14POINT7 Spartan 3 Lite Wideband Controller User Manual

14POINT7 Spartan 3 Lite Wideband Controller

Product Information

The Spartan 3 Lite is an exhaust gas sensor that is used to measure the oxygen content in the exhaust system of a vehicle. It comes with an 8ft lambda cable, 2 blade fuse holders, and two 1 Amp blade fuses and two 5 Amp blade fuses. The device has an onboard red LED that indicates the LSU temperature and can be observed through the case slits. It also has serial commands for advanced users to get hardware and firmware versions, set lambda values, and reset factory settings. The device requires a ground switched 12[v] connection and can interface with ECU, Gauge, datalogger, etc. It operates on 5v logic, has a 9600 Baud rate, 8 Data Bits, 1 Stop Bit, No Parity, No Flow Control.

Product Usage Instructions

1. Warning: Before installing and using the Spartan 3 Lite, ensure that the LSU Heater Ground is connected to avoid entering bootloader mode.
2. Package Contents: Unpack the Spartan 3 Lite and ensure that it comes with the following items: 1x Spartan 3 Lite, 8ft lambda cable, 2x blade fuse holder, two 1 Amp blade fuse, two 5 Amp blade fuse.
3. Exhaust Installation: Connect the Spartan 3 Lite terminal as follows:
   • Terminal #1 – Connects to Electronics Power
   • Terminal #2 – Connects to Switched 12[v] for Electronics Ground
   • Terminal #3 – Connects to LSU Heater Power
   • Terminal #4 – Connects to Ground Switched 12[v] for LSU Heater Ground
   • Terminal #5 – Connects to Std Perf Linear Output
   • Terminal #6 – Connects to High Perf Linear Output
   • Terminal #7 – Not Applicable
   • Terminal #8 – Not Applicable
   • Terminal #9 – Connects to UART TX
   • Terminal #10 – Connects to UART RX
   • Ground – Connects to an interfacing device such as ECU, Gauge, datalogger, etc.
4. Sensor Temperature LED: Observe the onboard red LED through the case slits. A slow blink indicates that the sensor is too cool, a solid light means the sensor temperature is okay, and a fast blink means the sensor is too hot.
5. Serial Commands: For advanced users, use serial commands to get hardware and firmware versions, set lambda values, and reset factory settings. All commands are in ASCII.
6. Bootloader: Ensure that the LSU Heater Ground is connected to avoid entering bootloader mode. If the device enters bootloader mode, an onboard LED will shine a solid green.

Warning

• Do not connect or disconnect the Lambda Sensor while Spartan 3 Lite is powered.
•  The Lambda Sensor will get very hot during normal operation, please be careful when handling it.
• Do not install the Lambda Sensor in such a manner that the unit is powered before your engine is running. An engine start can move condensation in your exhaust system to the sensor, if the sensor is already heated this can cause thermal shock and cause the ceramic internals inside the sensor to crack and deform.
• While the Lambda Sensor is in an active exhaust stream, it must be controlled by Spartan 3 Lite. Carbon from an active exhaust can easily build up on an unpowered sensor and foul it.
• Lambda sensor life when used with leaded fuels is between 100-500 hrs.
• Spartan 3 Lite should be located in the driver’s compartment.

Package Contents

• 1x Spartan 3 Lite,
• 8ft lambda cable,
• 2x blade fuse holder,
• two 1 Amp blade fuse,
• two 5 Amp blade fuse.

Exhaust Installation

• The Lambda sensor should be installed between the 10 o’clock and the 2 o’clock position, less than 60 degrees from vertical, this will allow gravity to remove water condensation from the sensor.
• For all Oxygen sensor installations, the sensor must be installed before the catalytic converter.
• For normally aspirated engines the sensor should be installed about 2ft from the engine exhaust port. For
• Turbocharged engines the sensor should be installed after the turbocharger. For Supercharged engines the sensor should be installed 3ft from the engine exhaust port.

