I recommend just removing it from the car. It is BEST if you remove the 02 sensor completely fromm the exhaust, but it can be calibrated in the exhaust if the car has not ran in 6 HOURS.

The LC1 MUST be calibrated with the O2 sensor in FREE AIR to be accurrate.

NOTE: If the Sensor is replaced with a new sensor follow the first time use instructions above. To insure accuracy the Sensor should be recalibrated regularly. IF the LED blinks a fixed number of pulses then turns off for 2 seconds and then repeats, there is an error see the appendix of the LC1 instructions for diagnostic. The LED stays on once calibration is done. The LED will turn off breifly as the 02 sensor is calibrated. The LED will blink steadily while the 02 sensor warms up.

Turn the ignition on and wait for 2 minutes.

The LC1 MUST be calibrated with the O2 sensor in FREE AIR to be accurrate.

Connect the 02 sensor to the LC1 Wiring.

Turn on the ignition (but don't start car) and wait for 10 seconds, Note the LC1 must be connected to ignition power.

Do NOT connect the O2 Sensor to the Wiring YET!, Do NOT mount the 02 sensor in the Exhaust YET!.

The cathode side is normally the shorter wire. You can also use any other 1.2V to 2.2V (1mA to 30mA) LED you want.

The LED light shows you the status of the LC1, it is not required tomake the unit work but I would recommend installing it so you can at least see it when claibrating the LC1.Ĭonnect the RED Wire on the LED (Anode Side) to the Calibbration wire on the LC1 Harness.Ĭonnect the BLACK WIRE on the LEAD (Cathode Side)to a good ground on the chassis.

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