TM-9-2330-335-14-P
SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)
SEPTEMBER 2008
TM-9-2330-335-14-P - Page 595 of 640
0105-3
TM 9-2330-335-14&P
0105
BLINK CODE DIAGNOSTICS
000105
1.
The Meritor WABCO Enhanced Easy-Stop Trailer ABS ECU detects any electrical fault in the trailer ABS. Each
of the faults has a code. When a fault occurs, the ECU stores the code for that fault in the memory.
2.
There are two kinds of faults: active and stored. Active faults are those currently existing in the system, such as a broken
wire. Stored faults are faults that have occurred but do not presently exist. Active faults can be cleared only after repairs
are completed. Stored faults can be diagnosed with Pro-Link 9000.
3.
The ECU signals a malfunction by lighting both the internal and external indicator lamp when a fault exists. The external
ABS indicator lamp is usually mounted on the left rear of the trailer, near the rear wheels.
4.
There are two ways to obtain blink codes:
a.
Ignition Power Activation (recommended method)
b.
Diagnostic Tool
NOTE
In previous versions of Easy-Stop, the blink code tool and the ABS indicator lamp would flash the
blink code at the same time. With Enhanced Easy-Stop, this does not happen. The codes are
displayed one blink at a time, first on the trailer ABS lamp, then on the blink code tool, as
illustrated in Figure 3.
5.
Although the ECU can store multiple faults in its memory, it only displays one blink code at a time. This is why it is
important to recheck the blink codes after repairing a fault. If there are additional codes in the memory, they only blink
after you have repaired the first fault.
6.
Stored faults, clear all, and end of line test modes are available with Pro-Link 9000.
Figure 3.
Blink Code Diagnostics.
0105
447-0156
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