Fault Code Guide

External strapping is the interconnection of speciﬁc

pins on the module in order to select a desired fea-

ture. In the external strapping of the Expansion Mod-

ule, the J1939 source address and the J1587 mes-

sage ID are used to identify the module on the

vehicle datalinks. Pins on the C4 connector of the

Expansion Module are connected as speciﬁed in

Table 2. See the "Pinouts at Connector C4" table in

Speciﬁcations 400 to match the address ID to the

actual pin locations.

Module Conﬁguration and External Strapping IDs

System

Deﬁnition

Address ID Connections on Connector C4

J1939 Source

Address

J1587 MID

ABCD

EXM X — — X 235 170

CHM No Connections 71 249

Connections are shown as address IDs, not as pin numbers.

Table 2, Module Conﬁguration and External Strapping IDs

Chassis Module and Expansion Module

54.13

General Information

Business Class M2 Workshop Manual, Supplement 10, September 2006 050/3