CAN Wideband Controller (WB1 and WB2) (Bosch LSU 4.9 Lambda Sensors)

CAN Wideband Controller (WB1 and WB2) (Bosch LSU 4.9 Lambda Sensors)

The Haltech CAN Wideband Controller is a plug and play product which increases the functionality of the Haltech ECU by using the Haltech CAN system which is available to all Elite and Platinum Series ECU's. It allows the user to accurately measure air/fuel ratios over a wide range from rich to lean via the Haltech CAN system for precise engine tuning.




Product Overview

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

Installation

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.

Wiring Instructions

Direct Connection

Elite Series Dual Connector ECUs

Connect the Haltech CAN Wideband Controller directly to a Haltech Elite Series ECU using the included DTM-4 Power supply cable and CAN cable DTM-4 to DTM-4 in series. Any CAN Port connected to Haltech CAN Bus can be used.

Connect the DTM-4 Power supply cable RED power wire to a 12 Volt switched “Fused Key On” power source. For ease of installation this is available from the Elite ECU harness at Pin A26 (Red/Blue).

Connect the DTM-4 Power supply cable BLACK ground wire to a good ground location. For ease of installation this is available from the Elite ECU harness on Pin A10 (Black).

NOTE: Either the DTM-4 CAN Connector within the ECU harness or the DTM-4 Connector in the top pocket can be used.

Elite Series Single Connector ECUs

Connect the Haltech CAN Wideband Controller directly to a Haltech Elite Series single connector ECU using the CAN connector within the ECU harness, the included DTM-4 Power Supply Cable and CAN cable DTM-4 to DTM-4 as shown below.

Connect the DTM-4 Power supply cable RED power wire to a 12 Volt switched “Fused Key On” power source. For ease of installation this is available from the Elite ECU harness at Pin A26 (Red/Blue).

Connect the DTM-4 Power supply cable BLACK ground wire to a good ground location. For ease of installation this is available from the Elite ECU harness on Pin A10 (Black).

Elite Series ECUs with Plug 'n' Play Adaptors

Connect the Haltech CAN Wideband Controller directly to a Haltech Elite Series Plug 'n' Play Adaptor using the CAN connector within the ECU harness, the included DTM-4 Power Supply Cable and CAN cable DTM-4 to DTM-4 as shown below.

Connect the DTM-4 Power supply cable RED power wire to a 12 Volt switched “Fused Key On” power source. This should not be sourced from the patch loom, as the current draw could damage the patch box.

Connect the DTM-4 Power supply cable BLACK ground wire to a good ground location.



Platinum Pro Plug-in Series ECUs

Connect the Haltech CAN Wideband Controller directly to a Haltech Platinum Pro Plug-in Series ECU using the included DTM-4 Power supply cable and CAN cable DTM-4 to DTM-4 in series with the DTM-4 to 8 pin Tyco CAN cable provided with the ECU as shown below.

Connect the DTM-4 Power supply cable RED power wire to a 12 Volt switched “Fused Key On” power source. Connect the DTM-4 Power supply cable BLACK ground wire to a good ground location.

For ease of installation power and ground will be available from the vehicle harness please refer to your specific ECU’s Quick Start Guide for reference and locations.

Platinum Sport Series ECUs

Connect the Haltech CAN Wideband Controller directly to a Haltech Platinum Sport Series ECU using the included DTM-4 Power Supply Cable and CAN cable DTM-4 to DTM-4 in series with the DTM-4 to 8 pin Tyco CAN cable as shown below. Please order HT-130040 DTM-4 to 8 pin Tyco CAN Cable to complete your installation.

Connect the DTM-4 Power supply cable RED power wire to a 12 Volt switched “Fused Key On” power source. For ease of installation this is available from the Platinum Sport ECU harness at Pin A26 (Red/Blue).

Connect the DTM-4 Power supply cable BLACK ground wire to a good ground location. For ease of installation this is available from the Platinum Sport ECU harness on Pin A10 (Black).

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.

Sensor Installation

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.

DTM-4 Power Supply Cable

This DTM-4 Power supply cable allows +12V to be sourced from a +12V switched supply within the vehicle wiring harness for powering up the Haltech CAN Wideband.

ECU

CAN DEVICE

Pin Number

Colour

Description

Pin Number

Colour

Description

1

-

-

1

RED

Connect to Switched +12V Supply

2

-

-

2

BLACK

Connect to Battery Ground

3

WHITE

CAN H

3

WHITE

CAN H

4

BLUE

CAN L

4

BLUE

CAN L

Software Setup

With the Haltech CAN Wideband Controller installed, it is now time to set it up in the software. When powered up and connected to ESP, your Haltech ECU will automatically
recognize the new device which will be shown in the Devices tab.

To enable the device, click on the “Options” dropdown and select “Enable Device”. Alternatively, the device may be enabled by accessing the “Devices” page within the Main Setup menu.

The ECU must now be reset. Once the ECU is reset, the device tab should change from “Device Found” to “Online”.

Once the device is online, the sensors may be enabled and allocated as wideband O2 sensor 1 or 2 in the Functions tab.

See diagram above for determining which sensor is O2 sensor 1 and 2.

These Wideband O2 sensors can be used by the ECU for monitoring purposes, or for closed-loop O2 Control once the “O2 Control” function is enabled and configured.

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:

Channel Display

Description

Sensor Cold

This is displayed when the sensor is not yet up to operating temperature, typically on startup.

Condensation Phase

If an O2 sensor is heated before starting a cold engine, the water droplets that pass through the exhaust system upon engine startup will cause condensation to collide with the hot sensor. This Thermal Shock can destroy wideband sensors. The Condensation Phase is when the sensor is operated with reduced heater power to avoid this phenomenon.

Free Air

When the sensor is reading atmospheric air, the status will show Free Air.

Heater Short Circuit

If there is a short circuit on the heater circuit, this will be displayed.

Controller Inactive

When the heater controller is inactive (e.g if not functioning correctly), the channel will display Controller Inactive.

Sensor Short Circuit

If there is a short circuit in the sensor, this will be displayed.

Sensor Open Circuit

If there is an open circuit (for example, if the sensor is disconnected from the controller), this will be shown.

Battery Voltage Low

If the battery voltage is too low for the wideband controller to operate correctly, the channel will display Battery Voltage Low.

Battery Voltage High

If the battery voltage is too high for the wideband controller to operate correctly, the channel will display Battery Voltage High.



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