Power-up Voltage Test
Sensor can be connected or disconnected.
- Disconnect all devices connected to the Linear Output (Green Wire)
- With a multimeter, measure the voltage of the green wire during Spartan 2’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 have an AFR gauge like our Solid AFR Gauge connected, ~1.66v should show up as ~13.33[AFR] and 3.33[V] should show ~16.67[AFR].
If you do not get remotely the same voltages then the problem is either a power connection issue or the Spartan 2 is faulty.
Free Air Test
- Remove Sensor from the exhaust
- Connect the sensor to the wideband controller and power on the wideband controller
- Wait about 2 minutes, the sensor should get hot (be careful), please confirm it gets hot
- With the sensor in Free Air, the wideband controller should read max lean (~20AFR, 5v on linear output), please confirm this
Sensor Test with Lighter Gas
- Remove Sensor from exhaust
- Connect the sensor to the wideband controller and power on the wideband controller
- 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 output max rich (~10AFR, 0v on linear output), please confirm this