Haltech Wideband 02 Controller Quick Start - Manual

Mounting and Connecting the Wideband Controller
Find a suitable location under your vehicle where the Controller body can be mounted.
Using zip ties or other suitable method, fasten the body of the Controller device
securely to the frame-rails or other mounting points as far away from the heat of the
exhaust system as the sensor cable allows. DO NOT zip-tie the HWC by the cables.
Route the cables from the HWC (except sensor cable) into the car interior under the dash.
HWC Cable connections:
Out of the HWC, comes 3 cables:
Interface and power cables with 6 stripped ends:
a. Red 12V supply
b. Blue Heater Ground
c. White System Ground
d. Yellow Analog out 1 (0-1v Output Narrowband)
e. Brown Analog out 2 (0-5v Output Wideband)
f. Green Analog Ground
g. Black Calibration Wire
A. Serial In connection, 2.5mm stereo (female) marked as IN
B. Serial Out connection, 2.5 mm stereo (female) marked as OUT.
Connect the 12V supply wire to a switched 12V source in your car. A switched 12V
source goes on as soon as the ignition on the car is on. Make sure the connection is
fused with a fuse of minimum 5A.
Connect the Heater Ground wire to a chassis ground. Make sure it has a good ground
connection.
Connect the System Ground to where you will use the analog out signals. If you use
the analog out signals as input for an ECU or datalogger, connect the system ground to
the ground of the ECU or datalogger.
Connect Analog out 1 to Haltech O2 sensor wire (optional)
Connect Analog out 2 to Haltech Spare AD wire
Optionally connect a pushbutton switch between ground and the calibration wire.
Optionally connect an indication LED between the calibration wire and ground. The
following diagram shows how to connect the pushbutton and indication LED.
Indicator LED and Calibration button hookup:
Any color LED can be used. A typical LED has 2 wires called Anode and Cathode.
The Cathode side is the shorter of the 2 wires. It is connected to Ground. The Anode
side will be connected to the calibration wire.
Pressing the pushbutton or connecting it quickly to ground starts a free air calibration
process in the HWC. MAKE SURE THE SENSOR IN FRESH AIR FOR AN OPEN AIR
CALIBRATION.
Free air calibration
The sensor MUST be operated in free air for calibration.
If the wide-band sensor is installed in a vehicle, wait 6-8 hours after running the
engine so that all exhaust gas is dissipated from the exhaust tract of the vehicle.
Better yet, disengage the oxygen sensor and expose the sensor to air (away from the
exhaust) for calibration purposes:
1. Connect the HWC to 12V from the vehicle and switch it on.
2. After the sensor has warmed up, either press the push button or connect the
calibration wire to ground for a brief period.
3. After the calibration is complete, switch the HWC off and wait for 30 seconds before
you start the car.
If a LED indicator is connected to the calibration wire, it will be off during free air
calibration.
For More information on calibration, hints, tricks and troubleshooting see the full
wideband O2 sensor instruction manual that is available for download free of charge
from our website www.haltech.com in the downloads section.
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