Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 56
5.4 Diagnostic Connector
A 9 pin diagnostic connector is fitted to the engine wiring harness on all
industrial engines. The diagnostic connector enables connection to both the
proprietary PDL data links via the EST service tool and the J1939 data link,
which can be accessed by most third party diagnostic tools.
If the connector is inaccessible when the engine is in the application or no
connector is fitted to the engine wire harness, provisions should be made to
allocate an alternative location for diagnostic connection. In this case it is
recommended that a diagnostic connector be wired in a location that can
easily be accessed, free from possible water / dirt ingress and impact
damage. A preferred location would be the machine cab on the basis of
protection, convenience and safety. The engine wire harness must not be
changed or modified. To wire a diagnostic connection use the data link pins
available on the OEM J1 connector.
The Diagnostic connector is intended solely for engine diagnostic purposes
and must not be used as means of connecting machine controllers or displays
to the J1939 datalink. Dedicated I/O has been provided for this function via
the ECM J1 connector.
5.4.1 Diagnostic Connector Layout
The engine diagnostic connector is a 9 pin Deutsch connector, which must be
fitted to either the engine harness or as part of the machine harness. For
those applications wishing to mount a diagnostic connector as part of the
machine harness (mounted under the dashboard etc) the receptacle with a
flange is recommended for secure mounting. The part numbers for both
connectors (with and without flange) are shown below in table 5.5.
Figure 5.9 Diagnostic Connector Front View
Description
Perkins
Part Number
Supplier Part Number
Receptacle (with flange) 2900A026 HD10-9-96P
Receptacle N/A HD14-9-96P
Receptacle End Cap 2900A018 HDC-16-9
Table 5.5 Diagnostic Connector Part Numbers
5.4.2 Diagnostic Connector Wire Gauge Size
All cables supplying the diagnostic connector are required to be no smaller
than 18 AWG and should conform to the GXL insulation specification. Larger