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Addendum B – J1939 Type-2 (Green) Cable Adapter
Some heavy-duty vehicles with J1939 Deutsch Type-2 (9-pin – green) connectors may require the use of an adaptor (part number
6601-PC-TYPE2-Y-ADAPTER) to connect the cable to the 66xx device. If needed, this adapter is connected to the Molex end of the
J1939 cable, and plugs directly into the 66xx device.
Important
• Not using an adaptor when one is required will result in limited engine data being reported (e.g. odometer will
typically not be reported).
• Using an adaptor when not required will result in no engine data being reported.
How to determine if the adapter is required
To determine whether or not the adapter may be required, use a voltmeter to calculate the voltage between Pin F on the vehicle
port and Battery Negative (Chassis ground), and Pin G on the vehicle port and Battery Negative.
The adapter is not required if:
• voltage between Pin F - Batt Neg measures approximately 5V
• voltage between Pin G - Batt Neg measures approximately 1V
The adapter is required if:
• voltage between Pin F - Batt Neg measures between 2V~3V
• voltage between Pin G - Batt Neg measures between 2V~3V
Please note
• Vehicles with a J1939 Deutsch Type-1 (9-pin – black) connector do not require the adapter.
• 2017 or later Peterbilt models with a Paccar engine typically require the adapter.
• Some 2019 Peterbilt models with a Paccar engine may not require the adapter regardless of the result of the voltage test
described above.
rev 2020.08.05
Page 9 of 11
installation guide
installation guide
Nero 66xx Beacon Family
www.neroglobal.com
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