Wiring

Sensor Temperature LED

Spartan 3 Lite has an onboard red LED, which can be observed through the case slits, to show LSU Temperature. Slow blink means the sensor is too cool, Solid light means the sensor temperature is ok, fast blink means the sensor is too hot.

Serial Commands (For advanced users only)

Serial Command| Usage Note| Purpose| Example| Factory Default
---|---|---|---|---
GETHW|  | Gets Hardware Version|  |
GETFW|  | Gets Firmware version|  |
SETTYPEx| If x is 0 then Bosch LSU 4.9

If x is 1 then Bosch LSU ADV

|  | SETTYPE1| X=0, LSU 4.9
GETTYPE|  | Gets LSU sensor type|  |
SETLAMFIVEVx.xx| x.xx is a decimal exactly 4 characters long including decimal point. Minimum value is 0.60,

maximum value is 3.40

| Sets Lambda at 5[v] for the linear output| SETLAMFIVEV1.36| x=1.36[Lambda]
GETLAMFIVEV|  | Gets Lambda at 5[v]|  |
SETLAMZEROVx.xx| x.xx is a decimal exactly 4 characters long including decimal point. Minimum value is 0.60,

maximum value is 3.40

| Sets Lambda at 0[v] for the linear output| SETLAMZEROV0.68| x=0.68[Lambda]
GETLAMZEROV|  | Gets Lambda at 0[v]|  |
SETPERFx| If x is 0 then standard performance of 20ms. If x is 1 then high performance of 10ms.

If x is 2 then optimize for lean operation.

|  | SETPERF1| x=0, standard performance
GETPERFx|  | Gets performance|  |
SETSLOWHEATx| If x is 0 then sensor is heated at normal rate during initial power up.

If x is 1 then sensor is heated at 1/3 the normal rate during initial power up.

If x is 3 then wait, a max of 10 min, for exhaust gas to heat sensor to 350C before

heating, requires Firmware 1.05 and above

|  | SETSLOWHEAT1| X=0, normal sensor heatup rate
GETSLOWHEAT|  | Gets slowheat setting|  |
MEMRESET|  | Reset to factory settings.|  |
SETLINOUTx.xxx| Where x.xxx is a decimal exactly 5 characters long including decimal point, greater than 0.000 and less than 5.00. Linear Output will resume normal

operation on reboot.

| Allows the user to set the High Perf Linear Output to a specific voltage| SETLINOUT2.500|
SETCANFORMAT4| Requires Firmware 1.04 and above| Sets Linear Output to %O2: 0v@0%O2 linear to

5v@21%O2

| SETCANFORMAT0| x=0
GETCANFORMAT| Requires Firmware 1.04 and above| Gets CAN format|  |
DOCAL| Requires Firmware 1.04 and above| Do Free Air Calibration and display the value.

Recommended for clone

sensors only.

|  |
GETCAL| Requires Firmware 1.04 and above| Gets Free Air Calibration value|  |
RESETCAL| Requires Firmware 1.04 and above| Resets Free Air Calibration

value to 1.00

|  |

All commands are in ASCII, case does not matter, spaces do not matter.

Bootloader

• When Spartan 3 Lite is powered up without the LSU Heater Ground connected, it will enter bootloader mode. Powering up Spartan 3 Lite with the Heater Ground connected will not trigger the bootloader and Spartan 3 Lite will work as normal. When Spartan 3 Lite is in Bootloader mode there is an onboard LED, which can be observed through the case slits, that will shine a solid green.
• To enter bootloader mode for a firmware upgrade:
  • Make sure Spartan 3 Lite is off, no power to Pin 1 or Pin 3 of the screw terminal
  • Disconnect the sensor
  • Disconnect LSU Heater Ground from Pin 4 of the screw terminal
  • Power on Spartan 3 Lite,
  • Check if the onboard LED is shining a solid green, if it is then your Spartan 3 Lite is in bootloader mode now

Warranty

14Point7 warrants Spartan 3 Lite to be free from defects for 2 years.

Disclaimer

14Point7 is liable for damages only up to the purchase price of its products. 14Point7 products should not be used on public roads.

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