Active or Stored.

Active Fault: A condition that currently exists in the ABS; for

example: A sensor circuit malfunctions on the left front steering

axle. An active fault must be repaired before it can be cleared from

memory — and before you can display additional blink code faults.

Stored Fault: There are two types of stored faults:

A. A repaired active fault that has not been cleared from the

ECU.

B. A fault that occurred but no longer exists. For example, a

loose wire that makes intermittent contact. Because stored

faults are not currently active, they do not have to be repaired

before they can be cleared from memory.

Meritor WABCO recommends you keep a record of these faults for

future reference.

System Configuration Code: One-digit code displayed during the

clear mode. Blink codes for common ABS configurations are shown

in Figure 3.10.

Figure 3.10

Clear Mode

To erase faults from the ECU, you must be in the clear mode. To

enter the clear mode, press and hold the blink code switch for at

least three seconds, then release.

If the system displays eight quick flashes followed by a system

configuration code, the clear was successful. Stored ABS faults

have been cleared from memory.

If you do not receive eight flashes, there are still active faults that

must be repaired before they can be cleared.

NOTE: The clear mode is also used to disable the ATC function.

Figure 3.10

4S/4M

6S/6M - 6x2

6S/4M

1002020c

6S/6M - 6x4

NUMBER OF

FLASHES

ABS

CONFIGURATION

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 97 98

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