Power-up Voltage Test
- Power off Spartan 3 Lite and disconnect the wideband sensor.
- Disconnect all devices connected to the High Performance Linear Output (Green wire)
- With a multimeter, measure the voltage of the High Performance Linear Output (Green wire) during Spartan 3 Lite’s initial power on. You should be seeing ~1.66v during the first 5 seconds, 3.33v the next 5 seconds, please confirm this.
If you do not get remotely the same voltages then connect Electronics Ground (Black wire) and Heater Ground (White wire) directly to your battery negative terminal and 12v Power (Red wire) directly to your battery positive terminal and redo this test again.
Free Air Test
- Power off Spartan 3 Lite and disconnect the wideband sensor.
- Remove the wideband sensor from the exhaust
- With Spartan 3 Lite powered off, connect the sensor to the wideband controller and then power on Spartan 3 Lite.
- Wait about 2 minutes, the wideband sensor should get hot (be careful), please confirm the wideband sensor gets hot.
- With the wideband sensor in Free Air, the wideband controller should read max lean, the High Performance Linear Output (Green wire) should be ~5v, please confirm this.
Sensor Test with Lighter Gas
- Power off Spartan 3 Lite and disconnect the wideband sensor.
- Remove the wideband sensor from the exhaust
- With Spartan 3 Lite powered off, connect the sensor to the wideband controller and then power on Spartan 3 Lite.
- Wait about 2 minutes, the sensor should get hot (be careful)
- With a cigarette lighter, give the tip of the sensor some gas, do not light the gas. With enough gas, the wideband controller should read max rich, the High Performance Linear Output (Green wire) should be ~0v, please confirm this