Dimensions

Technical Specifications

Sensor Compatibility: Bosch LSU 4.9
Supply Voltage: 6.5V to 16V
Supply Current: WB1: 650mA Typical / 3A Peak
WB2: 1.3A Typical / 6A Peak
Communications: CAN at 1Mbit/sec
Connectors: 2 x Integrated DTM-4 Connectors
Maximum Ambient Temperature: 125 C
Dimensions: 86mm x 77mm x 28mm

Mounting Location

The Haltech CAN Wideband Controller can be mounted to a flat surface in the engine bay using the two mounting holes provided in the enclosure. The controller should be located as far as possible from any extreme sources of heat (ie the exhaust system or turbocharger).

Although the Haltech CAN Wideband controller is a sealed unit, it is good practice to mount the controller with the connectors orientated in a way that avoids water from being able to be collected in the connectors.

Connection to Sensors

Connect the Bosch 4.9 LSU sensors via the available pre terminated cables from the controller.

CAN Connection

Connect the controller via the DTM-4 to DTM-4 CAN Cable provided, this cable can be connected to either connector on the device and routed through a grommet on the firewall to the ECU or CAN Hub.

Note: Haltech Elite Wideband Controllers draw up to 3A per sensor upon startup with cold sensors. Please ensure wiring guidelines are followed as damage to your ECU may result.

Please see wiring installation information below.

Direct Connection

Connecting Multiple Devices

The Haltech CAN Wideband Controller WB1 and WB2 can be used in a “daisy chain” to connect multiple widebands or other compatible Haltech CAN Devices such as a TCA, I/O Expander, GaugeArt CAN Gauge or Dash, as shown below.

WARNING: When multiple wideband controllers are connected on the CAN Bus the 12V Switched Power Supply must be supplied by a relay due to current required. Please refer to wiring diagram below.

Location

The best location for the sensor is approximately 1 metre from the closest exhaust valve (measured along the central axis of the exhaust pipe) or 1 metre from the turbo outlet (for turbo charged vehicles)

Mounting

The sensor requires the included mild steel bung to be welded into the vehicles exhaust system. Weld the bung into the chosen position, install the sensor. It is recommended that the sensor be orientated in such a way that minimises any condensation entering the sensor during warm up and operation.

Wiring

Connect the wideband sensor to the pre-terminated 6 position connector on the wideband controller.
Ensure all wiring is away from extreme heat sources and secure in place.

On a WB2 Controller the sensors are allocated as shown below.

Enabling Multiple Widebands

If two or more Haltech WB2 devices are connected to an ECU, each device must be allocated a unique device ID to function correctly. Haltech CAN wideband controllers are shipped from factory as device ID "A".

Up to 4 individual Haltech WB2 devices may be supported, depending our your ECU.

Updating of the device ID can be done through the Devices tab in ESP.

• Connect the Wideband to be updated and enable the device as previously noted.

• Select the “Options” tab and a menu will appear.

• Select "Change device ID to B”.

• Connect the next device and repeat the process until each device is allocated a unique ID.

Once each device has a unique ID, the ECU must be reset. The sensors may now be enabled and allocated as wideband O2 sensor 1, 2, 3, 4 etc in the Functions tab.

NOTE: Devices which share the same ID will show an error if both devices are connected at the same time. One of the devices in error will need to be removed before re-programming can occur.

Wideband Sensor Status Information

The Wideband O2 channels in ESP will display the Lambda values from the wideband sensors. Under certain conditions, these channels will also display if there is a fault. See below for the Wideband O2 channel state descriptions: