Haltech HT-186363 Quick Start Manual page 4

WIDEBAND AND CAN DEVICES
Wideband Oxygen Sensor
A Wideband Oxygen Sensor is a valuable tool for
tuning your engine, as it measures a wide range of
Air-Fuel Ratio (AFR) values that the engine operates
within.
The Nexus S3 ECU supports onboard wideband
oxygen sensor control, specifically designed for
Bosch LSU 4.9 or NTK wideband sensors, which can
be selected through the NSP software.
The adapter harness is equipped with a Deutsch
DTM-6 connector, allowing direct connection to the
Haltech Wideband Hardware packs shown below
(sold separately).
HT-010746 - Bosch LSU4.9
Wideband Hardware Pack
Wideband
Connector
Example diagram showing how to directly connect and install a Bosch LSU4.9 Wideband Oxygen Sensor.
Wideband Connector (DTM04-6P)
Heater + Cal
1 6
Heater -
Input 2 5
Pump Nernst
3 4
(Wire side view)
In addition to tuning, you can configure the Nexus
ECU to adjust fueling to actively target the desired
AFR (i.e. O2 control), or implement an engine
protection strategy if the sensor detects that the
engine is running too lean.
HT-010747 - NTK LZA08-H5
Wideband Hardware Pack
Wideband
Oxygen
Sensor
For turbo vehicles, install
the sensor post-turbo to
ensure accurate readings.
6
Haltech CAN System
The Nexus S3 ECU adapter harness is fitted with
a DTM-4 CAN connector labelled as "CAN 1",
which can be utilized with a range of Haltech CAN
expansion products.
The diagram below illustrates example connections
to multiple Haltech CAN devices (sold separately)
or to a CAN WB1 / WB2 wideband module which
requires external power.
Haltech uC-10 dash
Example Haltech CAN devices
Haltech CAN 1 Connector (DTM04-4P)
+12V
1 4
Ground
2 3
(Wire side view)
CAN 1
connector
CAN keypad
CAN hub
7
CAN Low
CAN High