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NEXUS PD16 INSTALLATION
Diagram 1
HALTECH CAN
Installing the software
1. Insert the supplied USB Key into your PC. If
you have lost your USB key, you can download
the Haltech NSP software from the DOWNLOADS
section of the Haltech website.
NOTE: You must have the latest version of NSP
loaded on your computer.
2. If the window does not open automatically, open
My Computer and find the USB drive. Double click
on the USB drive icon.
3. Double click on the installer icon located in the
root directory of the USB drive.
4. Once the Haltech NSP software is installed,
connect your laptop to the ECU via a USB cable,
and your ECU to the PD16 via a Haltech CAN cable
and run the software (see Diagram 1).
5. The latest version of NSP will recognise the
PDM automatically. You will see PD16 listed in the
main menu tree (see Diagram 2).
6. Enable the PD16 in the Haltech CAN System
setup page.
7. You are now ready to configure your PD16
connections in Input/Output menu (see Diagram 3).
Installing the PD16
There are several ways of installing a PD16 into
your system.
The installation method will depend on whether
you are wiring it into an existing system and using
the PD16 to power your ECU, or using the PD16 as
USB
a peripheral power supply with an Elite or Nexus
VCU.
We have provided diagrams for the most common
types of installations. They are meant to be used
as guides only as all installations are different and
specific to the car/engine/existing wiring.
It's always a good idea to consult a qualified auto
electrician before attempting to install any engine
management components, especially If this is your
first installation.
Wiring the PD16
To function correctly, the Haltech Nexus PD16
must be connected to battery positive and battery
negative at all times. It's important to use correct
Diagram 2
gauge cables when connecting the Nexus PD16 to
the battery terminals.
Connect the Nexus PD16 to the positive battery
terminal via the supplied RED SurLok connector
using 4AWG cable.
Connect the Nexus PD16 to the negative battery
terminal via 18AWG wire(s) on Connector A - Pins
Diagram 3
31, 32, 33 and 34.
6
There are two possible modes of operation;
"Master Power Mode" and "Peripheral Power
Mode". The key difference is in the function of the
A25 CAN 12V pin. In the Master mode, the PD16
powers first, triggering the PDM to provide 12V to
Pin A25 to power the CAN bus. In Peripheral mode,
the Nexus VCU provides 12V to Pin A25, thus
powering up the PD16 after.
IGNITION
Master Power Mode
SWITCH
In this mode the PD16 controls the main power
supply to the ECU (common on Elite ECU
applications).
A26
Ensure PD16 has battery power and ground. The
ignition switch can be a simple switch connecting
Pins A13 (Ign. Switch Input) and A26 (Low Current
Constant 12V) together. This will power the PD16
once the switch is closed.
NOTE: Ensure there are no other connections to
Pins A13 and A26.
In this mode, the PD16 will provide 12V to the CAN
bus network via Pin A25 (HCO1)as shown in the
diagram on page 10.
This can be used to power an Elite ECU. If the
installation has a switched positive signal (from an
OE Ignition Switch), it can be connected directly to
A13 (Ign. Switch Input).
Master Power Mode - New install
Power Wiring using Pins A13 and A26.
Pin A26 (Low Current Constant 12V) can be
removed from the harness in this scenario.
A13
A13
IGNITION
A31-34
A31-34
SWITCH
HCO1
+12V
TO
HALTECH
ECU
Master Power Mode - Existing Install
Power wiring with an existing ignition switch
already in place.
7
HCO1
+12V
TO
HALTECH
ECU
FUSE
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